[2259] | 1 | !> @synthetic_turbulence_generator_mod.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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[2696] | 3 | ! This file is part of the PALM model system. |
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[2259] | 4 | ! |
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[2696] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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[2259] | 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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| 9 | ! |
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[2696] | 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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[2259] | 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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| 17 | ! Copyright 2017 Leibniz Universitaet Hannover |
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| 18 | !------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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| 22 | ! |
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[3349] | 23 | ! |
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[2259] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: synthetic_turbulence_generator_mod.f90 3349 2018-10-15 16:39:41Z suehring $ |
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[3349] | 27 | ! Fix for format descriptor |
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| 28 | ! |
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| 29 | ! 3348 2018-10-15 14:30:51Z suehring |
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[3347] | 30 | ! - Revise structure of init routine |
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| 31 | ! - introduce new parameters to skip STG for some timesteps |
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| 32 | ! - introduce time-dependent parametrization of Reynolds-stress tensor |
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| 33 | ! - Bugfix in allocation of mean_inflow_profiles |
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| 34 | ! |
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| 35 | ! 3341 2018-10-15 10:31:27Z suehring |
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[3289] | 36 | ! Introduce module parameter for number of inflow profiles |
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| 37 | ! |
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| 38 | ! 3288 2018-09-28 10:23:08Z suehring |
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[3274] | 39 | ! Modularization of all bulk cloud physics code components |
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| 40 | ! |
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| 41 | ! 3248 2018-09-14 09:42:06Z sward |
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[3248] | 42 | ! Minor formating changes |
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| 43 | ! |
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| 44 | ! 3246 2018-09-13 15:14:50Z sward |
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[3246] | 45 | ! Added error handling for input namelist via parin_fail_message |
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| 46 | ! |
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| 47 | ! 3241 2018-09-12 15:02:00Z raasch |
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[3241] | 48 | ! unused variables removed |
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| 49 | ! |
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| 50 | ! 3186 2018-07-30 17:07:14Z suehring |
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[3186] | 51 | ! Mask topography while imposing inflow perturbations at the boundaries; do not |
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| 52 | ! impose perturbations at top boundary as well as ghost points |
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| 53 | ! |
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| 54 | ! 3183 2018-07-27 14:25:55Z suehring |
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[3183] | 55 | ! Rename variables and extend error message |
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| 56 | ! Enable geneartor also for stretched grids |
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| 57 | ! |
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| 58 | ! 3182 2018-07-27 13:36:03Z suehring |
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[3065] | 59 | ! Error message related to vertical stretching has been added, dz was replaced |
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| 60 | ! by dz(1) |
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| 61 | ! |
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| 62 | ! 3051 2018-05-30 17:43:55Z suehring |
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[3051] | 63 | ! Bugfix in calculation of initial Reynolds-stress tensor. |
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[3049] | 64 | ! |
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| 65 | ! 3045 2018-05-28 07:55:41Z Giersch |
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[3051] | 66 | ! Error messages revised |
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[3045] | 67 | ! |
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| 68 | ! 3044 2018-05-25 10:59:41Z gronemeier |
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[3044] | 69 | ! Add missing variable descriptions |
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| 70 | ! |
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| 71 | ! 3038 2018-05-24 10:54:00Z gronemeier |
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[3038] | 72 | ! updated variable descriptions |
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| 73 | ! |
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| 74 | ! 2967 2018-04-13 11:22:08Z raasch |
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[2967] | 75 | ! bugfix: missing parallel cpp-directives added |
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[3038] | 76 | ! |
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[2967] | 77 | ! 2946 2018-04-04 17:01:23Z suehring |
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[2946] | 78 | ! Remove unused module load |
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[3038] | 79 | ! |
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[2946] | 80 | ! 2945 2018-04-04 16:27:14Z suehring |
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[3038] | 81 | ! - Bugfix in parallelization of synthetic turbulence generator in case the |
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| 82 | ! z-dimension is not an integral divisor of the number of processors along |
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[2945] | 83 | ! the x- and y-dimension |
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[3038] | 84 | ! - Revision in control mimic in case of RAN-LES nesting |
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| 85 | ! |
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[2945] | 86 | ! 2938 2018-03-27 15:52:42Z suehring |
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[3038] | 87 | ! Apply turbulence generator at all non-cyclic lateral boundaries in case of |
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| 88 | ! realistic Inifor large-scale forcing or RANS-LES nesting |
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| 89 | ! |
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[2938] | 90 | ! 2936 2018-03-27 14:49:27Z suehring |
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[3038] | 91 | ! variable named found has been introduced for checking if restart data was found, |
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| 92 | ! reading of restart strings has been moved completely to read_restart_data_mod, |
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| 93 | ! redundant skipping function has been removed, stg_read/write_restart_data |
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| 94 | ! have been renamed to stg_r/wrd_global, stg_rrd_global is called in |
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[2894] | 95 | ! read_restart_data_mod now, flag syn_turb_gen_prerun and marker *** end stg |
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[3038] | 96 | ! *** have been removed (Giersch), strings and their respective lengths are |
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| 97 | ! written out and read now in case of restart runs to get rid of prescribed |
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| 98 | ! character lengths (Giersch), CASE DEFAULT was added if restart data is read |
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| 99 | ! |
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[2894] | 100 | ! 2841 2018-02-27 15:02:57Z suehring |
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[2841] | 101 | ! Bugfix: wrong placement of include 'mpif.h' corrected |
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[3038] | 102 | ! |
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[2841] | 103 | ! 2836 2018-02-26 13:40:05Z Giersch |
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[3038] | 104 | ! The variables synthetic_turbulence_generator and |
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[2836] | 105 | ! use_synthetic_turbulence_generator have been abbreviated + syn_turb_gen_prerun |
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| 106 | ! flag is used to define if module related parameters were outputted as restart |
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[3038] | 107 | ! data |
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| 108 | ! |
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[2776] | 109 | ! 2716 2017-12-29 16:35:59Z kanani |
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[2716] | 110 | ! Corrected "Former revisions" section |
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[3038] | 111 | ! |
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[2716] | 112 | ! 2696 2017-12-14 17:12:51Z kanani |
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| 113 | ! Change in file header (GPL part) |
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| 114 | ! |
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| 115 | ! 2669 2017-12-06 16:03:27Z raasch |
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[2669] | 116 | ! unit number for file containing turbulence generator data changed to 90 |
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| 117 | ! bugfix: preprocessor directives added for MPI specific code |
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[3038] | 118 | ! |
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[2669] | 119 | ! 2576 2017-10-24 13:49:46Z Giersch |
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[3038] | 120 | ! Definition of a new function called stg_skip_global to skip module |
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[2576] | 121 | ! parameters during reading restart data |
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[3038] | 122 | ! |
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[2576] | 123 | ! 2563 2017-10-19 15:36:10Z Giersch |
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[2563] | 124 | ! stg_read_restart_data is called in stg_parin in the case of a restart run |
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[3038] | 125 | ! |
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[2563] | 126 | ! 2259 2017-06-08 09:09:11Z gronemeier |
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[2259] | 127 | ! Initial revision |
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| 128 | ! |
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| 129 | ! |
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[3038] | 130 | ! |
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[2259] | 131 | ! Authors: |
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| 132 | ! -------- |
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[3347] | 133 | ! @author Tobias Gronemeier, Matthias Suehring, Atsushi Inagaki, Micha Gryschka, Christoph Knigge |
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| 134 | ! |
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[2259] | 135 | ! |
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| 136 | ! |
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| 137 | ! Description: |
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| 138 | ! ------------ |
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| 139 | !> The module generates turbulence at the inflow boundary based on a method by |
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| 140 | !> Xie and Castro (2008) utilizing a Lund rotation (Lund, 1998) and a mass-flux |
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| 141 | !> correction by Kim et al. (2013). |
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| 142 | !> The turbulence is correlated based on length scales in y- and z-direction and |
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| 143 | !> a time scale for each velocity component. The profiles of length and time |
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| 144 | !> scales, mean u, v, w, e and pt, and all components of the Reynolds stress |
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[3347] | 145 | !> tensor can be either read from file STG_PROFILES, or will be parametrized |
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| 146 | !> within the boundary layer. |
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[2259] | 147 | !> |
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| 148 | !> @todo test restart |
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| 149 | !> enable cyclic_fill |
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| 150 | !> implement turbulence generation for e and pt |
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[2945] | 151 | !> @todo Input of height-constant length scales via namelist |
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[2259] | 152 | !> @note <Enter notes on the module> |
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| 153 | !> @bug Height information from input file is not used. Profiles from input |
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| 154 | !> must match with current PALM grid. |
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| 155 | !> In case of restart, velocity seeds differ from precursor run if a11, |
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| 156 | !> a22, or a33 are zero. |
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| 157 | !------------------------------------------------------------------------------! |
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| 158 | MODULE synthetic_turbulence_generator_mod |
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| 159 | |
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| 160 | |
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| 161 | USE arrays_3d, & |
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[3347] | 162 | ONLY: mean_inflow_profiles, q, pt, u, v, w, zu, zw |
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[2259] | 163 | |
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[3274] | 164 | USE basic_constants_and_equations_mod, & |
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[3347] | 165 | ONLY: g, kappa, pi |
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[2259] | 166 | |
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| 167 | USE control_parameters, & |
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[3288] | 168 | ONLY: initializing_actions, num_mean_inflow_profiles, message_string, & |
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| 169 | syn_turb_gen |
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[2259] | 170 | |
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| 171 | USE cpulog, & |
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[3347] | 172 | ONLY: cpu_log, log_point |
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[2259] | 173 | |
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| 174 | USE indices, & |
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[2938] | 175 | ONLY: nbgp, nzb, nzt, nxl, nxlg, nxr, nxrg, nys, nyn, nyng, nysg |
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[2259] | 176 | |
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| 177 | USE kinds |
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| 178 | |
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[2967] | 179 | #if defined( __parallel ) && !defined( __mpifh ) |
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[2259] | 180 | USE MPI |
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[2841] | 181 | #endif |
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[2259] | 182 | |
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[3347] | 183 | USE nesting_offl_mod, & |
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| 184 | ONLY: zi_ribulk |
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| 185 | |
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[2259] | 186 | USE pegrid, & |
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[2938] | 187 | ONLY: comm1dx, comm1dy, comm2d, ierr, myidx, myidy, pdims |
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[2259] | 188 | |
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| 189 | USE transpose_indices, & |
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| 190 | ONLY: nzb_x, nzt_x |
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| 191 | |
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| 192 | |
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| 193 | IMPLICIT NONE |
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| 194 | |
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[2967] | 195 | #if defined( __parallel ) && defined( __mpifh ) |
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[2841] | 196 | INCLUDE "mpif.h" |
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| 197 | #endif |
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| 198 | |
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[3182] | 199 | |
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[3347] | 200 | LOGICAL :: velocity_seed_initialized = .FALSE. !< true after first call of stg_main |
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| 201 | LOGICAL :: parametrize_inflow_turbulence = .FALSE. !< flag indicating that inflow turbulence is either read from file (.FALSE.) or if it parametrized |
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| 202 | LOGICAL :: use_syn_turb_gen = .FALSE. !< switch to use synthetic turbulence generator |
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[2259] | 203 | |
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[3038] | 204 | INTEGER(iwp) :: id_stg_left !< left lateral boundary core id in case of turbulence generator |
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| 205 | INTEGER(iwp) :: id_stg_north !< north lateral boundary core id in case of turbulence generator |
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| 206 | INTEGER(iwp) :: id_stg_right !< right lateral boundary core id in case of turbulence generator |
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| 207 | INTEGER(iwp) :: id_stg_south !< south lateral boundary core id in case of turbulence generator |
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[2938] | 208 | INTEGER(iwp) :: stg_type_xz !< MPI type for full z range |
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| 209 | INTEGER(iwp) :: stg_type_xz_small !< MPI type for small z range |
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| 210 | INTEGER(iwp) :: stg_type_yz !< MPI type for full z range |
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| 211 | INTEGER(iwp) :: stg_type_yz_small !< MPI type for small z range |
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| 212 | INTEGER(iwp) :: merg !< maximum length scale (in gp) |
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| 213 | INTEGER(iwp) :: mergp !< merg + nbgp |
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[3038] | 214 | INTEGER(iwp) :: nzb_x_stg !< lower bound of z coordinate (required for transposing z on PEs along x) |
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| 215 | INTEGER(iwp) :: nzt_x_stg !< upper bound of z coordinate (required for transposing z on PEs along x) |
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| 216 | INTEGER(iwp) :: nzb_y_stg !< lower bound of z coordinate (required for transposing z on PEs along y) |
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| 217 | INTEGER(iwp) :: nzt_y_stg !< upper bound of z coordinate (required for transposing z on PEs along y) |
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[2259] | 218 | |
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[3347] | 219 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: displs_xz !< displacement for MPI_GATHERV |
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| 220 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: recv_count_xz !< receive count for MPI_GATHERV |
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| 221 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: displs_yz !< displacement for MPI_GATHERV |
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| 222 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: recv_count_yz !< receive count for MPI_GATHERV |
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| 223 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nux !< length scale of u in x direction (in gp) |
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| 224 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nuy !< length scale of u in y direction (in gp) |
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| 225 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nuz !< length scale of u in z direction (in gp) |
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| 226 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nvx !< length scale of v in x direction (in gp) |
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| 227 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nvy !< length scale of v in y direction (in gp) |
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| 228 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nvz !< length scale of v in z direction (in gp) |
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| 229 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nwx !< length scale of w in x direction (in gp) |
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| 230 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nwy !< length scale of w in y direction (in gp) |
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| 231 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nwz !< length scale of w in z direction (in gp) |
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| 232 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: seed !< seed of random number for rn-generator |
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[2259] | 233 | |
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[3347] | 234 | REAL(wp) :: cosmo_ref = 10.0_wp !< height of first vertical grid level in mesoscale model, used for calculation of scaling parameters |
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| 235 | REAL(wp) :: dt_stg_adjust = 300.0_wp !< time interval for adjusting turbulence statistics |
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| 236 | REAL(wp) :: dt_stg_call = 5.0_wp !< time interval for calling synthetic turbulence generator |
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| 237 | REAL(wp) :: mc_factor !< mass flux correction factor |
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| 238 | REAL(wp) :: scale_l !< scaling parameter used for turbulence parametrization - Obukhov length |
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| 239 | REAL(wp) :: scale_us !< scaling parameter used for turbulence parametrization - friction velocity |
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| 240 | REAL(wp) :: scale_wm !< scaling parameter used for turbulence parametrization - momentum scale |
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| 241 | REAL(wp) :: time_stg_adjust = 0.0_wp !< time counter for adjusting turbulence information |
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| 242 | REAL(wp) :: time_stg_call = 0.0_wp !< time counter for calling generator |
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| 243 | |
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| 244 | |
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| 245 | REAL(wp),DIMENSION(:), ALLOCATABLE :: r11 !< Reynolds parameter |
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| 246 | REAL(wp),DIMENSION(:), ALLOCATABLE :: r21 !< Reynolds parameter |
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| 247 | REAL(wp),DIMENSION(:), ALLOCATABLE :: r22 !< Reynolds parameter |
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| 248 | REAL(wp),DIMENSION(:), ALLOCATABLE :: r31 !< Reynolds parameter |
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| 249 | REAL(wp),DIMENSION(:), ALLOCATABLE :: r32 !< Reynolds parameter |
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| 250 | REAL(wp),DIMENSION(:), ALLOCATABLE :: r33 !< Reynolds parameter |
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| 251 | |
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| 252 | REAL(wp), DIMENSION(:), ALLOCATABLE :: a11 !< coefficient for Lund rotation |
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| 253 | REAL(wp), DIMENSION(:), ALLOCATABLE :: a21 !< coefficient for Lund rotation |
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| 254 | REAL(wp), DIMENSION(:), ALLOCATABLE :: a22 !< coefficient for Lund rotation |
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| 255 | REAL(wp), DIMENSION(:), ALLOCATABLE :: a31 !< coefficient for Lund rotation |
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| 256 | REAL(wp), DIMENSION(:), ALLOCATABLE :: a32 !< coefficient for Lund rotation |
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| 257 | REAL(wp), DIMENSION(:), ALLOCATABLE :: a33 !< coefficient for Lund rotation |
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| 258 | REAL(wp), DIMENSION(:), ALLOCATABLE :: tu !< Lagrangian time scale of u |
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| 259 | REAL(wp), DIMENSION(:), ALLOCATABLE :: tv !< Lagrangian time scale of v |
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| 260 | REAL(wp), DIMENSION(:), ALLOCATABLE :: tw !< Lagrangian time scale of w |
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[2259] | 261 | |
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[3347] | 262 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bux !< filter function for u in x direction |
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| 263 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: buy !< filter function for u in y direction |
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| 264 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: buz !< filter function for u in z direction |
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| 265 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bvx !< filter function for v in x direction |
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| 266 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bvy !< filter function for v in y direction |
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| 267 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bvz !< filter function for v in z direction |
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| 268 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bwx !< filter function for w in y direction |
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| 269 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bwy !< filter function for w in y direction |
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| 270 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: bwz !< filter function for w in z direction |
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| 271 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fu_xz !< velocity seed for u at xz plane |
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| 272 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fuo_xz !< velocity seed for u at xz plane with new random number |
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| 273 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fu_yz !< velocity seed for u at yz plane |
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| 274 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fuo_yz !< velocity seed for u at yz plane with new random number |
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| 275 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fv_xz !< velocity seed for v at xz plane |
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| 276 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fvo_xz !< velocity seed for v at xz plane with new random number |
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| 277 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fv_yz !< velocity seed for v at yz plane |
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| 278 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fvo_yz !< velocity seed for v at yz plane with new random number |
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| 279 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fw_xz !< velocity seed for w at xz plane |
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| 280 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fwo_xz !< velocity seed for w at xz plane with new random number |
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| 281 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fw_yz !< velocity seed for w at yz plane |
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| 282 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: fwo_yz !< velocity seed for w at yz plane with new random number |
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| 283 | |
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| 284 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: dist_xz !< imposed disturbances at north/south boundary |
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| 285 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: dist_yz !< imposed disturbances at north/south boundary |
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[2259] | 286 | |
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| 287 | ! |
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| 288 | !-- PALM interfaces: |
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[3347] | 289 | !-- Adjust time and lenght scales, Reynolds stress, and filter functions |
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| 290 | INTERFACE stg_adjust |
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| 291 | MODULE PROCEDURE stg_adjust |
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| 292 | END INTERFACE stg_adjust |
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| 293 | ! |
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[2259] | 294 | !-- Input parameter checks to be done in check_parameters |
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| 295 | INTERFACE stg_check_parameters |
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| 296 | MODULE PROCEDURE stg_check_parameters |
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| 297 | END INTERFACE stg_check_parameters |
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| 298 | |
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| 299 | ! |
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| 300 | !-- Calculate filter functions |
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| 301 | INTERFACE stg_filter_func |
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| 302 | MODULE PROCEDURE stg_filter_func |
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| 303 | END INTERFACE stg_filter_func |
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| 304 | |
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| 305 | ! |
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[2938] | 306 | !-- Generate velocity seeds at south and north domain boundary |
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| 307 | INTERFACE stg_generate_seed_xz |
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| 308 | MODULE PROCEDURE stg_generate_seed_xz |
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| 309 | END INTERFACE stg_generate_seed_xz |
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| 310 | ! |
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| 311 | !-- Generate velocity seeds at left and/or right domain boundary |
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[2259] | 312 | INTERFACE stg_generate_seed_yz |
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| 313 | MODULE PROCEDURE stg_generate_seed_yz |
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| 314 | END INTERFACE stg_generate_seed_yz |
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| 315 | |
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| 316 | ! |
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| 317 | !-- Output of information to the header file |
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| 318 | INTERFACE stg_header |
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| 319 | MODULE PROCEDURE stg_header |
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| 320 | END INTERFACE stg_header |
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| 321 | |
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| 322 | ! |
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| 323 | !-- Initialization actions |
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| 324 | INTERFACE stg_init |
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| 325 | MODULE PROCEDURE stg_init |
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| 326 | END INTERFACE stg_init |
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| 327 | |
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| 328 | ! |
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| 329 | !-- Main procedure of synth. turb. gen. |
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| 330 | INTERFACE stg_main |
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| 331 | MODULE PROCEDURE stg_main |
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| 332 | END INTERFACE stg_main |
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| 333 | |
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| 334 | ! |
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| 335 | !-- Reading of NAMELIST parameters |
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| 336 | INTERFACE stg_parin |
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| 337 | MODULE PROCEDURE stg_parin |
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| 338 | END INTERFACE stg_parin |
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| 339 | |
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| 340 | ! |
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| 341 | !-- Reading of parameters for restart runs |
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[2894] | 342 | INTERFACE stg_rrd_global |
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| 343 | MODULE PROCEDURE stg_rrd_global |
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| 344 | END INTERFACE stg_rrd_global |
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[2259] | 345 | |
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| 346 | ! |
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| 347 | !-- Writing of binary output for restart runs |
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[2894] | 348 | INTERFACE stg_wrd_global |
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| 349 | MODULE PROCEDURE stg_wrd_global |
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| 350 | END INTERFACE stg_wrd_global |
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[2259] | 351 | |
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| 352 | SAVE |
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| 353 | |
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| 354 | PRIVATE |
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| 355 | |
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| 356 | ! |
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| 357 | !-- Public interfaces |
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[3347] | 358 | PUBLIC stg_adjust, stg_check_parameters, stg_header, stg_init, stg_main, & |
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| 359 | stg_parin, stg_rrd_global, stg_wrd_global |
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[2259] | 360 | |
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| 361 | ! |
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| 362 | !-- Public variables |
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[3347] | 363 | PUBLIC dt_stg_call, dt_stg_adjust, id_stg_left, id_stg_north, & |
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| 364 | id_stg_right, id_stg_south, parametrize_inflow_turbulence, & |
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| 365 | time_stg_adjust, time_stg_call, use_syn_turb_gen |
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[2259] | 366 | |
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| 367 | |
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| 368 | CONTAINS |
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| 369 | |
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| 370 | |
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| 371 | !------------------------------------------------------------------------------! |
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| 372 | ! Description: |
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| 373 | ! ------------ |
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| 374 | !> Check parameters routine for synthetic turbulence generator |
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| 375 | !------------------------------------------------------------------------------! |
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| 376 | SUBROUTINE stg_check_parameters |
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| 377 | |
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| 378 | |
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| 379 | USE control_parameters, & |
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[3241] | 380 | ONLY: bc_lr, bc_ns, child_domain, nesting_offline, rans_mode, & |
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| 381 | turbulent_inflow |
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[2259] | 382 | |
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[2938] | 383 | USE pmc_interface, & |
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| 384 | ONLY : rans_mode_parent |
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[2259] | 385 | |
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[2938] | 386 | |
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[2259] | 387 | IMPLICIT NONE |
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| 388 | |
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[3182] | 389 | IF ( .NOT. use_syn_turb_gen .AND. .NOT. rans_mode .AND. & |
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| 390 | nesting_offline ) THEN |
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| 391 | message_string = 'No synthetic turbulence generator is applied. ' // & |
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| 392 | 'In case PALM operates in LES mode and lateral ' // & |
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| 393 | 'boundary conditions are provided by COSMO model, ' // & |
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| 394 | 'turbulence may require large adjustment lenght at ' //& |
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| 395 | 'the lateral inflow boundaries. Please check your ' // & |
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| 396 | 'results carefully.' |
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| 397 | CALL message( 'stg_check_parameters', 'PA0000', 0, 0, 0, 6, 0 ) |
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[2938] | 398 | ENDIF |
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| 399 | |
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[3182] | 400 | IF ( .NOT. use_syn_turb_gen .AND. child_domain & |
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[2938] | 401 | .AND. rans_mode_parent .AND. .NOT. rans_mode ) THEN |
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| 402 | message_string = 'Synthetic turbulence generator has to be applied ' // & |
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| 403 | 'when nesting is applied and parent operates in ' // & |
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| 404 | 'RANS-mode but current child in LES mode.' |
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| 405 | CALL message( 'stg_check_parameters', 'PA0000', 1, 2, 0, 6, 0 ) |
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| 406 | ENDIF |
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| 407 | |
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[2776] | 408 | IF ( use_syn_turb_gen ) THEN |
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[2259] | 409 | |
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[3182] | 410 | IF ( .NOT. nesting_offline .AND. .NOT. child_domain ) THEN |
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| 411 | |
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[2938] | 412 | IF ( INDEX( initializing_actions, 'set_constant_profiles' ) == 0 & |
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| 413 | .AND. INDEX( initializing_actions, 'read_restart_data' ) == 0 ) THEN |
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| 414 | message_string = 'Using synthetic turbulence generator ' // & |
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[3046] | 415 | 'requires %initializing_actions = ' // & |
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[3347] | 416 | '"set_constant_profiles" or "read_restart_data"' //& |
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| 417 | ', if not offline nesting is applied.' |
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[2938] | 418 | CALL message( 'stg_check_parameters', 'PA0015', 1, 2, 0, 6, 0 ) |
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| 419 | ENDIF |
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| 420 | |
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| 421 | IF ( bc_lr /= 'dirichlet/radiation' ) THEN |
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| 422 | message_string = 'Using synthetic turbulence generator ' // & |
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[3347] | 423 | 'requires &bc_lr = "dirichlet/radiation", ' // & |
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| 424 | 'if not offline nesting is applied.' |
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[2938] | 425 | CALL message( 'stg_check_parameters', 'PA0035', 1, 2, 0, 6, 0 ) |
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| 426 | ENDIF |
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| 427 | IF ( bc_ns /= 'cyclic' ) THEN |
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| 428 | message_string = 'Using synthetic turbulence generator ' // & |
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[3347] | 429 | 'requires &bc_ns = "cyclic", ' // & |
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| 430 | 'if not offline nesting is applied.' |
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[2938] | 431 | CALL message( 'stg_check_parameters', 'PA0037', 1, 2, 0, 6, 0 ) |
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| 432 | ENDIF |
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| 433 | |
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[2259] | 434 | ENDIF |
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| 435 | |
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| 436 | IF ( turbulent_inflow ) THEN |
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| 437 | message_string = 'Using synthetic turbulence generator ' // & |
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[2938] | 438 | 'in combination &with turbulent_inflow = .T. '// & |
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| 439 | 'is not allowed' |
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[2259] | 440 | CALL message( 'stg_check_parameters', 'PA0039', 1, 2, 0, 6, 0 ) |
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| 441 | ENDIF |
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| 442 | |
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| 443 | ENDIF |
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| 444 | |
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| 445 | END SUBROUTINE stg_check_parameters |
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| 446 | |
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| 447 | |
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| 448 | !------------------------------------------------------------------------------! |
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| 449 | ! Description: |
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| 450 | ! ------------ |
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| 451 | !> Header output for synthetic turbulence generator |
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| 452 | !------------------------------------------------------------------------------! |
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| 453 | SUBROUTINE stg_header ( io ) |
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| 454 | |
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| 455 | |
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| 456 | IMPLICIT NONE |
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| 457 | |
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| 458 | INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file |
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| 459 | |
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| 460 | ! |
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| 461 | !-- Write synthetic turbulence generator Header |
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| 462 | WRITE( io, 1 ) |
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[2776] | 463 | IF ( use_syn_turb_gen ) THEN |
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[2259] | 464 | WRITE( io, 2 ) |
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| 465 | ELSE |
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| 466 | WRITE( io, 3 ) |
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| 467 | ENDIF |
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[3347] | 468 | |
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| 469 | IF ( parametrize_inflow_turbulence ) THEN |
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| 470 | WRITE( io, 4 ) dt_stg_adjust |
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| 471 | ELSE |
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| 472 | WRITE( io, 5 ) |
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| 473 | ENDIF |
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[2259] | 474 | |
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| 475 | 1 FORMAT (//' Synthetic turbulence generator information:'/ & |
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| 476 | ' ------------------------------------------'/) |
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[3347] | 477 | 2 FORMAT (' synthetic turbulence generator is switched on') |
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| 478 | 3 FORMAT (' synthetic turbulence generator is switched off') |
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[3348] | 479 | 4 FORMAT (' imposed turbulence statistics are parametrized and ajdusted to boundary-layer development each ', F8.2, ' s' ) |
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[3347] | 480 | 5 FORMAT (' imposed turbulence is read from file' ) |
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[2259] | 481 | |
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| 482 | END SUBROUTINE stg_header |
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| 483 | |
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| 484 | |
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| 485 | !------------------------------------------------------------------------------! |
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| 486 | ! Description: |
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| 487 | ! ------------ |
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| 488 | !> Initialization of the synthetic turbulence generator |
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| 489 | !------------------------------------------------------------------------------! |
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| 490 | SUBROUTINE stg_init |
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| 491 | |
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| 492 | |
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| 493 | USE arrays_3d, & |
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[3347] | 494 | ONLY: dzw, ddzw, u_init, v_init, zu |
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[2259] | 495 | |
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| 496 | USE control_parameters, & |
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[3241] | 497 | ONLY: child_domain, coupling_char, e_init, nesting_offline, rans_mode |
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[2259] | 498 | |
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| 499 | USE grid_variables, & |
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[3288] | 500 | ONLY: ddx, ddy, dx, dy |
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[2259] | 501 | |
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[2938] | 502 | USE indices, & |
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| 503 | ONLY: nz |
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[2259] | 504 | |
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[2945] | 505 | USE pmc_interface, & |
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| 506 | ONLY : rans_mode_parent |
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[2938] | 507 | |
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[2945] | 508 | |
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[2259] | 509 | IMPLICIT NONE |
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| 510 | |
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[3347] | 511 | LOGICAL :: file_stg_exist = .FALSE. !< flag indicating whether parameter file for Reynolds stress and length scales exist |
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[2938] | 512 | |
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[2669] | 513 | #if defined( __parallel ) |
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[2259] | 514 | INTEGER(KIND=MPI_ADDRESS_KIND) :: extent !< extent of new MPI type |
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| 515 | INTEGER(KIND=MPI_ADDRESS_KIND) :: tob=0 !< dummy variable |
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[2669] | 516 | #endif |
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[2259] | 517 | |
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[2938] | 518 | INTEGER(iwp) :: i !> grid index in x-direction |
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[2259] | 519 | INTEGER(iwp) :: j !> loop index |
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| 520 | INTEGER(iwp) :: k !< index |
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| 521 | INTEGER(iwp) :: newtype !< dummy MPI type |
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| 522 | INTEGER(iwp) :: realsize !< size of REAL variables |
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| 523 | INTEGER(iwp) :: nseed !< dimension of random number seed |
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| 524 | INTEGER(iwp) :: startseed = 1234567890 !< start seed for random number generator |
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| 525 | |
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| 526 | ! |
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| 527 | !-- Dummy variables used for reading profiles |
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| 528 | REAL(wp) :: d1 !< u profile |
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| 529 | REAL(wp) :: d2 !< v profile |
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| 530 | REAL(wp) :: d3 !< w profile |
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| 531 | REAL(wp) :: d5 !< e profile |
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| 532 | REAL(wp) :: d11 !< vertical interpolation for a11 |
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| 533 | REAL(wp) :: d21 !< vertical interpolation for a21 |
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| 534 | REAL(wp) :: d22 !< vertical interpolation for a22 |
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| 535 | REAL(wp) :: luy !< length scale for u in y direction |
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| 536 | REAL(wp) :: luz !< length scale for u in z direction |
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| 537 | REAL(wp) :: lvy !< length scale for v in y direction |
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| 538 | REAL(wp) :: lvz !< length scale for v in z direction |
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| 539 | REAL(wp) :: lwy !< length scale for w in y direction |
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| 540 | REAL(wp) :: lwz !< length scale for w in z direction |
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[3038] | 541 | REAL(wp) :: nnz !< increment used to determine processor decomposition of z-axis along x and y direction |
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[2259] | 542 | REAL(wp) :: zz !< height |
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| 543 | |
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[2938] | 544 | |
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[2259] | 545 | #if defined( __parallel ) |
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| 546 | CALL MPI_BARRIER( comm2d, ierr ) |
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| 547 | #endif |
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| 548 | |
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| 549 | CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' ) |
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| 550 | |
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[2669] | 551 | #if defined( __parallel ) |
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[2259] | 552 | ! |
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[2938] | 553 | !-- Determine processor decomposition of z-axis along x- and y-direction |
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| 554 | nnz = nz / pdims(1) |
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[2945] | 555 | nzb_x_stg = 1 + myidx * INT( nnz ) |
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| 556 | nzt_x_stg = ( myidx + 1 ) * INT( nnz ) |
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[2938] | 557 | |
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[3038] | 558 | IF ( MOD( nz , pdims(1) ) /= 0 .AND. myidx == id_stg_right ) & |
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[2945] | 559 | nzt_x_stg = nzt_x_stg + myidx * ( nnz - INT( nnz ) ) |
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[2938] | 560 | |
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[3182] | 561 | IF ( nesting_offline .OR. ( child_domain .AND. rans_mode_parent & |
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| 562 | .AND. .NOT. rans_mode ) ) THEN |
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[2938] | 563 | nnz = nz / pdims(2) |
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[2945] | 564 | nzb_y_stg = 1 + myidy * INT( nnz ) |
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| 565 | nzt_y_stg = ( myidy + 1 ) * INT( nnz ) |
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[2938] | 566 | |
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[2945] | 567 | IF ( MOD( nz , pdims(2) ) /= 0 .AND. myidy == id_stg_north ) & |
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[3038] | 568 | nzt_y_stg = nzt_y_stg + myidy * ( nnz - INT( nnz ) ) |
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[2938] | 569 | ENDIF |
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| 570 | |
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| 571 | ! |
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[2259] | 572 | !-- Define MPI type used in stg_generate_seed_yz to gather vertical splitted |
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| 573 | !-- velocity seeds |
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| 574 | CALL MPI_TYPE_SIZE( MPI_REAL, realsize, ierr ) |
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| 575 | extent = 1 * realsize |
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[2938] | 576 | ! |
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[3038] | 577 | !-- Set-up MPI datatyp to involve all cores for turbulence generation at yz |
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| 578 | !-- layer |
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[2938] | 579 | !-- stg_type_yz: yz-slice with vertical bounds nzb:nzt+1 |
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[2259] | 580 | CALL MPI_TYPE_CREATE_SUBARRAY( 2, [nzt-nzb+2,nyng-nysg+1], & |
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| 581 | [1,nyng-nysg+1], [0,0], MPI_ORDER_FORTRAN, MPI_REAL, newtype, ierr ) |
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| 582 | CALL MPI_TYPE_CREATE_RESIZED( newtype, tob, extent, stg_type_yz, ierr ) |
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| 583 | CALL MPI_TYPE_COMMIT( stg_type_yz, ierr ) |
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| 584 | CALL MPI_TYPE_FREE( newtype, ierr ) |
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| 585 | |
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[2938] | 586 | ! stg_type_yz_small: yz-slice with vertical bounds nzb_x_stg:nzt_x_stg+1 |
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[2945] | 587 | CALL MPI_TYPE_CREATE_SUBARRAY( 2, [nzt_x_stg-nzb_x_stg+2,nyng-nysg+1], & |
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[2259] | 588 | [1,nyng-nysg+1], [0,0], MPI_ORDER_FORTRAN, MPI_REAL, newtype, ierr ) |
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| 589 | CALL MPI_TYPE_CREATE_RESIZED( newtype, tob, extent, stg_type_yz_small, ierr ) |
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| 590 | CALL MPI_TYPE_COMMIT( stg_type_yz_small, ierr ) |
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| 591 | CALL MPI_TYPE_FREE( newtype, ierr ) |
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| 592 | |
---|
| 593 | ! receive count and displacement for MPI_GATHERV in stg_generate_seed_yz |
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[2938] | 594 | ALLOCATE( recv_count_yz(pdims(1)), displs_yz(pdims(1)) ) |
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[2259] | 595 | |
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[2938] | 596 | recv_count_yz = nzt_x_stg-nzb_x_stg + 1 |
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| 597 | recv_count_yz(pdims(1)) = recv_count_yz(pdims(1)) + 1 |
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[2259] | 598 | |
---|
| 599 | DO j = 1, pdims(1) |
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[2938] | 600 | displs_yz(j) = 0 + (nzt_x_stg-nzb_x_stg+1) * (j-1) |
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[2259] | 601 | ENDDO |
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[2938] | 602 | ! |
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[3038] | 603 | !-- Set-up MPI datatyp to involve all cores for turbulence generation at xz |
---|
| 604 | !-- layer |
---|
[2938] | 605 | !-- stg_type_xz: xz-slice with vertical bounds nzb:nzt+1 |
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[3182] | 606 | IF ( nesting_offline .OR. ( child_domain .AND. rans_mode_parent & |
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| 607 | .AND. .NOT. rans_mode ) ) THEN |
---|
[2945] | 608 | CALL MPI_TYPE_CREATE_SUBARRAY( 2, [nzt-nzb+2,nxrg-nxlg+1], & |
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[2938] | 609 | [1,nxrg-nxlg+1], [0,0], MPI_ORDER_FORTRAN, MPI_REAL, newtype, ierr ) |
---|
| 610 | CALL MPI_TYPE_CREATE_RESIZED( newtype, tob, extent, stg_type_xz, ierr ) |
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| 611 | CALL MPI_TYPE_COMMIT( stg_type_xz, ierr ) |
---|
| 612 | CALL MPI_TYPE_FREE( newtype, ierr ) |
---|
| 613 | |
---|
| 614 | ! stg_type_yz_small: xz-slice with vertical bounds nzb_x_stg:nzt_x_stg+1 |
---|
[2945] | 615 | CALL MPI_TYPE_CREATE_SUBARRAY( 2, [nzt_y_stg-nzb_y_stg+2,nxrg-nxlg+1], & |
---|
[2938] | 616 | [1,nxrg-nxlg+1], [0,0], MPI_ORDER_FORTRAN, MPI_REAL, newtype, ierr ) |
---|
| 617 | CALL MPI_TYPE_CREATE_RESIZED( newtype, tob, extent, stg_type_xz_small, ierr ) |
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| 618 | CALL MPI_TYPE_COMMIT( stg_type_xz_small, ierr ) |
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| 619 | CALL MPI_TYPE_FREE( newtype, ierr ) |
---|
| 620 | |
---|
| 621 | ! receive count and displacement for MPI_GATHERV in stg_generate_seed_yz |
---|
| 622 | ALLOCATE( recv_count_xz(pdims(2)), displs_xz(pdims(2)) ) |
---|
| 623 | |
---|
| 624 | recv_count_xz = nzt_y_stg-nzb_y_stg + 1 |
---|
| 625 | recv_count_xz(pdims(2)) = recv_count_xz(pdims(2)) + 1 |
---|
| 626 | |
---|
| 627 | DO j = 1, pdims(2) |
---|
| 628 | displs_xz(j) = 0 + (nzt_y_stg-nzb_y_stg+1) * (j-1) |
---|
| 629 | ENDDO |
---|
| 630 | |
---|
| 631 | ENDIF |
---|
| 632 | |
---|
[2669] | 633 | #endif |
---|
[2259] | 634 | ! |
---|
| 635 | !-- Define seed of random number |
---|
| 636 | CALL RANDOM_SEED() |
---|
| 637 | CALL RANDOM_SEED( size=nseed ) |
---|
| 638 | ALLOCATE( seed(1:nseed) ) |
---|
| 639 | DO j = 1, nseed |
---|
| 640 | seed(j) = startseed + j |
---|
| 641 | ENDDO |
---|
| 642 | CALL RANDOM_SEED(put=seed) |
---|
[3347] | 643 | ! |
---|
| 644 | !-- Allocate required arrays |
---|
| 645 | !-- mean_inflow profiles must not be allocated in offline nesting |
---|
| 646 | IF ( .NOT. nesting_offline .AND. .NOT. child_domain ) THEN |
---|
| 647 | IF ( .NOT. ALLOCATED( mean_inflow_profiles ) ) & |
---|
| 648 | ALLOCATE( mean_inflow_profiles(nzb:nzt+1,1:num_mean_inflow_profiles) ) |
---|
| 649 | ENDIF |
---|
[2259] | 650 | |
---|
[3347] | 651 | ALLOCATE ( a11(nzb:nzt+1), a21(nzb:nzt+1), a22(nzb:nzt+1), & |
---|
| 652 | a31(nzb:nzt+1), a32(nzb:nzt+1), a33(nzb:nzt+1), & |
---|
| 653 | nux(nzb:nzt+1), nuy(nzb:nzt+1), nuz(nzb:nzt+1), & |
---|
| 654 | nvx(nzb:nzt+1), nvy(nzb:nzt+1), nvz(nzb:nzt+1), & |
---|
| 655 | nwx(nzb:nzt+1), nwy(nzb:nzt+1), nwz(nzb:nzt+1), & |
---|
| 656 | r11(nzb:nzt+1), r21(nzb:nzt+1), r22(nzb:nzt+1), & |
---|
| 657 | r31(nzb:nzt+1), r32(nzb:nzt+1), r33(nzb:nzt+1), & |
---|
| 658 | tu(nzb:nzt+1), tv(nzb:nzt+1), tw(nzb:nzt+1) ) |
---|
| 659 | |
---|
| 660 | ALLOCATE ( dist_xz(nzb:nzt+1,nxlg:nxrg,3) ) |
---|
| 661 | ALLOCATE ( dist_yz(nzb:nzt+1,nysg:nyng,3) ) |
---|
| 662 | dist_xz = 0.0_wp |
---|
| 663 | dist_yz = 0.0_wp |
---|
| 664 | ! |
---|
[2259] | 665 | !-- Read inflow profile |
---|
| 666 | !-- Height levels of profiles in input profile is as follows: |
---|
| 667 | !-- zu: luy, luz, tu, lvy, lvz, tv, r11, r21, r22, d1, d2, d5 |
---|
| 668 | !-- zw: lwy, lwz, tw, r31, r32, r33, d3 |
---|
| 669 | !-- WARNING: zz is not used at the moment |
---|
[2938] | 670 | INQUIRE( FILE = 'STG_PROFILES' // TRIM( coupling_char ), & |
---|
| 671 | EXIST = file_stg_exist ) |
---|
[2259] | 672 | |
---|
[2938] | 673 | IF ( file_stg_exist ) THEN |
---|
[2259] | 674 | |
---|
[2938] | 675 | OPEN( 90, FILE='STG_PROFILES'//TRIM( coupling_char ), STATUS='OLD', & |
---|
| 676 | FORM='FORMATTED') |
---|
| 677 | ! |
---|
| 678 | !-- Skip header |
---|
| 679 | READ( 90, * ) |
---|
[2259] | 680 | |
---|
[3182] | 681 | DO k = nzb+1, nzt+1 |
---|
[2938] | 682 | READ( 90, * ) zz, luy, luz, tu(k), lvy, lvz, tv(k), lwy, lwz, tw(k), & |
---|
| 683 | r11(k), r21(k), r22(k), r31(k), r32(k), r33(k), & |
---|
| 684 | d1, d2, d3, d5 |
---|
| 685 | |
---|
[2259] | 686 | ! |
---|
[3182] | 687 | !-- Convert length scales from meter to number of grid points. |
---|
[2938] | 688 | nuy(k) = INT( luy * ddy ) |
---|
[3182] | 689 | nuz(k) = INT( luz * ddzw(k) ) |
---|
[2938] | 690 | nvy(k) = INT( lvy * ddy ) |
---|
[3182] | 691 | nvz(k) = INT( lvz * ddzw(k) ) |
---|
[2938] | 692 | nwy(k) = INT( lwy * ddy ) |
---|
[3182] | 693 | nwz(k) = INT( lwz * ddzw(k) ) |
---|
[2938] | 694 | ! |
---|
| 695 | !-- Workaround, assume isotropic turbulence |
---|
| 696 | nwx(k) = nwy(k) |
---|
| 697 | nvx(k) = nvy(k) |
---|
| 698 | nux(k) = nuy(k) |
---|
| 699 | ! |
---|
| 700 | !-- Save Mean inflow profiles |
---|
| 701 | IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN |
---|
| 702 | mean_inflow_profiles(k,1) = d1 |
---|
| 703 | mean_inflow_profiles(k,2) = d2 |
---|
| 704 | ! mean_inflow_profiles(k,4) = d4 |
---|
| 705 | mean_inflow_profiles(k,5) = d5 |
---|
| 706 | ENDIF |
---|
| 707 | ENDDO |
---|
[3182] | 708 | ! |
---|
| 709 | !-- Set lenght scales at surface grid point |
---|
| 710 | nuy(nzb) = nuy(nzb+1) |
---|
| 711 | nuz(nzb) = nuz(nzb+1) |
---|
| 712 | nvy(nzb) = nvy(nzb+1) |
---|
| 713 | nvz(nzb) = nvz(nzb+1) |
---|
| 714 | nwy(nzb) = nwy(nzb+1) |
---|
| 715 | nwz(nzb) = nwz(nzb+1) |
---|
| 716 | |
---|
[2938] | 717 | CLOSE( 90 ) |
---|
[3347] | 718 | ! |
---|
| 719 | !-- Calculate coefficient matrix from Reynolds stress tensor |
---|
| 720 | !-- (Lund rotation) |
---|
| 721 | CALL calc_coeff_matrix |
---|
| 722 | ! |
---|
| 723 | !-- No information about turbulence and its length scales are available. |
---|
| 724 | !-- Instead, parametrize turbulence which is imposed at the boundaries. |
---|
| 725 | !-- Set flag which indicates that turbulence is parametrized, which is done |
---|
| 726 | !-- later when energy-balance models are already initialized. This is |
---|
| 727 | !-- because the STG needs information about surface properties such as |
---|
| 728 | !-- roughness to build 'realistic' turbulence profiles. |
---|
[2938] | 729 | ELSE |
---|
[2259] | 730 | ! |
---|
[3347] | 731 | !-- Set flag indicating that turbulence is parametrized |
---|
| 732 | parametrize_inflow_turbulence = .TRUE. |
---|
| 733 | ! |
---|
| 734 | !-- Determine boundary-layer depth, which is used to initialize lenght |
---|
| 735 | !-- scales |
---|
| 736 | CALL calc_scaling_variables |
---|
| 737 | ! |
---|
| 738 | !-- Initialize lenght and time scales, which in turn are used |
---|
| 739 | !-- to initialize the filter functions. |
---|
| 740 | CALL calc_length_and_time_scale |
---|
| 741 | |
---|
[2938] | 742 | ENDIF |
---|
| 743 | |
---|
[2259] | 744 | ! |
---|
[3347] | 745 | !-- Assign initial profiles. Note, this is only required if turbulent |
---|
| 746 | !-- inflow from the left is desired, not in case of any of the |
---|
| 747 | !-- nesting (offline or self nesting) approaches. |
---|
[3182] | 748 | IF ( .NOT. nesting_offline .AND. .NOT. child_domain ) THEN |
---|
[2938] | 749 | u_init = mean_inflow_profiles(:,1) |
---|
| 750 | v_init = mean_inflow_profiles(:,2) |
---|
| 751 | !pt_init = mean_inflow_profiles(:,4) |
---|
| 752 | e_init = MAXVAL( mean_inflow_profiles(:,5) ) |
---|
| 753 | ENDIF |
---|
[3347] | 754 | |
---|
[2938] | 755 | ! |
---|
[2259] | 756 | !-- Define the size of the filter functions and allocate them. |
---|
| 757 | merg = 0 |
---|
| 758 | |
---|
| 759 | ! arrays must be large enough to cover the largest length scale |
---|
| 760 | DO k = nzb, nzt+1 |
---|
[2938] | 761 | j = MAX( ABS(nux(k)), ABS(nuy(k)), ABS(nuz(k)), & |
---|
| 762 | ABS(nvx(k)), ABS(nvy(k)), ABS(nvz(k)), & |
---|
| 763 | ABS(nwx(k)), ABS(nwy(k)), ABS(nwz(k)) ) |
---|
[2259] | 764 | IF ( j > merg ) merg = j |
---|
| 765 | ENDDO |
---|
| 766 | |
---|
| 767 | merg = 2 * merg |
---|
| 768 | mergp = merg + nbgp |
---|
| 769 | |
---|
[2938] | 770 | ALLOCATE ( bux(-merg:merg,nzb:nzt+1), & |
---|
| 771 | buy(-merg:merg,nzb:nzt+1), & |
---|
| 772 | buz(-merg:merg,nzb:nzt+1), & |
---|
| 773 | bvx(-merg:merg,nzb:nzt+1), & |
---|
| 774 | bvy(-merg:merg,nzb:nzt+1), & |
---|
| 775 | bvz(-merg:merg,nzb:nzt+1), & |
---|
| 776 | bwx(-merg:merg,nzb:nzt+1), & |
---|
| 777 | bwy(-merg:merg,nzb:nzt+1), & |
---|
| 778 | bwz(-merg:merg,nzb:nzt+1) ) |
---|
[2259] | 779 | |
---|
| 780 | ! |
---|
[2938] | 781 | !-- Allocate velocity seeds for turbulence at xz-layer |
---|
| 782 | ALLOCATE ( fu_xz( nzb:nzt+1,nxlg:nxrg), fuo_xz(nzb:nzt+1,nxlg:nxrg), & |
---|
| 783 | fv_xz( nzb:nzt+1,nxlg:nxrg), fvo_xz(nzb:nzt+1,nxlg:nxrg), & |
---|
| 784 | fw_xz( nzb:nzt+1,nxlg:nxrg), fwo_xz(nzb:nzt+1,nxlg:nxrg) ) |
---|
[2259] | 785 | |
---|
[2938] | 786 | ! |
---|
| 787 | !-- Allocate velocity seeds for turbulence at yz-layer |
---|
| 788 | ALLOCATE ( fu_yz( nzb:nzt+1,nysg:nyng), fuo_yz(nzb:nzt+1,nysg:nyng), & |
---|
| 789 | fv_yz( nzb:nzt+1,nysg:nyng), fvo_yz(nzb:nzt+1,nysg:nyng), & |
---|
| 790 | fw_yz( nzb:nzt+1,nysg:nyng), fwo_yz(nzb:nzt+1,nysg:nyng) ) |
---|
[2259] | 791 | |
---|
[2938] | 792 | fu_xz = 0.0_wp |
---|
| 793 | fuo_xz = 0.0_wp |
---|
| 794 | fv_xz = 0.0_wp |
---|
| 795 | fvo_xz = 0.0_wp |
---|
| 796 | fw_xz = 0.0_wp |
---|
| 797 | fwo_xz = 0.0_wp |
---|
| 798 | |
---|
| 799 | fu_yz = 0.0_wp |
---|
| 800 | fuo_yz = 0.0_wp |
---|
| 801 | fv_yz = 0.0_wp |
---|
| 802 | fvo_yz = 0.0_wp |
---|
| 803 | fw_yz = 0.0_wp |
---|
| 804 | fwo_yz = 0.0_wp |
---|
| 805 | |
---|
[2259] | 806 | ! |
---|
| 807 | !-- Create filter functions |
---|
[2938] | 808 | CALL stg_filter_func( nux, bux ) !filter ux |
---|
[2259] | 809 | CALL stg_filter_func( nuy, buy ) !filter uy |
---|
| 810 | CALL stg_filter_func( nuz, buz ) !filter uz |
---|
[2938] | 811 | CALL stg_filter_func( nvx, bvx ) !filter vx |
---|
[2259] | 812 | CALL stg_filter_func( nvy, bvy ) !filter vy |
---|
| 813 | CALL stg_filter_func( nvz, bvz ) !filter vz |
---|
[2938] | 814 | CALL stg_filter_func( nwx, bwx ) !filter wx |
---|
[2259] | 815 | CALL stg_filter_func( nwy, bwy ) !filter wy |
---|
| 816 | CALL stg_filter_func( nwz, bwz ) !filter wz |
---|
| 817 | |
---|
| 818 | #if defined( __parallel ) |
---|
| 819 | CALL MPI_BARRIER( comm2d, ierr ) |
---|
| 820 | #endif |
---|
| 821 | |
---|
| 822 | ! |
---|
[2938] | 823 | !-- In case of restart, calculate velocity seeds fu, fv, fw from former |
---|
| 824 | ! time step. |
---|
| 825 | ! Bug: fu, fv, fw are different in those heights where a11, a22, a33 |
---|
| 826 | ! are 0 compared to the prerun. This is mostly for k=nzt+1. |
---|
[2259] | 827 | IF ( TRIM( initializing_actions ) == 'read_restart_data' ) THEN |
---|
[2938] | 828 | IF ( myidx == id_stg_left .OR. myidx == id_stg_right ) THEN |
---|
| 829 | |
---|
| 830 | IF ( myidx == id_stg_left ) i = -1 |
---|
| 831 | IF ( myidx == id_stg_right ) i = nxr+1 |
---|
| 832 | |
---|
[2259] | 833 | DO j = nysg, nyng |
---|
| 834 | DO k = nzb, nzt+1 |
---|
| 835 | |
---|
| 836 | IF ( a11(k) .NE. 0._wp ) THEN |
---|
[2938] | 837 | fu_yz(k,j) = ( u(k,j,i) / mc_factor - u_init(k) ) / a11(k) |
---|
[2259] | 838 | ELSE |
---|
[2938] | 839 | fu_yz(k,j) = 0._wp |
---|
[2259] | 840 | ENDIF |
---|
| 841 | |
---|
| 842 | IF ( a22(k) .NE. 0._wp ) THEN |
---|
[2938] | 843 | fv_yz(k,j) = ( v(k,j,i) / mc_factor - a21(k) * fu_yz(k,j) - & |
---|
| 844 | v_init(k) ) / a22(k) |
---|
[2259] | 845 | ELSE |
---|
[2938] | 846 | fv_yz(k,j) = 0._wp |
---|
[2259] | 847 | ENDIF |
---|
| 848 | |
---|
| 849 | IF ( a33(k) .NE. 0._wp ) THEN |
---|
[2938] | 850 | fw_yz(k,j) = ( w(k,j,i) / mc_factor - a31(k) * fu_yz(k,j) - & |
---|
| 851 | a32(k) * fv_yz(k,j) ) / a33(k) |
---|
[2259] | 852 | ELSE |
---|
[2938] | 853 | fw_yz = 0._wp |
---|
[2259] | 854 | ENDIF |
---|
| 855 | |
---|
| 856 | ENDDO |
---|
| 857 | ENDDO |
---|
| 858 | ENDIF |
---|
| 859 | ENDIF |
---|
| 860 | |
---|
| 861 | CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' ) |
---|
| 862 | |
---|
| 863 | END SUBROUTINE stg_init |
---|
| 864 | |
---|
| 865 | |
---|
| 866 | !------------------------------------------------------------------------------! |
---|
| 867 | ! Description: |
---|
| 868 | ! ------------ |
---|
| 869 | !> Calculate filter function bxx from length scale nxx following Eg.9 and 10 |
---|
| 870 | !> (Xie and Castro, 2008) |
---|
| 871 | !------------------------------------------------------------------------------! |
---|
| 872 | SUBROUTINE stg_filter_func( nxx, bxx ) |
---|
| 873 | |
---|
| 874 | |
---|
| 875 | IMPLICIT NONE |
---|
| 876 | |
---|
| 877 | INTEGER(iwp) :: k !< loop index |
---|
| 878 | INTEGER(iwp) :: n_k !< length scale nXX in height k |
---|
| 879 | INTEGER(iwp) :: n_k2 !< n_k * 2 |
---|
| 880 | INTEGER(iwp) :: nf !< index for length scales |
---|
| 881 | |
---|
| 882 | REAL(wp) :: bdenom !< denominator for filter functions bXX |
---|
| 883 | REAL(wp) :: qsi = 1.0_wp !< minimization factor |
---|
| 884 | |
---|
| 885 | INTEGER(iwp), DIMENSION(:) :: nxx(nzb:nzt+1) !< length scale (in gp) |
---|
| 886 | |
---|
| 887 | REAL(wp), DIMENSION(:,:) :: bxx(-merg:merg,nzb:nzt+1) !< filter function |
---|
| 888 | |
---|
| 889 | |
---|
| 890 | bxx = 0.0_wp |
---|
| 891 | |
---|
| 892 | DO k = nzb, nzt+1 |
---|
| 893 | bdenom = 0.0_wp |
---|
| 894 | n_k = nxx(k) |
---|
| 895 | IF ( n_k /= 0 ) THEN |
---|
| 896 | n_k2 = n_k * 2 |
---|
| 897 | |
---|
| 898 | ! |
---|
| 899 | !-- ( Eq.10 )^2 |
---|
| 900 | DO nf = -n_k2, n_k2 |
---|
| 901 | bdenom = bdenom + EXP( -qsi * pi * ABS(nf) / n_k )**2 |
---|
| 902 | ENDDO |
---|
| 903 | |
---|
| 904 | ! |
---|
| 905 | !-- ( Eq.9 ) |
---|
| 906 | bdenom = SQRT( bdenom ) |
---|
| 907 | DO nf = -n_k2, n_k2 |
---|
| 908 | bxx(nf,k) = EXP( -qsi * pi * ABS(nf) / n_k ) / bdenom |
---|
| 909 | ENDDO |
---|
| 910 | ENDIF |
---|
| 911 | ENDDO |
---|
| 912 | |
---|
[3347] | 913 | END SUBROUTINE stg_filter_func |
---|
[2259] | 914 | |
---|
| 915 | |
---|
| 916 | !------------------------------------------------------------------------------! |
---|
| 917 | ! Description: |
---|
| 918 | ! ------------ |
---|
| 919 | !> Parin for &stg_par for synthetic turbulence generator |
---|
| 920 | !------------------------------------------------------------------------------! |
---|
| 921 | SUBROUTINE stg_parin |
---|
| 922 | |
---|
| 923 | |
---|
| 924 | IMPLICIT NONE |
---|
| 925 | |
---|
| 926 | CHARACTER (LEN=80) :: line !< dummy string that contains the current line of the parameter file |
---|
| 927 | |
---|
| 928 | |
---|
[3347] | 929 | NAMELIST /stg_par/ dt_stg_adjust, dt_stg_call, use_syn_turb_gen |
---|
[2259] | 930 | |
---|
| 931 | line = ' ' |
---|
| 932 | |
---|
| 933 | ! |
---|
| 934 | !-- Try to find stg package |
---|
| 935 | REWIND ( 11 ) |
---|
| 936 | line = ' ' |
---|
| 937 | DO WHILE ( INDEX( line, '&stg_par' ) == 0 ) |
---|
[3246] | 938 | READ ( 11, '(A)', END=20 ) line |
---|
[2259] | 939 | ENDDO |
---|
| 940 | BACKSPACE ( 11 ) |
---|
| 941 | |
---|
| 942 | ! |
---|
| 943 | !-- Read namelist |
---|
[3246] | 944 | READ ( 11, stg_par, ERR = 10, END = 20 ) |
---|
[2259] | 945 | |
---|
| 946 | ! |
---|
| 947 | !-- Set flag that indicates that the synthetic turbulence generator is switched |
---|
| 948 | !-- on |
---|
[2776] | 949 | syn_turb_gen = .TRUE. |
---|
[3246] | 950 | GOTO 20 |
---|
[2259] | 951 | |
---|
[3246] | 952 | 10 BACKSPACE( 11 ) |
---|
[3248] | 953 | READ( 11 , '(A)') line |
---|
| 954 | CALL parin_fail_message( 'stg_par', line ) |
---|
[2563] | 955 | |
---|
[3246] | 956 | 20 CONTINUE |
---|
[2259] | 957 | |
---|
| 958 | END SUBROUTINE stg_parin |
---|
| 959 | |
---|
| 960 | |
---|
| 961 | !------------------------------------------------------------------------------! |
---|
| 962 | ! Description: |
---|
| 963 | ! ------------ |
---|
[2894] | 964 | !> This routine reads the respective restart data. |
---|
[2576] | 965 | !------------------------------------------------------------------------------! |
---|
[2894] | 966 | SUBROUTINE stg_rrd_global( found ) |
---|
[2576] | 967 | |
---|
| 968 | |
---|
[2894] | 969 | USE control_parameters, & |
---|
| 970 | ONLY: length, restart_string |
---|
[2576] | 971 | |
---|
| 972 | |
---|
[2894] | 973 | IMPLICIT NONE |
---|
[2576] | 974 | |
---|
[3044] | 975 | LOGICAL, INTENT(OUT) :: found !< flag indicating if variable was found |
---|
[2259] | 976 | |
---|
| 977 | |
---|
[2894] | 978 | found = .TRUE. |
---|
[2259] | 979 | |
---|
[3038] | 980 | |
---|
[2894] | 981 | SELECT CASE ( restart_string(1:length) ) |
---|
[2259] | 982 | |
---|
[2894] | 983 | CASE ( 'mc_factor' ) |
---|
| 984 | READ ( 13 ) mc_factor |
---|
| 985 | CASE ( 'use_syn_turb_gen' ) |
---|
| 986 | READ ( 13 ) use_syn_turb_gen |
---|
[2259] | 987 | |
---|
[2894] | 988 | CASE DEFAULT |
---|
[2259] | 989 | |
---|
[3038] | 990 | found = .FALSE. |
---|
[2259] | 991 | |
---|
[2894] | 992 | END SELECT |
---|
[2259] | 993 | |
---|
| 994 | |
---|
[2894] | 995 | END SUBROUTINE stg_rrd_global |
---|
[2259] | 996 | |
---|
| 997 | |
---|
| 998 | !------------------------------------------------------------------------------! |
---|
| 999 | ! Description: |
---|
| 1000 | ! ------------ |
---|
| 1001 | !> This routine writes the respective restart data. |
---|
| 1002 | !------------------------------------------------------------------------------! |
---|
[2894] | 1003 | SUBROUTINE stg_wrd_global |
---|
[2259] | 1004 | |
---|
| 1005 | |
---|
| 1006 | IMPLICIT NONE |
---|
| 1007 | |
---|
[2894] | 1008 | CALL wrd_write_string( 'mc_factor' ) |
---|
[2259] | 1009 | WRITE ( 14 ) mc_factor |
---|
| 1010 | |
---|
[2894] | 1011 | CALL wrd_write_string( 'use_syn_turb_gen' ) |
---|
| 1012 | WRITE ( 14 ) use_syn_turb_gen |
---|
[2259] | 1013 | |
---|
| 1014 | |
---|
[2894] | 1015 | END SUBROUTINE stg_wrd_global |
---|
[2259] | 1016 | |
---|
[2894] | 1017 | |
---|
[2259] | 1018 | !------------------------------------------------------------------------------! |
---|
| 1019 | ! Description: |
---|
| 1020 | ! ------------ |
---|
| 1021 | !> Create turbulent inflow fields for u, v, w with prescribed length scales and |
---|
| 1022 | !> Reynolds stress tensor after a method of Xie and Castro (2008), modified |
---|
| 1023 | !> following suggestions of Kim et al. (2013), and using a Lund rotation |
---|
| 1024 | !> (Lund, 1998). |
---|
| 1025 | !------------------------------------------------------------------------------! |
---|
| 1026 | SUBROUTINE stg_main |
---|
| 1027 | |
---|
| 1028 | |
---|
| 1029 | USE arrays_3d, & |
---|
| 1030 | ONLY: dzw |
---|
| 1031 | |
---|
| 1032 | USE control_parameters, & |
---|
[3182] | 1033 | ONLY: child_domain, dt_3d, intermediate_timestep_count, & |
---|
| 1034 | nesting_offline, rans_mode, simulated_time, volume_flow_initial |
---|
[2259] | 1035 | |
---|
[2938] | 1036 | USE grid_variables, & |
---|
| 1037 | ONLY: dx, dy |
---|
| 1038 | |
---|
[2259] | 1039 | USE indices, & |
---|
[2938] | 1040 | ONLY: wall_flags_0 |
---|
[2259] | 1041 | |
---|
| 1042 | USE statistics, & |
---|
| 1043 | ONLY: weight_substep |
---|
| 1044 | |
---|
[2945] | 1045 | USE pmc_interface, & |
---|
| 1046 | ONLY : rans_mode_parent |
---|
[2259] | 1047 | |
---|
[2945] | 1048 | |
---|
[2259] | 1049 | IMPLICIT NONE |
---|
| 1050 | |
---|
[2938] | 1051 | INTEGER(iwp) :: i !< grid index in x-direction |
---|
[2259] | 1052 | INTEGER(iwp) :: j !< loop index in y-direction |
---|
| 1053 | INTEGER(iwp) :: k !< loop index in z-direction |
---|
| 1054 | |
---|
| 1055 | REAL(wp) :: dt_stg !< wheighted subtimestep |
---|
| 1056 | REAL(wp) :: mc_factor_l !< local mass flux correction factor |
---|
[2938] | 1057 | REAL(wp) :: volume_flow !< mass flux through lateral boundary |
---|
| 1058 | REAL(wp) :: volume_flow_l !< local mass flux through lateral boundary |
---|
[2259] | 1059 | |
---|
| 1060 | CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' ) |
---|
| 1061 | |
---|
| 1062 | ! |
---|
| 1063 | !-- Calculate time step which is needed for filter functions |
---|
[3347] | 1064 | dt_stg = MAX( dt_3d, dt_stg_call ) !* weight_substep(intermediate_timestep_count) |
---|
[2259] | 1065 | ! |
---|
| 1066 | !-- Initial value of fu, fv, fw |
---|
| 1067 | IF ( simulated_time == 0.0_wp .AND. .NOT. velocity_seed_initialized ) THEN |
---|
[2938] | 1068 | CALL stg_generate_seed_yz( nuy, nuz, buy, buz, fu_yz, id_stg_left ) |
---|
| 1069 | CALL stg_generate_seed_yz( nvy, nvz, bvy, bvz, fv_yz, id_stg_left ) |
---|
| 1070 | CALL stg_generate_seed_yz( nwy, nwz, bwy, bwz, fw_yz, id_stg_left ) |
---|
| 1071 | |
---|
[3182] | 1072 | IF ( nesting_offline .OR. ( child_domain .AND. rans_mode_parent & |
---|
| 1073 | .AND. .NOT. rans_mode ) ) THEN |
---|
[2938] | 1074 | ! |
---|
| 1075 | !-- Generate turbulence at right boundary |
---|
| 1076 | CALL stg_generate_seed_yz( nuy, nuz, buy, buz, fu_yz, id_stg_right ) |
---|
| 1077 | CALL stg_generate_seed_yz( nvy, nvz, bvy, bvz, fv_yz, id_stg_right ) |
---|
| 1078 | CALL stg_generate_seed_yz( nwy, nwz, bwy, bwz, fw_yz, id_stg_right ) |
---|
| 1079 | ! |
---|
| 1080 | !-- Generate turbulence at north boundary |
---|
| 1081 | CALL stg_generate_seed_xz( nux, nuz, bux, buz, fu_xz, id_stg_north ) |
---|
| 1082 | CALL stg_generate_seed_xz( nvx, nvz, bvx, bvz, fv_xz, id_stg_north ) |
---|
| 1083 | CALL stg_generate_seed_xz( nwx, nwz, bwx, bwz, fw_xz, id_stg_north ) |
---|
| 1084 | ! |
---|
| 1085 | !-- Generate turbulence at south boundary |
---|
| 1086 | CALL stg_generate_seed_xz( nux, nuz, bux, buz, fu_xz, id_stg_south ) |
---|
| 1087 | CALL stg_generate_seed_xz( nvx, nvz, bvx, bvz, fv_xz, id_stg_south ) |
---|
| 1088 | CALL stg_generate_seed_xz( nwx, nwz, bwx, bwz, fw_xz, id_stg_south ) |
---|
| 1089 | ENDIF |
---|
[2259] | 1090 | velocity_seed_initialized = .TRUE. |
---|
| 1091 | ENDIF |
---|
[3347] | 1092 | |
---|
[2259] | 1093 | ! |
---|
| 1094 | !-- New set of fu, fv, fw |
---|
[2938] | 1095 | CALL stg_generate_seed_yz( nuy, nuz, buy, buz, fuo_yz, id_stg_left ) |
---|
| 1096 | CALL stg_generate_seed_yz( nvy, nvz, bvy, bvz, fvo_yz, id_stg_left ) |
---|
| 1097 | CALL stg_generate_seed_yz( nwy, nwz, bwy, bwz, fwo_yz, id_stg_left ) |
---|
[3347] | 1098 | |
---|
[3182] | 1099 | IF ( nesting_offline .OR. ( child_domain .AND. rans_mode_parent & |
---|
[3347] | 1100 | .AND. .NOT. rans_mode ) ) THEN |
---|
[2938] | 1101 | ! |
---|
[3347] | 1102 | !-- Generate turbulence at right boundary |
---|
| 1103 | CALL stg_generate_seed_yz( nuy, nuz, buy, buz, fuo_yz, id_stg_right ) |
---|
| 1104 | CALL stg_generate_seed_yz( nvy, nvz, bvy, bvz, fvo_yz, id_stg_right ) |
---|
| 1105 | CALL stg_generate_seed_yz( nwy, nwz, bwy, bwz, fwo_yz, id_stg_right ) |
---|
[2938] | 1106 | ! |
---|
[3347] | 1107 | !-- Generate turbulence at north boundary |
---|
| 1108 | CALL stg_generate_seed_xz( nux, nuz, bux, buz, fuo_xz, id_stg_north ) |
---|
| 1109 | CALL stg_generate_seed_xz( nvx, nvz, bvx, bvz, fvo_xz, id_stg_north ) |
---|
| 1110 | CALL stg_generate_seed_xz( nwx, nwz, bwx, bwz, fwo_xz, id_stg_north ) |
---|
[2938] | 1111 | ! |
---|
[3347] | 1112 | !-- Generate turbulence at south boundary |
---|
| 1113 | CALL stg_generate_seed_xz( nux, nuz, bux, buz, fuo_xz, id_stg_south ) |
---|
| 1114 | CALL stg_generate_seed_xz( nvx, nvz, bvx, bvz, fvo_xz, id_stg_south ) |
---|
| 1115 | CALL stg_generate_seed_xz( nwx, nwz, bwx, bwz, fwo_xz, id_stg_south ) |
---|
[2938] | 1116 | ENDIF |
---|
[3347] | 1117 | |
---|
[2938] | 1118 | ! |
---|
| 1119 | !-- Turbulence generation at left and or right boundary |
---|
| 1120 | IF ( myidx == id_stg_left .OR. myidx == id_stg_right ) THEN |
---|
[3347] | 1121 | |
---|
[2259] | 1122 | DO j = nysg, nyng |
---|
| 1123 | DO k = nzb, nzt + 1 |
---|
| 1124 | ! |
---|
| 1125 | !-- Update fu, fv, fw following Eq. 14 of Xie and Castro (2008) |
---|
| 1126 | IF ( tu(k) == 0.0_wp ) THEN |
---|
[2938] | 1127 | fu_yz(k,j) = fuo_yz(k,j) |
---|
[2259] | 1128 | ELSE |
---|
[3347] | 1129 | fu_yz(k,j) = fu_yz(k,j) * EXP( -pi * dt_stg * 0.5_wp / tu(k) ) + & |
---|
[2938] | 1130 | fuo_yz(k,j) * SQRT( 1.0_wp - EXP( -pi * dt_stg / tu(k) ) ) |
---|
[2259] | 1131 | ENDIF |
---|
| 1132 | |
---|
| 1133 | IF ( tv(k) == 0.0_wp ) THEN |
---|
[2938] | 1134 | fv_yz(k,j) = fvo_yz(k,j) |
---|
[2259] | 1135 | ELSE |
---|
[3347] | 1136 | fv_yz(k,j) = fv_yz(k,j) * EXP( -pi * dt_stg * 0.5_wp / tv(k) ) + & |
---|
[2938] | 1137 | fvo_yz(k,j) * SQRT( 1.0_wp - EXP( -pi * dt_stg / tv(k) ) ) |
---|
[2259] | 1138 | ENDIF |
---|
| 1139 | |
---|
| 1140 | IF ( tw(k) == 0.0_wp ) THEN |
---|
[2938] | 1141 | fw_yz(k,j) = fwo_yz(k,j) |
---|
[2259] | 1142 | ELSE |
---|
[3347] | 1143 | fw_yz(k,j) = fw_yz(k,j) * EXP( -pi * dt_stg * 0.5_wp / tw(k) ) + & |
---|
[2938] | 1144 | fwo_yz(k,j) * SQRT( 1.0_wp - EXP( -pi * dt_stg / tw(k) ) ) |
---|
[2259] | 1145 | ENDIF |
---|
| 1146 | ! |
---|
| 1147 | !-- Lund rotation following Eq. 17 in Xie and Castro (2008). |
---|
| 1148 | !-- Additional factors are added to improve the variance of v and w |
---|
| 1149 | IF( k == 0 ) THEN |
---|
[2938] | 1150 | dist_yz(k,j,1) = 0.0_wp |
---|
| 1151 | dist_yz(k,j,2) = 0.0_wp |
---|
| 1152 | dist_yz(k,j,3) = 0.0_wp |
---|
[2259] | 1153 | ELSE |
---|
[3347] | 1154 | dist_yz(k,j,1) = MIN( a11(k) * fu_yz(k,j), 3.0_wp ) |
---|
[2259] | 1155 | !experimental test of 1.2 |
---|
[3347] | 1156 | dist_yz(k,j,2) = MIN( ( SQRT( a22(k) / MAXVAL(a22) ) & |
---|
| 1157 | * 1.2_wp ) & |
---|
| 1158 | * ( a21(k) * fu_yz(k,j) & |
---|
| 1159 | + a22(k) * fv_yz(k,j) ), 3.0_wp ) |
---|
| 1160 | dist_yz(k,j,3) = MIN( ( SQRT(a33(k) / MAXVAL(a33) ) & |
---|
| 1161 | * 1.3_wp ) & |
---|
| 1162 | * ( a31(k) * fu_yz(k,j) & |
---|
| 1163 | + a32(k) * fv_yz(k,j) & |
---|
| 1164 | + a33(k) * fw_yz(k,j) ), 3.0_wp ) |
---|
[2259] | 1165 | ENDIF |
---|
| 1166 | |
---|
| 1167 | ENDDO |
---|
| 1168 | ENDDO |
---|
| 1169 | |
---|
| 1170 | ! |
---|
| 1171 | !-- Mass flux correction following Kim et al. (2013) |
---|
| 1172 | !-- This correction factor insures that the mass flux is preserved at the |
---|
| 1173 | !-- inflow boundary |
---|
[3182] | 1174 | IF ( .NOT. nesting_offline .AND. .NOT. child_domain ) THEN |
---|
[2938] | 1175 | mc_factor_l = 0.0_wp |
---|
| 1176 | mc_factor = 0.0_wp |
---|
| 1177 | DO j = nys, nyn |
---|
| 1178 | DO k = nzb+1, nzt |
---|
| 1179 | mc_factor_l = mc_factor_l + dzw(k) * & |
---|
| 1180 | ( mean_inflow_profiles(k,1) + dist_yz(k,j,1) ) |
---|
| 1181 | ENDDO |
---|
[2259] | 1182 | ENDDO |
---|
| 1183 | |
---|
| 1184 | #if defined( __parallel ) |
---|
[3347] | 1185 | CALL MPI_ALLREDUCE( mc_factor_l, mc_factor, 1, MPI_REAL, MPI_SUM, & |
---|
| 1186 | comm1dy, ierr ) |
---|
[2259] | 1187 | #else |
---|
[2938] | 1188 | mc_factor = mc_factor_l |
---|
[2259] | 1189 | #endif |
---|
| 1190 | |
---|
[2938] | 1191 | mc_factor = volume_flow_initial(1) / mc_factor |
---|
[2259] | 1192 | |
---|
| 1193 | ! |
---|
[2938] | 1194 | !-- Add disturbance at the inflow |
---|
| 1195 | DO j = nysg, nyng |
---|
| 1196 | DO k = nzb, nzt+1 |
---|
| 1197 | u(k,j,-nbgp+1:0) = ( mean_inflow_profiles(k,1) + & |
---|
| 1198 | dist_yz(k,j,1) ) * mc_factor |
---|
| 1199 | v(k,j,-nbgp:-1) = ( mean_inflow_profiles(k,2) + & |
---|
| 1200 | dist_yz(k,j,2) ) * mc_factor |
---|
| 1201 | w(k,j,-nbgp:-1) = dist_yz(k,j,3) * mc_factor |
---|
| 1202 | ENDDO |
---|
[2259] | 1203 | ENDDO |
---|
[2938] | 1204 | |
---|
| 1205 | ELSE |
---|
| 1206 | ! |
---|
| 1207 | !-- First, calculate volume flow at yz boundary |
---|
| 1208 | IF ( myidx == id_stg_left ) i = nxl |
---|
| 1209 | IF ( myidx == id_stg_right ) i = nxr+1 |
---|
| 1210 | |
---|
| 1211 | volume_flow_l = 0.0_wp |
---|
| 1212 | volume_flow = 0.0_wp |
---|
| 1213 | mc_factor_l = 0.0_wp |
---|
| 1214 | mc_factor = 0.0_wp |
---|
| 1215 | DO j = nys, nyn |
---|
| 1216 | DO k = nzb+1, nzt |
---|
| 1217 | volume_flow_l = volume_flow_l + u(k,j,i) * dzw(k) * dy & |
---|
[3038] | 1218 | * MERGE( 1.0_wp, 0.0_wp, & |
---|
[2938] | 1219 | BTEST( wall_flags_0(k,j,i), 1 ) ) |
---|
| 1220 | |
---|
| 1221 | mc_factor_l = mc_factor_l + ( u(k,j,i) + dist_yz(k,j,1) ) & |
---|
| 1222 | * dzw(k) * dy & |
---|
[3038] | 1223 | * MERGE( 1.0_wp, 0.0_wp, & |
---|
[2938] | 1224 | BTEST( wall_flags_0(k,j,i), 1 ) ) |
---|
| 1225 | ENDDO |
---|
| 1226 | ENDDO |
---|
| 1227 | #if defined( __parallel ) |
---|
| 1228 | CALL MPI_ALLREDUCE( volume_flow_l, volume_flow, & |
---|
| 1229 | 1, MPI_REAL, MPI_SUM, comm1dy, ierr ) |
---|
| 1230 | CALL MPI_ALLREDUCE( mc_factor_l, mc_factor, & |
---|
| 1231 | 1, MPI_REAL, MPI_SUM, comm1dy, ierr ) |
---|
| 1232 | #else |
---|
| 1233 | volume_flow = volume_flow_l |
---|
| 1234 | mc_factor = mc_factor_l |
---|
| 1235 | #endif |
---|
| 1236 | |
---|
| 1237 | mc_factor = volume_flow / mc_factor |
---|
| 1238 | |
---|
| 1239 | ! |
---|
| 1240 | !-- Add disturbances |
---|
| 1241 | IF ( myidx == id_stg_left ) THEN |
---|
[3186] | 1242 | DO j = nys, nyn |
---|
[3347] | 1243 | DO k = nzb+1, nzt |
---|
[3186] | 1244 | u(k,j,0) = ( u(k,j,0) + dist_yz(k,j,1) ) & |
---|
| 1245 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1246 | BTEST( wall_flags_0(k,j,0), 1 ) ) |
---|
[3347] | 1247 | u(k,j,-1) = u(k,j,0) |
---|
[3186] | 1248 | v(k,j,-1) = ( v(k,j,-1) + dist_yz(k,j,2) ) & |
---|
| 1249 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1250 | BTEST( wall_flags_0(k,j,-1), 2 ) ) |
---|
| 1251 | w(k,j,-1) = ( w(k,j,-1) + dist_yz(k,j,3) ) & |
---|
| 1252 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1253 | BTEST( wall_flags_0(k,j,-1), 3 ) ) |
---|
[2938] | 1254 | ENDDO |
---|
| 1255 | ENDDO |
---|
| 1256 | ENDIF |
---|
| 1257 | IF ( myidx == id_stg_right ) THEN |
---|
[3186] | 1258 | DO j = nys, nyn |
---|
[3347] | 1259 | DO k = nzb+1, nzt |
---|
[3186] | 1260 | u(k,j,nxr+1) = ( u(k,j,nxr+1) + dist_yz(k,j,1) ) & |
---|
| 1261 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1262 | BTEST( wall_flags_0(k,j,nxr+1), 1 ) ) |
---|
| 1263 | v(k,j,nxr+1) = ( v(k,j,nxr+1) + dist_yz(k,j,2) ) & |
---|
| 1264 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1265 | BTEST( wall_flags_0(k,j,nxr+1), 2 ) ) |
---|
| 1266 | w(k,j,nxr+1) = ( w(k,j,nxr+1) + dist_yz(k,j,3) ) & |
---|
| 1267 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1268 | BTEST( wall_flags_0(k,j,nxr+1), 3 ) ) |
---|
[2938] | 1269 | ENDDO |
---|
| 1270 | ENDDO |
---|
| 1271 | ENDIF |
---|
| 1272 | ENDIF |
---|
| 1273 | |
---|
| 1274 | ENDIF |
---|
| 1275 | ! |
---|
| 1276 | !-- Turbulence generation at north and south boundary |
---|
| 1277 | IF ( myidy == id_stg_north .OR. myidy == id_stg_south ) THEN |
---|
[3347] | 1278 | |
---|
[2938] | 1279 | DO i = nxlg, nxrg |
---|
| 1280 | DO k = nzb, nzt + 1 |
---|
| 1281 | ! |
---|
| 1282 | !-- Update fu, fv, fw following Eq. 14 of Xie and Castro (2008) |
---|
| 1283 | IF ( tu(k) == 0.0_wp ) THEN |
---|
| 1284 | fu_xz(k,i) = fuo_xz(k,i) |
---|
| 1285 | ELSE |
---|
| 1286 | fu_xz(k,i) = fu_xz(k,i) * EXP( -pi * dt_stg * 0.5_wp / tu(k) ) + & |
---|
| 1287 | fuo_xz(k,i) * SQRT( 1.0_wp - EXP( -pi * dt_stg / tu(k) ) ) |
---|
| 1288 | ENDIF |
---|
| 1289 | |
---|
| 1290 | IF ( tv(k) == 0.0_wp ) THEN |
---|
| 1291 | fv_xz(k,i) = fvo_xz(k,i) |
---|
| 1292 | ELSE |
---|
| 1293 | fv_xz(k,i) = fv_xz(k,i) * EXP( -pi * dt_stg * 0.5_wp / tv(k) ) + & |
---|
[3347] | 1294 | fvo_xz(k,i) * SQRT( 1.0_wp - EXP( -pi * dt_stg / tv(k) ) ) |
---|
[2938] | 1295 | ENDIF |
---|
[3347] | 1296 | |
---|
[2938] | 1297 | IF ( tw(k) == 0.0_wp ) THEN |
---|
| 1298 | fw_xz(k,i) = fwo_xz(k,i) |
---|
| 1299 | ELSE |
---|
| 1300 | fw_xz(k,i) = fw_xz(k,i) * EXP( -pi * dt_stg * 0.5_wp / tw(k) ) + & |
---|
[3347] | 1301 | fwo_xz(k,i) * SQRT( 1.0_wp - EXP( -pi * dt_stg / tw(k) ) ) |
---|
[2938] | 1302 | ENDIF |
---|
| 1303 | ! |
---|
| 1304 | !-- Lund rotation following Eq. 17 in Xie and Castro (2008). |
---|
| 1305 | !-- Additional factors are added to improve the variance of v and w |
---|
| 1306 | IF( k == 0 ) THEN |
---|
| 1307 | dist_xz(k,i,1) = 0.0_wp |
---|
| 1308 | dist_xz(k,i,2) = 0.0_wp |
---|
| 1309 | dist_xz(k,i,3) = 0.0_wp |
---|
| 1310 | |
---|
| 1311 | ELSE |
---|
[3347] | 1312 | dist_xz(k,i,1) = MIN( a11(k) * fu_xz(k,i), 3.0_wp ) |
---|
[2938] | 1313 | !experimental test of 1.2 |
---|
[3347] | 1314 | dist_xz(k,i,2) = MIN( ( SQRT( a22(k) / MAXVAL(a22) ) & |
---|
| 1315 | * 1.2_wp ) & |
---|
| 1316 | * ( a21(k) * fu_xz(k,i) & |
---|
| 1317 | + a22(k) * fv_xz(k,i) ), 3.0_wp ) |
---|
| 1318 | dist_xz(k,i,3) = MIN( ( SQRT(a33(k) / MAXVAL(a33) ) & |
---|
| 1319 | * 1.3_wp ) & |
---|
| 1320 | * ( a31(k) * fu_xz(k,i) & |
---|
| 1321 | + a32(k) * fv_xz(k,i) & |
---|
| 1322 | + a33(k) * fw_xz(k,i) ), 3.0_wp ) |
---|
[2938] | 1323 | ENDIF |
---|
| 1324 | |
---|
| 1325 | ENDDO |
---|
[2259] | 1326 | ENDDO |
---|
[3347] | 1327 | |
---|
[2938] | 1328 | ! |
---|
| 1329 | !-- Mass flux correction following Kim et al. (2013) |
---|
| 1330 | !-- This correction factor insures that the mass flux is preserved at the |
---|
| 1331 | !-- inflow boundary. |
---|
| 1332 | !-- First, calculate volume flow at xz boundary |
---|
| 1333 | IF ( myidy == id_stg_south ) j = nys |
---|
| 1334 | IF ( myidy == id_stg_north ) j = nyn+1 |
---|
[2259] | 1335 | |
---|
[2938] | 1336 | volume_flow_l = 0.0_wp |
---|
| 1337 | volume_flow = 0.0_wp |
---|
| 1338 | mc_factor_l = 0.0_wp |
---|
| 1339 | mc_factor = 0.0_wp |
---|
| 1340 | DO i = nxl, nxr |
---|
| 1341 | DO k = nzb+1, nzt |
---|
[2945] | 1342 | volume_flow_l = volume_flow_l + v(k,j,i) * dzw(k) * dx & |
---|
[3038] | 1343 | * MERGE( 1.0_wp, 0.0_wp, & |
---|
[2938] | 1344 | BTEST( wall_flags_0(k,j,i), 2 ) ) |
---|
| 1345 | |
---|
[2945] | 1346 | mc_factor_l = mc_factor_l + ( v(k,j,i) + dist_xz(k,i,2) ) & |
---|
| 1347 | * dzw(k) * dx & |
---|
[3038] | 1348 | * MERGE( 1.0_wp, 0.0_wp, & |
---|
[2938] | 1349 | BTEST( wall_flags_0(k,j,i), 2 ) ) |
---|
| 1350 | ENDDO |
---|
| 1351 | ENDDO |
---|
| 1352 | #if defined( __parallel ) |
---|
[2945] | 1353 | CALL MPI_ALLREDUCE( volume_flow_l, volume_flow, & |
---|
[2938] | 1354 | 1, MPI_REAL, MPI_SUM, comm1dx, ierr ) |
---|
[2945] | 1355 | CALL MPI_ALLREDUCE( mc_factor_l, mc_factor, & |
---|
[2938] | 1356 | 1, MPI_REAL, MPI_SUM, comm1dx, ierr ) |
---|
| 1357 | #else |
---|
| 1358 | volume_flow = volume_flow_l |
---|
| 1359 | mc_factor = mc_factor_l |
---|
| 1360 | #endif |
---|
| 1361 | |
---|
| 1362 | mc_factor = volume_flow / mc_factor |
---|
| 1363 | |
---|
| 1364 | ! |
---|
| 1365 | !-- Add disturbances |
---|
| 1366 | IF ( myidy == id_stg_south ) THEN |
---|
| 1367 | |
---|
[3186] | 1368 | DO i = nxl, nxr |
---|
[3347] | 1369 | DO k = nzb+1, nzt |
---|
[3186] | 1370 | u(k,-1,i) = ( u(k,-1,i) + dist_xz(k,i,1) ) & |
---|
| 1371 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1372 | BTEST( wall_flags_0(k,-1,i), 1 ) ) |
---|
| 1373 | v(k,0,i) = ( v(k,0,i) + dist_xz(k,i,2) ) & |
---|
| 1374 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1375 | BTEST( wall_flags_0(k,0,i), 2 ) ) |
---|
[3347] | 1376 | v(k,-1,i) = v(k,0,i) |
---|
[3186] | 1377 | w(k,-1,i) = ( w(k,-1,i) + dist_xz(k,i,3) ) & |
---|
| 1378 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
| 1379 | BTEST( wall_flags_0(k,-1,i), 3 ) ) |
---|
[2938] | 1380 | ENDDO |
---|
| 1381 | ENDDO |
---|
| 1382 | ENDIF |
---|
| 1383 | IF ( myidy == id_stg_north ) THEN |
---|
| 1384 | |
---|
[3186] | 1385 | DO i = nxl, nxr |
---|
[3347] | 1386 | DO k = nzb+1, nzt |
---|
| 1387 | u(k,nyn+1,i) = ( u(k,nyn+1,i) + dist_xz(k,i,1) ) & |
---|
| 1388 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
[3186] | 1389 | BTEST( wall_flags_0(k,nyn+1,i), 1 ) ) |
---|
[3347] | 1390 | v(k,nyn+1,i) = ( v(k,nyn+1,i) + dist_xz(k,i,2) ) & |
---|
| 1391 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
[3186] | 1392 | BTEST( wall_flags_0(k,nyn+1,i), 2 ) ) |
---|
[3347] | 1393 | w(k,nyn+1,i) = ( w(k,nyn+1,i) + dist_xz(k,i,3) ) & |
---|
| 1394 | * mc_factor * MERGE( 1.0_wp, 0.0_wp, & |
---|
[3186] | 1395 | BTEST( wall_flags_0(k,nyn+1,i), 3 ) ) |
---|
[2938] | 1396 | ENDDO |
---|
| 1397 | ENDDO |
---|
| 1398 | ENDIF |
---|
[2259] | 1399 | ENDIF |
---|
[3347] | 1400 | ! |
---|
| 1401 | !-- Finally, set time counter for calling STG to zero |
---|
| 1402 | time_stg_call = 0.0_wp |
---|
[2259] | 1403 | |
---|
| 1404 | CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' ) |
---|
| 1405 | |
---|
| 1406 | END SUBROUTINE stg_main |
---|
| 1407 | |
---|
| 1408 | !------------------------------------------------------------------------------! |
---|
| 1409 | ! Description: |
---|
| 1410 | ! ------------ |
---|
| 1411 | !> Generate a set of random number rand_it wich is equal on each PE |
---|
| 1412 | !> and calculate the velocity seed f_n. |
---|
| 1413 | !> f_n is splitted in vertical direction by the number of PEs in x-direction and |
---|
| 1414 | !> and each PE calculates a vertical subsection of f_n. At the the end, all |
---|
| 1415 | !> parts are collected to form the full array. |
---|
| 1416 | !------------------------------------------------------------------------------! |
---|
[2938] | 1417 | SUBROUTINE stg_generate_seed_yz( n_y, n_z, b_y, b_z, f_n, id ) |
---|
[2259] | 1418 | |
---|
| 1419 | |
---|
| 1420 | USE indices, & |
---|
| 1421 | ONLY: ny |
---|
| 1422 | |
---|
| 1423 | IMPLICIT NONE |
---|
| 1424 | |
---|
[2938] | 1425 | INTEGER(iwp) :: id !< core ids at respective boundaries |
---|
[2259] | 1426 | INTEGER(iwp) :: j !< loop index in y-direction |
---|
| 1427 | INTEGER(iwp) :: jj !< loop index in y-direction |
---|
| 1428 | INTEGER(iwp) :: k !< loop index in z-direction |
---|
| 1429 | INTEGER(iwp) :: kk !< loop index in z-direction |
---|
| 1430 | INTEGER(iwp) :: send_count !< send count for MPI_GATHERV |
---|
| 1431 | |
---|
| 1432 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_y !< length scale in y-direction |
---|
| 1433 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_z !< length scale in z-direction |
---|
| 1434 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_y2 !< n_y*2 |
---|
| 1435 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_z2 !< n_z*2 |
---|
| 1436 | |
---|
| 1437 | REAL(wp) :: nyz_inv !< inverse of number of grid points in yz-slice |
---|
| 1438 | REAL(wp) :: rand_av !< average of random number |
---|
| 1439 | REAL(wp) :: rand_sigma_inv !< inverse of stdev of random number |
---|
| 1440 | |
---|
[3347] | 1441 | REAL(wp), DIMENSION(-merg:merg,nzb:nzt+1) :: b_y !< filter function in y-direction |
---|
| 1442 | REAL(wp), DIMENSION(-merg:merg,nzb:nzt+1) :: b_z !< filter function in z-direction |
---|
[2938] | 1443 | REAL(wp), DIMENSION(nzb_x_stg:nzt_x_stg+1,nysg:nyng) :: f_n_l !< local velocity seed |
---|
[2259] | 1444 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng) :: f_n !< velocity seed |
---|
| 1445 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: rand_it !< random number |
---|
| 1446 | |
---|
| 1447 | |
---|
| 1448 | ! |
---|
| 1449 | !-- Generate random numbers using a seed generated in stg_init. |
---|
| 1450 | !-- The set of random numbers are modified to have an average of 0 and |
---|
| 1451 | !-- unit variance. |
---|
| 1452 | ALLOCATE( rand_it(nzb-mergp:nzt+1+mergp,-mergp:ny+mergp) ) |
---|
| 1453 | |
---|
| 1454 | rand_av = 0.0_wp |
---|
| 1455 | rand_sigma_inv = 0.0_wp |
---|
| 1456 | nyz_inv = 1.0_wp / REAL( ( nzt+1 - nzb+1 ) * ( ny+1 ), KIND=wp ) |
---|
| 1457 | |
---|
| 1458 | DO j = 0, ny |
---|
| 1459 | DO k = nzb, nzt+1 |
---|
| 1460 | CALL RANDOM_NUMBER( rand_it(k,j) ) |
---|
| 1461 | rand_av = rand_av + rand_it(k,j) |
---|
| 1462 | ENDDO |
---|
| 1463 | ENDDO |
---|
| 1464 | |
---|
| 1465 | rand_av = rand_av * nyz_inv |
---|
| 1466 | |
---|
| 1467 | DO j = 0, ny |
---|
| 1468 | DO k = nzb, nzt+1 |
---|
| 1469 | rand_it(k,j) = rand_it(k,j) - rand_av |
---|
| 1470 | rand_sigma_inv = rand_sigma_inv + rand_it(k,j) ** 2 |
---|
| 1471 | ENDDO |
---|
| 1472 | ENDDO |
---|
| 1473 | |
---|
| 1474 | rand_sigma_inv = 1.0_wp / SQRT(rand_sigma_inv * nyz_inv) |
---|
| 1475 | |
---|
| 1476 | DO j = 0, ny |
---|
| 1477 | DO k = nzb, nzt+1 |
---|
| 1478 | rand_it(k,j) = rand_it(k,j) * rand_sigma_inv |
---|
| 1479 | ENDDO |
---|
| 1480 | ENDDO |
---|
| 1481 | |
---|
| 1482 | ! |
---|
| 1483 | !-- Periodic fill of random number in space |
---|
| 1484 | DO j = 0, ny |
---|
| 1485 | DO k = 1, mergp |
---|
| 1486 | rand_it(nzb -k,j) = rand_it(nzt+2-k,j) ! bottom margin |
---|
| 1487 | rand_it(nzt+1+k,j) = rand_it(nzb+k-1,j) ! top margin |
---|
| 1488 | ENDDO |
---|
| 1489 | ENDDO |
---|
| 1490 | DO j = 1, mergp |
---|
| 1491 | DO k = nzb-mergp, nzt+1+mergp |
---|
| 1492 | rand_it(k, -j) = rand_it(k,ny-j+1) ! south margin |
---|
| 1493 | rand_it(k,ny+j) = rand_it(k, j-1) ! north margin |
---|
| 1494 | ENDDO |
---|
| 1495 | ENDDO |
---|
| 1496 | |
---|
| 1497 | ! |
---|
| 1498 | !-- Generate velocity seed following Eq.6 of Xie and Castro (2008) |
---|
| 1499 | n_y2 = n_y * 2 |
---|
| 1500 | n_z2 = n_z * 2 |
---|
| 1501 | f_n_l = 0.0_wp |
---|
| 1502 | |
---|
| 1503 | DO j = nysg, nyng |
---|
[2938] | 1504 | DO k = nzb_x_stg, nzt_x_stg+1 |
---|
[2259] | 1505 | DO jj = -n_y2(k), n_y2(k) |
---|
| 1506 | DO kk = -n_z2(k), n_z2(k) |
---|
| 1507 | f_n_l(k,j) = f_n_l(k,j) & |
---|
| 1508 | + b_y(jj,k) * b_z(kk,k) * rand_it(k+kk,j+jj) |
---|
| 1509 | ENDDO |
---|
| 1510 | ENDDO |
---|
| 1511 | ENDDO |
---|
| 1512 | ENDDO |
---|
| 1513 | |
---|
| 1514 | DEALLOCATE( rand_it ) |
---|
| 1515 | ! |
---|
| 1516 | !-- Gather velocity seeds of full subdomain |
---|
[2938] | 1517 | send_count = nzt_x_stg - nzb_x_stg + 1 |
---|
| 1518 | IF ( nzt_x_stg == nzt ) send_count = send_count + 1 |
---|
[2259] | 1519 | |
---|
| 1520 | #if defined( __parallel ) |
---|
[2945] | 1521 | CALL MPI_GATHERV( f_n_l(nzb_x_stg,nysg), send_count, stg_type_yz_small, & |
---|
| 1522 | f_n(nzb+1,nysg), recv_count_yz, displs_yz, stg_type_yz, & |
---|
[2938] | 1523 | id, comm1dx, ierr ) |
---|
[2259] | 1524 | #else |
---|
[2938] | 1525 | f_n(nzb+1:nzt+1,nysg:nyng) = f_n_l(nzb_x_stg:nzt_x_stg+1,nysg:nyng) |
---|
[2259] | 1526 | #endif |
---|
| 1527 | |
---|
| 1528 | |
---|
| 1529 | END SUBROUTINE stg_generate_seed_yz |
---|
| 1530 | |
---|
[2938] | 1531 | |
---|
| 1532 | |
---|
| 1533 | |
---|
| 1534 | !------------------------------------------------------------------------------! |
---|
| 1535 | ! Description: |
---|
| 1536 | ! ------------ |
---|
| 1537 | !> Generate a set of random number rand_it wich is equal on each PE |
---|
| 1538 | !> and calculate the velocity seed f_n. |
---|
| 1539 | !> f_n is splitted in vertical direction by the number of PEs in y-direction and |
---|
| 1540 | !> and each PE calculates a vertical subsection of f_n. At the the end, all |
---|
| 1541 | !> parts are collected to form the full array. |
---|
| 1542 | !------------------------------------------------------------------------------! |
---|
| 1543 | SUBROUTINE stg_generate_seed_xz( n_x, n_z, b_x, b_z, f_n, id ) |
---|
| 1544 | |
---|
| 1545 | |
---|
| 1546 | USE indices, & |
---|
| 1547 | ONLY: nx |
---|
| 1548 | |
---|
| 1549 | |
---|
| 1550 | IMPLICIT NONE |
---|
| 1551 | |
---|
| 1552 | INTEGER(iwp) :: id !< core ids at respective boundaries |
---|
| 1553 | INTEGER(iwp) :: i !< loop index in x-direction |
---|
| 1554 | INTEGER(iwp) :: ii !< loop index in x-direction |
---|
| 1555 | INTEGER(iwp) :: k !< loop index in z-direction |
---|
| 1556 | INTEGER(iwp) :: kk !< loop index in z-direction |
---|
| 1557 | INTEGER(iwp) :: send_count !< send count for MPI_GATHERV |
---|
| 1558 | |
---|
| 1559 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_x !< length scale in x-direction |
---|
| 1560 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_z !< length scale in z-direction |
---|
[3347] | 1561 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_x2 !< n_x*2 |
---|
[2938] | 1562 | INTEGER(iwp), DIMENSION(nzb:nzt+1) :: n_z2 !< n_z*2 |
---|
| 1563 | |
---|
| 1564 | REAL(wp) :: nxz_inv !< inverse of number of grid points in xz-slice |
---|
| 1565 | REAL(wp) :: rand_av !< average of random number |
---|
| 1566 | REAL(wp) :: rand_sigma_inv !< inverse of stdev of random number |
---|
| 1567 | |
---|
[3347] | 1568 | REAL(wp), DIMENSION(-merg:merg,nzb:nzt+1) :: b_x !< filter function in x-direction |
---|
| 1569 | REAL(wp), DIMENSION(-merg:merg,nzb:nzt+1) :: b_z !< filter function in z-direction |
---|
[2938] | 1570 | REAL(wp), DIMENSION(nzb_y_stg:nzt_y_stg+1,nxlg:nxrg) :: f_n_l !< local velocity seed |
---|
| 1571 | REAL(wp), DIMENSION(nzb:nzt+1,nxlg:nxrg) :: f_n !< velocity seed |
---|
| 1572 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: rand_it !< random number |
---|
| 1573 | |
---|
| 1574 | |
---|
| 1575 | ! |
---|
| 1576 | !-- Generate random numbers using a seed generated in stg_init. |
---|
| 1577 | !-- The set of random numbers are modified to have an average of 0 and |
---|
| 1578 | !-- unit variance. |
---|
| 1579 | ALLOCATE( rand_it(nzb-mergp:nzt+1+mergp,-mergp:nx+mergp) ) |
---|
| 1580 | |
---|
| 1581 | rand_av = 0.0_wp |
---|
| 1582 | rand_sigma_inv = 0.0_wp |
---|
| 1583 | nxz_inv = 1.0_wp / REAL( ( nzt+1 - nzb+1 ) * ( nx+1 ), KIND=wp ) |
---|
| 1584 | |
---|
| 1585 | DO i = 0, nx |
---|
| 1586 | DO k = nzb, nzt+1 |
---|
| 1587 | CALL RANDOM_NUMBER( rand_it(k,i) ) |
---|
| 1588 | rand_av = rand_av + rand_it(k,i) |
---|
| 1589 | ENDDO |
---|
| 1590 | ENDDO |
---|
| 1591 | |
---|
| 1592 | rand_av = rand_av * nxz_inv |
---|
| 1593 | |
---|
| 1594 | DO i = 0, nx |
---|
| 1595 | DO k = nzb, nzt+1 |
---|
| 1596 | rand_it(k,i) = rand_it(k,i) - rand_av |
---|
| 1597 | rand_sigma_inv = rand_sigma_inv + rand_it(k,i) ** 2 |
---|
| 1598 | ENDDO |
---|
| 1599 | ENDDO |
---|
| 1600 | |
---|
| 1601 | rand_sigma_inv = 1.0_wp / SQRT(rand_sigma_inv * nxz_inv) |
---|
| 1602 | |
---|
| 1603 | DO i = 0, nx |
---|
| 1604 | DO k = nzb, nzt+1 |
---|
| 1605 | rand_it(k,i) = rand_it(k,i) * rand_sigma_inv |
---|
| 1606 | ENDDO |
---|
| 1607 | ENDDO |
---|
| 1608 | |
---|
| 1609 | ! |
---|
| 1610 | !-- Periodic fill of random number in space |
---|
| 1611 | DO i = 0, nx |
---|
| 1612 | DO k = 1, mergp |
---|
| 1613 | rand_it(nzb-k,i) = rand_it(nzt+2-k,i) ! bottom margin |
---|
| 1614 | rand_it(nzt+1+k,i) = rand_it(nzb+k-1,i) ! top margin |
---|
| 1615 | ENDDO |
---|
| 1616 | ENDDO |
---|
| 1617 | DO i = 1, mergp |
---|
| 1618 | DO k = nzb-mergp, nzt+1+mergp |
---|
| 1619 | rand_it(k,-i) = rand_it(k,nx-i+1) ! left margin |
---|
| 1620 | rand_it(k,nx+i) = rand_it(k,i-1) ! right margin |
---|
| 1621 | ENDDO |
---|
| 1622 | ENDDO |
---|
| 1623 | |
---|
| 1624 | ! |
---|
| 1625 | !-- Generate velocity seed following Eq.6 of Xie and Castro (2008) |
---|
| 1626 | n_x2 = n_x * 2 |
---|
| 1627 | n_z2 = n_z * 2 |
---|
| 1628 | f_n_l = 0.0_wp |
---|
| 1629 | |
---|
| 1630 | DO i = nxlg, nxrg |
---|
| 1631 | DO k = nzb_y_stg, nzt_y_stg+1 |
---|
| 1632 | DO ii = -n_x2(k), n_x2(k) |
---|
| 1633 | DO kk = -n_z2(k), n_z2(k) |
---|
| 1634 | f_n_l(k,i) = f_n_l(k,i) & |
---|
| 1635 | + b_x(ii,k) * b_z(kk,k) * rand_it(k+kk,i+ii) |
---|
| 1636 | ENDDO |
---|
| 1637 | ENDDO |
---|
| 1638 | ENDDO |
---|
| 1639 | ENDDO |
---|
| 1640 | |
---|
| 1641 | DEALLOCATE( rand_it ) |
---|
| 1642 | |
---|
| 1643 | ! |
---|
| 1644 | !-- Gather velocity seeds of full subdomain |
---|
| 1645 | send_count = nzt_y_stg - nzb_y_stg + 1 |
---|
| 1646 | IF ( nzt_y_stg == nzt ) send_count = send_count + 1 |
---|
| 1647 | |
---|
| 1648 | |
---|
| 1649 | #if defined( __parallel ) |
---|
[2945] | 1650 | CALL MPI_GATHERV( f_n_l(nzb_y_stg,nxlg), send_count, stg_type_xz_small, & |
---|
[2938] | 1651 | f_n(nzb+1,nxlg), recv_count_xz, displs_xz, stg_type_xz, & |
---|
| 1652 | id, comm1dy, ierr ) |
---|
| 1653 | #else |
---|
| 1654 | f_n(nzb+1:nzt+1,nxlg:nxrg) = f_n_l(nzb_y_stg:nzt_y_stg+1,nxlg:nxrg) |
---|
| 1655 | #endif |
---|
| 1656 | |
---|
| 1657 | |
---|
| 1658 | END SUBROUTINE stg_generate_seed_xz |
---|
| 1659 | |
---|
[3347] | 1660 | !------------------------------------------------------------------------------! |
---|
| 1661 | ! Description: |
---|
| 1662 | ! ------------ |
---|
| 1663 | !> Parametrization of the Reynolds stress tensor, following the parametrization |
---|
| 1664 | !> described in Rotach et al. (1996), which is applied in state-of-the-art |
---|
| 1665 | !> dispserion modelling. Please note, the parametrization does not distinguish |
---|
| 1666 | !> between along-wind and cross-wind turbulence. |
---|
| 1667 | !------------------------------------------------------------------------------! |
---|
| 1668 | SUBROUTINE parametrize_reynolds_stress |
---|
| 1669 | |
---|
| 1670 | USE arrays_3d, & |
---|
| 1671 | ONLY: zu |
---|
| 1672 | |
---|
| 1673 | IMPLICIT NONE |
---|
| 1674 | |
---|
| 1675 | INTEGER(iwp) :: k !< loop index in z-direction |
---|
| 1676 | |
---|
| 1677 | REAL(wp) :: zzi !< ratio of z/zi |
---|
| 1678 | |
---|
| 1679 | ! |
---|
| 1680 | !-- |
---|
| 1681 | DO k = nzb+1, nzt+1 |
---|
| 1682 | |
---|
| 1683 | IF ( zu(k) <= zi_ribulk ) THEN |
---|
| 1684 | ! |
---|
| 1685 | !-- Determine normalized height coordinate |
---|
| 1686 | zzi = zu(k) / zi_ribulk |
---|
| 1687 | ! |
---|
| 1688 | !-- u'u' and v'v'. Assume isotropy. Note, add a small negative number |
---|
| 1689 | !-- to the denominator, else the merge-function can crash if scale_l is |
---|
| 1690 | !-- zero. |
---|
| 1691 | r11(k) = scale_us**2 * ( & |
---|
| 1692 | MERGE( 0.35_wp * ( & |
---|
| 1693 | - zi_ribulk / ( kappa * scale_l - 10E-4_wp ) & |
---|
| 1694 | )**( 2.0_wp / 3.0_wp ), & |
---|
| 1695 | 0.0_wp, & |
---|
| 1696 | scale_l < 0.0_wp ) & |
---|
| 1697 | + 5.0_wp - 4.0_wp * zzi & |
---|
| 1698 | ) |
---|
| 1699 | |
---|
| 1700 | r22(k) = r11(k) |
---|
| 1701 | ! |
---|
| 1702 | !-- w'w' |
---|
| 1703 | r33(k) = scale_wm**2 * ( & |
---|
| 1704 | 1.5_wp * zzi**( 2.0_wp / 3.0_wp ) * EXP( -2.0_wp * zzi ) & |
---|
| 1705 | + ( 1.7_wp - zzi ) * ( scale_us / scale_wm )**2 & |
---|
| 1706 | ) |
---|
| 1707 | ! |
---|
| 1708 | !-- u'w' and v'w'. Assume isotropy. |
---|
| 1709 | r31(k) = - scale_us**2 * ( & |
---|
| 1710 | 1.0_wp - EXP( 3.0_wp * ( zzi - 1.0_wp ) ) & |
---|
| 1711 | ) |
---|
| 1712 | |
---|
| 1713 | r32(k) = r31(k) |
---|
| 1714 | ! |
---|
| 1715 | !-- For u'v' no parametrization exist so far - ?. For simplicity assume |
---|
| 1716 | !-- a similar profile as for u'w'. |
---|
| 1717 | r21(k) = r31(k) |
---|
| 1718 | ! |
---|
| 1719 | !-- Above the boundary layer, assmume laminar flow conditions. |
---|
| 1720 | ELSE |
---|
| 1721 | r11(k) = 10E-8_wp |
---|
| 1722 | r22(k) = 10E-8_wp |
---|
| 1723 | r33(k) = 10E-8_wp |
---|
| 1724 | r21(k) = 10E-8_wp |
---|
| 1725 | r31(k) = 10E-8_wp |
---|
| 1726 | r32(k) = 10E-8_wp |
---|
| 1727 | ENDIF |
---|
| 1728 | ! write(9,*) zu(k), r11(k), r33(k), r31(k), zi_ribulk, scale_us, scale_wm, scale_l |
---|
| 1729 | ENDDO |
---|
| 1730 | |
---|
| 1731 | ! |
---|
| 1732 | !-- Set bottom boundary condition |
---|
| 1733 | r11(nzb) = r11(nzb+1) |
---|
| 1734 | r22(nzb) = r22(nzb+1) |
---|
| 1735 | r33(nzb) = r33(nzb+1) |
---|
| 1736 | |
---|
| 1737 | r21(nzb) = r11(nzb+1) |
---|
| 1738 | r31(nzb) = r31(nzb+1) |
---|
| 1739 | r32(nzb) = r32(nzb+1) |
---|
| 1740 | |
---|
| 1741 | |
---|
| 1742 | END SUBROUTINE parametrize_reynolds_stress |
---|
| 1743 | |
---|
| 1744 | !------------------------------------------------------------------------------! |
---|
| 1745 | ! Description: |
---|
| 1746 | ! ------------ |
---|
| 1747 | !> Calculate the coefficient matrix from the Lund rotation. |
---|
| 1748 | !------------------------------------------------------------------------------! |
---|
| 1749 | SUBROUTINE calc_coeff_matrix |
---|
| 1750 | |
---|
| 1751 | IMPLICIT NONE |
---|
| 1752 | |
---|
| 1753 | INTEGER(iwp) :: k !< loop index in z-direction |
---|
| 1754 | |
---|
| 1755 | ! |
---|
| 1756 | !-- Calculate coefficient matrix. Split loops to allow for loop vectorization. |
---|
| 1757 | DO k = nzb+1, nzt+1 |
---|
| 1758 | IF ( r11(k) > 0.0_wp ) THEN |
---|
| 1759 | a11(k) = SQRT( r11(k) ) |
---|
| 1760 | a21(k) = r21(k) / a11(k) |
---|
| 1761 | a31(k) = r31(k) / a11(k) |
---|
| 1762 | ELSE |
---|
| 1763 | a11(k) = 10E-8_wp |
---|
| 1764 | a21(k) = 10E-8_wp |
---|
| 1765 | a31(k) = 10E-8_wp |
---|
| 1766 | ENDIF |
---|
| 1767 | ENDDO |
---|
| 1768 | DO k = nzb+1, nzt+1 |
---|
| 1769 | a22(k) = r22(k) - a21(k)**2 |
---|
| 1770 | IF ( a22(k) > 0.0_wp ) THEN |
---|
| 1771 | a22(k) = SQRT( a22(k) ) |
---|
| 1772 | a32(k) = r32(k) - a21(k) * a31(k) / a22(k) |
---|
| 1773 | ELSE |
---|
| 1774 | a22(k) = 10E-8_wp |
---|
| 1775 | a32(k) = 10E-8_wp |
---|
| 1776 | ENDIF |
---|
| 1777 | ENDDO |
---|
| 1778 | DO k = nzb+1, nzt+1 |
---|
| 1779 | a33(k) = r33(k) - a31(k)**2 - a32(k)**2 |
---|
| 1780 | IF ( a33(k) > 0.0_wp ) THEN |
---|
| 1781 | a33(k) = SQRT( a33(k) ) |
---|
| 1782 | ELSE |
---|
| 1783 | a33(k) = 10E-8_wp |
---|
| 1784 | ENDIF |
---|
| 1785 | ENDDO |
---|
| 1786 | ! |
---|
| 1787 | !-- Set bottom boundary condition |
---|
| 1788 | a11(nzb) = a11(nzb+1) |
---|
| 1789 | a22(nzb) = a22(nzb+1) |
---|
| 1790 | a21(nzb) = a21(nzb+1) |
---|
| 1791 | a33(nzb) = a33(nzb+1) |
---|
| 1792 | a31(nzb) = a31(nzb+1) |
---|
| 1793 | a32(nzb) = a32(nzb+1) |
---|
| 1794 | |
---|
| 1795 | END SUBROUTINE calc_coeff_matrix |
---|
| 1796 | |
---|
| 1797 | !------------------------------------------------------------------------------! |
---|
| 1798 | ! Description: |
---|
| 1799 | ! ------------ |
---|
| 1800 | !> This routine controls the re-adjustment of the turbulence statistics used |
---|
| 1801 | !> for generating turbulence at the lateral boundaries. |
---|
| 1802 | !------------------------------------------------------------------------------! |
---|
| 1803 | SUBROUTINE stg_adjust |
---|
| 1804 | |
---|
| 1805 | IMPLICIT NONE |
---|
| 1806 | |
---|
| 1807 | INTEGER(iwp) :: k |
---|
| 1808 | |
---|
| 1809 | CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' ) |
---|
| 1810 | ! |
---|
| 1811 | !-- Compute mean boundary layer height according to Richardson-Bulk |
---|
| 1812 | !-- criterion using the inflow profiles. Further velocity scale as well as |
---|
| 1813 | !-- mean friction velocity are calculated. |
---|
| 1814 | CALL calc_scaling_variables |
---|
| 1815 | ! |
---|
| 1816 | !-- Set length and time scales depending on boundary-layer height |
---|
| 1817 | CALL calc_length_and_time_scale |
---|
| 1818 | ! |
---|
| 1819 | !-- Parametrize Reynolds-stress tensor, diagonal elements as well |
---|
| 1820 | !-- as r21 (v'u'), r31 (w'u'), r32 (w'v'). Parametrization follows |
---|
| 1821 | !-- Rotach et al. (1996) and is based on boundary-layer depth, |
---|
| 1822 | !-- friction velocity and velocity scale. |
---|
| 1823 | CALL parametrize_reynolds_stress |
---|
| 1824 | ! |
---|
| 1825 | !-- Calculate coefficient matrix from Reynolds stress tensor |
---|
| 1826 | !-- (Lund rotation) |
---|
| 1827 | CALL calc_coeff_matrix |
---|
| 1828 | ! |
---|
| 1829 | !-- Determine filter functions on basis of updated length scales |
---|
| 1830 | CALL stg_filter_func( nux, bux ) !filter ux |
---|
| 1831 | CALL stg_filter_func( nuy, buy ) !filter uy |
---|
| 1832 | CALL stg_filter_func( nuz, buz ) !filter uz |
---|
| 1833 | CALL stg_filter_func( nvx, bvx ) !filter vx |
---|
| 1834 | CALL stg_filter_func( nvy, bvy ) !filter vy |
---|
| 1835 | CALL stg_filter_func( nvz, bvz ) !filter vz |
---|
| 1836 | CALL stg_filter_func( nwx, bwx ) !filter wx |
---|
| 1837 | CALL stg_filter_func( nwy, bwy ) !filter wy |
---|
| 1838 | CALL stg_filter_func( nwz, bwz ) !filter wz |
---|
| 1839 | ! |
---|
| 1840 | !-- Reset time counter for controlling next adjustment to zero |
---|
| 1841 | time_stg_adjust = 0.0_wp |
---|
| 1842 | |
---|
| 1843 | CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' ) |
---|
| 1844 | |
---|
| 1845 | END SUBROUTINE stg_adjust |
---|
| 1846 | |
---|
| 1847 | |
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| 1848 | !------------------------------------------------------------------------------! |
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| 1849 | ! Description: |
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| 1850 | ! ------------ |
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| 1851 | !> Calculates turbuluent length and time scales if these are not available |
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| 1852 | !> from measurements. |
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| 1853 | !------------------------------------------------------------------------------! |
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| 1854 | SUBROUTINE calc_length_and_time_scale |
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| 1855 | |
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| 1856 | USE arrays_3d, & |
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| 1857 | ONLY: dzw, ddzw, u_init, v_init, zu, zw |
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| 1858 | |
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| 1859 | USE grid_variables, & |
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| 1860 | ONLY: ddx, ddy, dx, dy |
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| 1861 | |
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| 1862 | USE statistics, & |
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| 1863 | ONLY: hom |
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| 1864 | |
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| 1865 | IMPLICIT NONE |
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| 1866 | |
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| 1867 | |
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| 1868 | INTEGER(iwp) :: k !< loop index in z-direction |
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| 1869 | |
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| 1870 | REAL(wp) :: length_scale !< typical length scale |
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| 1871 | |
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| 1872 | ! |
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| 1873 | !-- In initial call the boundary-layer depth can be zero. This case, set |
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| 1874 | !-- minimum value for boundary-layer depth, to setup length scales correctly. |
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| 1875 | zi_ribulk = MAX( zi_ribulk, zw(nzb+2) ) |
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| 1876 | ! |
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| 1877 | !-- Set-up default turbulent length scales. From the numerical point of |
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| 1878 | !-- view the imposed perturbations should not be immediately dissipated |
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| 1879 | !-- by the numerics. The numerical dissipation, however, acts on scales |
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| 1880 | !-- up to 8 x the grid spacing. For this reason, set the turbulence |
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| 1881 | !-- length scale to 8 time the grid spacing. Further, above the boundary |
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| 1882 | !-- layer height, set turbulence lenght scales to zero (equivalent to not |
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| 1883 | !-- imposing any perturbations) in order to save computational costs. |
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| 1884 | !-- Typical time scales are derived by assuming Taylors's hypothesis, |
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| 1885 | !-- using the length scales and the mean profiles of u- and v-component. |
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| 1886 | DO k = nzb+1, nzt+1 |
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| 1887 | |
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| 1888 | length_scale = 8.0_wp * MIN( dx, dy, dzw(k) ) |
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| 1889 | |
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| 1890 | IF ( zu(k) <= zi_ribulk ) THEN |
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| 1891 | ! |
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| 1892 | !-- Assume isotropic turbulence length scales |
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| 1893 | nux(k) = MAX( INT( length_scale * ddx ), 1 ) |
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| 1894 | nuy(k) = MAX( INT( length_scale * ddy ), 1 ) |
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| 1895 | nuz(k) = MAX( INT( length_scale * ddzw(k) ), 1 ) |
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| 1896 | nvx(k) = MAX( INT( length_scale * ddx ), 1 ) |
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| 1897 | nvy(k) = MAX( INT( length_scale * ddy ), 1 ) |
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| 1898 | nvz(k) = MAX( INT( length_scale * ddzw(k) ), 1 ) |
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| 1899 | nwx(k) = MAX( INT( length_scale * ddx ), 1 ) |
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| 1900 | nwy(k) = MAX( INT( length_scale * ddy ), 1 ) |
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| 1901 | nwz(k) = MAX( INT( length_scale * ddzw(k) ), 1 ) |
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| 1902 | ! |
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| 1903 | !-- Limit time scales, else they become very larger for low wind speed, |
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| 1904 | !-- imposing long-living inflow perturbations which in turn propagate |
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| 1905 | !-- further into the model domain. Use u_init and v_init to calculate |
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| 1906 | !-- the time scales, which will be equal to the inflow profiles, both, |
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| 1907 | !-- in offline nesting mode or in dirichlet/radiation mode. |
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| 1908 | tu(k) = MIN( dt_stg_adjust, length_scale / & |
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| 1909 | ( ABS( u_init(k) ) + 0.1_wp ) ) |
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| 1910 | tv(k) = MIN( dt_stg_adjust, length_scale / & |
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| 1911 | ( ABS( v_init(k) ) + 0.1_wp ) ) |
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| 1912 | ! |
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| 1913 | !-- Time scale of w-component is a mixture from u- and v-component. |
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| 1914 | tw(k) = SQRT( tu(k)**2 + tv(k)**2 ) |
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| 1915 | ! |
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| 1916 | !-- Above the boundary layer length scales are zero, i.e. imposed turbulence |
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| 1917 | !-- is not correlated in space and time, just white noise. This saves |
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| 1918 | !-- computations power. |
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| 1919 | ELSE |
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| 1920 | nux(k) = 0.0_wp |
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| 1921 | nuy(k) = 0.0_wp |
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| 1922 | nuz(k) = 0.0_wp |
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| 1923 | nvx(k) = 0.0_wp |
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| 1924 | nvy(k) = 0.0_wp |
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| 1925 | nvz(k) = 0.0_wp |
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| 1926 | nwx(k) = 0.0_wp |
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| 1927 | nwy(k) = 0.0_wp |
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| 1928 | nwz(k) = 0.0_wp |
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| 1929 | |
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| 1930 | tu(k) = 0.0_wp |
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| 1931 | tv(k) = 0.0_wp |
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| 1932 | tw(k) = 0.0_wp |
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| 1933 | ENDIF |
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| 1934 | ENDDO |
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| 1935 | ! |
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| 1936 | !-- Set bottom boundary condition for the length and time scales |
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| 1937 | nux(nzb) = nux(nzb+1) |
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| 1938 | nuy(nzb) = nuy(nzb+1) |
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| 1939 | nuz(nzb) = nuz(nzb+1) |
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| 1940 | nvx(nzb) = nvx(nzb+1) |
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| 1941 | nvy(nzb) = nvy(nzb+1) |
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| 1942 | nvz(nzb) = nvz(nzb+1) |
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| 1943 | nwx(nzb) = nwx(nzb+1) |
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| 1944 | nwy(nzb) = nwy(nzb+1) |
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| 1945 | nwz(nzb) = nwz(nzb+1) |
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| 1946 | |
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| 1947 | tu(nzb) = tu(nzb+1) |
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| 1948 | tv(nzb) = tv(nzb+1) |
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| 1949 | tw(nzb) = tw(nzb+1) |
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| 1950 | |
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| 1951 | |
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| 1952 | END SUBROUTINE calc_length_and_time_scale |
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| 1953 | |
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| 1954 | !------------------------------------------------------------------------------! |
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| 1955 | ! Description: |
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| 1956 | ! ------------ |
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| 1957 | !> Calculate scaling variables which are used for turbulence parametrization |
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| 1958 | !> according to Rotach et al. (1996). Scaling variables are: friction velocity, |
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| 1959 | !> boundary-layer depth, momentum velocity scale, and Obukhov length. |
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| 1960 | !------------------------------------------------------------------------------! |
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| 1961 | SUBROUTINE calc_scaling_variables |
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| 1962 | |
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| 1963 | |
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| 1964 | USE control_parameters, & |
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| 1965 | ONLY: bc_dirichlet_l, bc_dirichlet_n, bc_dirichlet_r, bc_dirichlet_s, & |
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| 1966 | humidity, pt_surface |
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| 1967 | |
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| 1968 | USE indices, & |
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| 1969 | ONLY: nx, ny |
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| 1970 | |
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| 1971 | USE surface_mod, & |
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| 1972 | ONLY: surf_def_h, surf_lsm_h, surf_usm_h |
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| 1973 | |
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| 1974 | IMPLICIT NONE |
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| 1975 | |
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| 1976 | INTEGER(iwp) :: i !< loop index in x-direction |
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| 1977 | INTEGER(iwp) :: j !< loop index in y-direction |
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| 1978 | INTEGER(iwp) :: k !< loop index in z-direction |
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| 1979 | INTEGER(iwp) :: k_ref !< index in z-direction for reference height |
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| 1980 | INTEGER(iwp) :: m !< surface element index |
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| 1981 | |
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| 1982 | REAL(wp) :: friction_vel_l !< mean friction veloctiy on subdomain |
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| 1983 | REAL(wp) :: shf_mean !< mean surface sensible heat flux |
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| 1984 | REAL(wp) :: shf_mean_l !< mean surface sensible heat flux on subdomain |
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| 1985 | REAL(wp) :: u_int !< u-component |
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| 1986 | REAL(wp) :: v_int !< v-component |
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| 1987 | REAL(wp) :: vpt_surface !< near-surface virtual potential temperature |
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| 1988 | REAL(wp) :: w_convective !< convective velocity scale |
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| 1989 | REAL(wp) :: z0_mean !< mean roughness length |
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| 1990 | REAL(wp) :: z0_mean_l !< mean roughness length on subdomain |
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| 1991 | |
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| 1992 | ! |
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| 1993 | !-- Mean friction velocity and velocity scale. Therefore, |
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| 1994 | !-- pre-calculate mean roughness length and surface sensible heat flux |
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| 1995 | !-- in the model domain, which are further used to estimate friction |
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| 1996 | !-- velocity and velocity scale. Note, for z0 linear averaging is applied, |
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| 1997 | !-- even though this is known to unestimate the effective roughness. |
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| 1998 | !-- This need to be revised later. |
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| 1999 | z0_mean_l = 0.0_wp |
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| 2000 | shf_mean_l = 0.0_wp |
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| 2001 | DO m = 1, surf_def_h(0)%ns |
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| 2002 | z0_mean_l = z0_mean_l + surf_def_h(0)%z0(m) |
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| 2003 | shf_mean_l = shf_mean_l + surf_def_h(0)%shf(m) |
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| 2004 | ENDDO |
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| 2005 | DO m = 1, surf_lsm_h%ns |
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| 2006 | z0_mean_l = z0_mean_l + surf_lsm_h%z0(m) |
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| 2007 | shf_mean_l = shf_mean_l + surf_lsm_h%shf(m) |
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| 2008 | ENDDO |
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| 2009 | DO m = 1, surf_usm_h%ns |
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| 2010 | z0_mean_l = z0_mean_l + surf_usm_h%z0(m) |
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| 2011 | shf_mean_l = shf_mean_l + surf_usm_h%shf(m) |
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| 2012 | ENDDO |
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| 2013 | |
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| 2014 | #if defined( __parallel ) |
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| 2015 | CALL MPI_ALLREDUCE( z0_mean_l, z0_mean, 1, MPI_REAL, MPI_SUM, & |
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| 2016 | comm2d, ierr ) |
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| 2017 | CALL MPI_ALLREDUCE( shf_mean_l, shf_mean, 1, MPI_REAL, MPI_SUM, & |
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| 2018 | comm2d, ierr ) |
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| 2019 | #else |
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| 2020 | z0_mean = z0_mean_l |
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| 2021 | shf_mean = shf_mean_l |
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| 2022 | #endif |
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| 2023 | z0_mean = z0_mean / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp ) |
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| 2024 | shf_mean = shf_mean / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp ) |
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| 2025 | |
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| 2026 | ! |
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| 2027 | !-- Note, Inifor does not use logarithmic interpolation of the |
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| 2028 | !-- velocity components near the ground, so that near-surface |
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| 2029 | !-- wind speed and thus the friction velocity is overestimated. |
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| 2030 | !-- However, friction velocity is used for turbulence |
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| 2031 | !-- parametrization, so that more physically meaningful values are important. |
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| 2032 | !-- Hence, derive friction velocity from wind speed at a reference height. |
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| 2033 | !-- For a first guess use 20 m, which is in the range of the first |
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| 2034 | !-- COSMO vertical level. |
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| 2035 | k_ref = MINLOC( ABS( zu - cosmo_ref ), DIM = 1 ) - 1 |
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| 2036 | |
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| 2037 | friction_vel_l = 0.0_wp |
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| 2038 | IF ( bc_dirichlet_l .OR. bc_dirichlet_r ) THEN |
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| 2039 | |
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| 2040 | i = MERGE( -1, nxr + 1, bc_dirichlet_l ) |
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| 2041 | |
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| 2042 | DO j = nys, nyn |
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| 2043 | ! |
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| 2044 | !-- Note, in u- and v- component the imposed perturbations |
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| 2045 | !-- from the STG are already included. Check whether this |
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| 2046 | !-- makes any difference compared to using the pure-mean |
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| 2047 | !-- inflow profiles. |
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| 2048 | u_int = MERGE( u(k_ref,j,i+1), u(k_ref,j,i), bc_dirichlet_l ) |
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| 2049 | v_int = v(k_ref,j,i) |
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| 2050 | ! |
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| 2051 | !-- Calculate friction velocity and sum-up. Therefore, assume |
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| 2052 | !-- neutral condtions. |
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| 2053 | friction_vel_l = friction_vel_l + kappa * & |
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| 2054 | SQRT( u_int * u_int + v_int * v_int ) / & |
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| 2055 | LOG( zu(k_ref) / z0_mean ) |
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| 2056 | |
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| 2057 | ENDDO |
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| 2058 | |
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| 2059 | ENDIF |
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| 2060 | |
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| 2061 | IF ( bc_dirichlet_s .OR. bc_dirichlet_n ) THEN |
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| 2062 | |
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| 2063 | j = MERGE( -1, nyn + 1, bc_dirichlet_s ) |
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| 2064 | |
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| 2065 | DO i = nxl, nxr |
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| 2066 | |
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| 2067 | u_int = u(k_ref,j,i) |
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| 2068 | v_int = MERGE( v(k_ref,j+1,i), v(k_ref,j,i), bc_dirichlet_s ) |
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| 2069 | |
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| 2070 | friction_vel_l = friction_vel_l + kappa * & |
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| 2071 | SQRT( u_int * u_int + v_int * v_int ) / & |
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| 2072 | LOG( zu(k_ref) / z0_mean ) |
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| 2073 | |
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| 2074 | ENDDO |
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| 2075 | |
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| 2076 | ENDIF |
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| 2077 | |
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| 2078 | #if defined( __parallel ) |
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| 2079 | CALL MPI_ALLREDUCE( friction_vel_l, scale_us, 1, MPI_REAL, MPI_SUM, & |
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| 2080 | comm2d, ierr ) |
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| 2081 | #else |
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| 2082 | scale_us = friction_vel_l |
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| 2083 | #endif |
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| 2084 | scale_us = scale_us / REAL( 2 * nx + 2 * ny, KIND = wp ) |
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| 2085 | |
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| 2086 | ! |
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| 2087 | !-- Compute mean Obukhov length |
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| 2088 | IF ( shf_mean > 0.0_wp ) THEN |
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| 2089 | scale_l = - pt_surface / ( kappa * g ) * scale_us**3 / shf_mean |
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| 2090 | ELSE |
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| 2091 | scale_l = 0.0_wp |
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| 2092 | ENDIF |
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| 2093 | |
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| 2094 | ! |
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| 2095 | !-- Compute mean convective velocity scale. Note, in case the mean heat flux |
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| 2096 | !-- is negative, set convective velocity scale to zero. |
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| 2097 | IF ( shf_mean > 0.0_wp ) THEN |
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| 2098 | w_convective = ( g * shf_mean * zi_ribulk / pt_surface )**( 1.0_wp / 3.0_wp ) |
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| 2099 | ELSE |
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| 2100 | w_convective = 0.0_wp |
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| 2101 | ENDIF |
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| 2102 | ! |
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| 2103 | !-- Finally, in order to consider also neutral or stable stratification, |
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| 2104 | !-- compute momentum velocity scale from u* and convective velocity scale, |
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| 2105 | !-- according to Rotach et al. (1996). |
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| 2106 | scale_wm = ( scale_us**3 + 0.6_wp * w_convective**3 )**( 1.0_wp / 3.0_wp ) |
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| 2107 | |
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| 2108 | END SUBROUTINE calc_scaling_variables |
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| 2109 | |
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[2259] | 2110 | END MODULE synthetic_turbulence_generator_mod |
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