[2801] | 1 | MODULE lpm_mod |
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| 2 | |
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[1682] | 3 | !> @file lpm.f90 |
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[2000] | 4 | !------------------------------------------------------------------------------! |
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[2696] | 5 | ! This file is part of the PALM model system. |
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[1036] | 6 | ! |
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[2000] | 7 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 8 | ! terms of the GNU General Public License as published by the Free Software |
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| 9 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 10 | ! version. |
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[1036] | 11 | ! |
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| 12 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 13 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 14 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 15 | ! |
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| 16 | ! You should have received a copy of the GNU General Public License along with |
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| 17 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 18 | ! |
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[2718] | 19 | ! Copyright 1997-2018 Leibniz Universitaet Hannover |
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[2000] | 20 | !------------------------------------------------------------------------------! |
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[1036] | 21 | ! |
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[230] | 22 | ! Current revisions: |
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[759] | 23 | ! ------------------ |
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[1823] | 24 | ! |
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[2701] | 25 | ! |
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[1823] | 26 | ! Former revisions: |
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| 27 | ! ----------------- |
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| 28 | ! $Id: lpm.f90 2801 2018-02-14 16:01:55Z schwenkel $ |
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[2801] | 29 | ! Changed lpm from subroutine to module. |
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| 30 | ! Introduce particle transfer in nested models. |
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| 31 | ! |
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| 32 | ! 2718 2018-01-02 08:49:38Z maronga |
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[2716] | 33 | ! Corrected "Former revisions" section |
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[2701] | 34 | ! |
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[2716] | 35 | ! 2701 2017-12-15 15:40:50Z suehring |
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| 36 | ! Changes from last commit documented |
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| 37 | ! |
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[2701] | 38 | ! 2698 2017-12-14 18:46:24Z suehring |
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[2716] | 39 | ! Grid indices passed to lpm_boundary_conds. (responsible Philipp Thiele) |
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| 40 | ! |
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| 41 | ! 2696 2017-12-14 17:12:51Z kanani |
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| 42 | ! Change in file header (GPL part) |
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| 43 | ! |
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| 44 | ! 2606 2017-11-10 10:36:31Z schwenkel |
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[2606] | 45 | ! Changed particle box locations: center of particle box now coincides |
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| 46 | ! with scalar grid point of same index. |
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| 47 | ! Renamed module and subroutines: lpm_pack_arrays_mod -> lpm_pack_and_sort_mod |
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| 48 | ! lpm_pack_all_arrays -> lpm_sort_in_subboxes, lpm_pack_arrays -> lpm_pack |
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| 49 | ! lpm_sort -> lpm_sort_timeloop_done |
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| 50 | ! |
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| 51 | ! 2418 2017-09-06 15:24:24Z suehring |
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[2417] | 52 | ! Major bugfixes in modeling SGS particle speeds (since revision 1359). |
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| 53 | ! Particle sorting added to distinguish between already completed and |
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| 54 | ! non-completed particles. |
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| 55 | ! |
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| 56 | ! 2263 2017-06-08 14:59:01Z schwenkel |
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[2263] | 57 | ! Implemented splitting and merging algorithm |
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| 58 | ! |
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| 59 | ! 2233 2017-05-30 18:08:54Z suehring |
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[1823] | 60 | ! |
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[2233] | 61 | ! 2232 2017-05-30 17:47:52Z suehring |
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| 62 | ! Adjustments to new topography concept |
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| 63 | ! |
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[2001] | 64 | ! 2000 2016-08-20 18:09:15Z knoop |
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| 65 | ! Forced header and separation lines into 80 columns |
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| 66 | ! |
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[1937] | 67 | ! 1936 2016-06-13 13:37:44Z suehring |
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| 68 | ! Call routine for deallocation of unused memory. |
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| 69 | ! Formatting adjustments |
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| 70 | ! |
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[1930] | 71 | ! 1929 2016-06-09 16:25:25Z suehring |
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| 72 | ! Call wall boundary conditions only if particles are in the vertical range of |
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| 73 | ! topography. |
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| 74 | ! |
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[1823] | 75 | ! 1822 2016-04-07 07:49:42Z hoffmann |
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[1822] | 76 | ! Tails removed. |
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| 77 | ! |
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| 78 | ! Initialization of sgs model not necessary for the use of cloud_droplets and |
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| 79 | ! use_sgs_for_particles. |
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| 80 | ! |
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| 81 | ! lpm_release_set integrated. |
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| 82 | ! |
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| 83 | ! Unused variabled removed. |
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[1321] | 84 | ! |
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[1683] | 85 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 86 | ! Code annotations made doxygen readable |
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| 87 | ! |
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[1417] | 88 | ! 1416 2014-06-04 16:04:03Z suehring |
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| 89 | ! user_lpm_advec is called for each gridpoint. |
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| 90 | ! Bugfix: in order to prevent an infinite loop, time_loop_done is set .TRUE. |
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| 91 | ! at the head of the do-loop. |
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| 92 | ! |
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[1360] | 93 | ! 1359 2014-04-11 17:15:14Z hoffmann |
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| 94 | ! New particle structure integrated. |
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| 95 | ! Kind definition added to all floating point numbers. |
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| 96 | ! |
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[1321] | 97 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 98 | ! ONLY-attribute added to USE-statements, |
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| 99 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 100 | ! kinds are defined in new module kinds, |
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| 101 | ! revision history before 2012 removed, |
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| 102 | ! comment fields (!:) to be used for variable explanations added to |
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| 103 | ! all variable declaration statements |
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[829] | 104 | ! |
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[1319] | 105 | ! 1318 2014-03-17 13:35:16Z raasch |
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| 106 | ! module interfaces removed |
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| 107 | ! |
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[1037] | 108 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 109 | ! code put under GPL (PALM 3.9) |
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| 110 | ! |
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[852] | 111 | ! 851 2012-03-15 14:32:58Z raasch |
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| 112 | ! Bugfix: resetting of particle_mask and tail mask moved from routine |
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| 113 | ! lpm_exchange_horiz to here (end of sub-timestep loop) |
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| 114 | ! |
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[850] | 115 | ! 849 2012-03-15 10:35:09Z raasch |
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| 116 | ! original routine advec_particles split into several subroutines and renamed |
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| 117 | ! lpm |
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| 118 | ! |
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[832] | 119 | ! 831 2012-02-22 00:29:39Z raasch |
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| 120 | ! thermal_conductivity_l and diff_coeff_l now depend on temperature and |
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| 121 | ! pressure |
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| 122 | ! |
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[829] | 123 | ! 828 2012-02-21 12:00:36Z raasch |
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[828] | 124 | ! fast hall/wang kernels with fixed radius/dissipation classes added, |
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| 125 | ! particle feature color renamed class, routine colker renamed |
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| 126 | ! recalculate_kernel, |
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| 127 | ! lower limit for droplet radius changed from 1E-7 to 1E-8 |
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[826] | 128 | ! |
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[828] | 129 | ! Bugfix: transformation factor for dissipation changed from 1E5 to 1E4 |
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| 130 | ! |
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[826] | 131 | ! 825 2012-02-19 03:03:44Z raasch |
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[825] | 132 | ! droplet growth by condensation may include curvature and solution effects, |
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| 133 | ! initialisation of temporary particle array for resorting removed, |
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| 134 | ! particle attributes speed_x|y|z_sgs renamed rvar1|2|3, |
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| 135 | ! module wang_kernel_mod renamed lpm_collision_kernels_mod, |
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| 136 | ! wang_collision_kernel renamed wang_kernel |
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[482] | 137 | ! |
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[800] | 138 | ! |
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[1] | 139 | ! Revision 1.1 1999/11/25 16:16:06 raasch |
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| 140 | ! Initial revision |
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| 141 | ! |
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| 142 | ! |
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| 143 | ! Description: |
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| 144 | ! ------------ |
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[1682] | 145 | !> Particle advection |
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[1] | 146 | !------------------------------------------------------------------------------! |
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[1682] | 147 | |
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[1] | 148 | |
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[1320] | 149 | USE arrays_3d, & |
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| 150 | ONLY: ql_c, ql_v, ql_vp |
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| 151 | |
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| 152 | USE control_parameters, & |
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| 153 | ONLY: cloud_droplets, dt_3d, dt_3d_reached, dt_3d_reached_l, & |
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[1359] | 154 | molecular_viscosity, simulated_time, topography |
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[1320] | 155 | |
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| 156 | USE cpulog, & |
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| 157 | ONLY: cpu_log, log_point, log_point_s |
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| 158 | |
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[1359] | 159 | USE indices, & |
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[2232] | 160 | ONLY: nxl, nxr, nys, nyn, nzb, nzb_max, nzt |
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[1359] | 161 | |
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[1320] | 162 | USE kinds |
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| 163 | |
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[1359] | 164 | USE lpm_exchange_horiz_mod, & |
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[1936] | 165 | ONLY: dealloc_particles_array, lpm_exchange_horiz, lpm_move_particle |
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[1359] | 166 | |
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[1822] | 167 | USE lpm_init_mod, & |
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| 168 | ONLY: lpm_create_particle, PHASE_RELEASE |
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| 169 | |
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[2801] | 170 | USE lpm_pack_and_sort_mod |
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[1359] | 171 | |
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[1320] | 172 | USE particle_attributes, & |
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[1936] | 173 | ONLY: collision_kernel, deleted_particles, deallocate_memory, & |
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[1359] | 174 | dt_write_particle_data, dt_prel, end_time_prel, & |
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[2263] | 175 | grid_particles, merging, number_of_particles, & |
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| 176 | number_of_particle_groups, particles, particle_groups, & |
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| 177 | prt_count, splitting, step_dealloc, time_prel, & |
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| 178 | time_write_particle_data, trlp_count_sum, trlp_count_recv_sum, & |
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| 179 | trnp_count_sum, trnp_count_recv_sum, trrp_count_sum, & |
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| 180 | trrp_count_recv_sum, trsp_count_sum, trsp_count_recv_sum, & |
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[1359] | 181 | use_sgs_for_particles, write_particle_statistics |
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[2263] | 182 | |
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[1] | 183 | USE pegrid |
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| 184 | |
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[2801] | 185 | USE pmc_particle_interface, & |
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| 186 | ONLY: pmcp_c_get_particle_from_parent, pmcp_p_fill_particle_win, & |
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| 187 | pmcp_c_send_particle_to_parent, pmcp_p_empty_particle_win, & |
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| 188 | pmcp_p_delete_particles_in_fine_grid_area |
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| 189 | |
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| 190 | USE pmc_interface, & |
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| 191 | ONLY: nested_run |
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| 192 | |
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| 193 | IMPLICIT NONE |
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| 194 | PRIVATE |
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| 195 | SAVE |
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| 196 | |
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| 197 | INTERFACE lpm |
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| 198 | MODULE PROCEDURE lpm |
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| 199 | END INTERFACE lpm |
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| 200 | |
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| 201 | PUBLIC lpm |
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| 202 | |
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| 203 | CONTAINS |
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| 204 | SUBROUTINE lpm |
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[1] | 205 | IMPLICIT NONE |
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| 206 | |
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[1682] | 207 | INTEGER(iwp) :: i !< |
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| 208 | INTEGER(iwp) :: ie !< |
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| 209 | INTEGER(iwp) :: is !< |
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| 210 | INTEGER(iwp) :: j !< |
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| 211 | INTEGER(iwp) :: je !< |
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| 212 | INTEGER(iwp) :: js !< |
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[1936] | 213 | INTEGER(iwp), SAVE :: lpm_count = 0 !< |
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[1682] | 214 | INTEGER(iwp) :: k !< |
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| 215 | INTEGER(iwp) :: ke !< |
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| 216 | INTEGER(iwp) :: ks !< |
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| 217 | INTEGER(iwp) :: m !< |
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| 218 | INTEGER(iwp), SAVE :: steps = 0 !< |
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[1] | 219 | |
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[1682] | 220 | LOGICAL :: first_loop_stride !< |
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[60] | 221 | |
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[849] | 222 | CALL cpu_log( log_point(25), 'lpm', 'start' ) |
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[824] | 223 | |
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[849] | 224 | ! |
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| 225 | !-- Write particle data at current time on file. |
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| 226 | !-- This has to be done here, before particles are further processed, |
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| 227 | !-- because they may be deleted within this timestep (in case that |
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| 228 | !-- dt_write_particle_data = dt_prel = particle_maximum_age). |
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| 229 | time_write_particle_data = time_write_particle_data + dt_3d |
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| 230 | IF ( time_write_particle_data >= dt_write_particle_data ) THEN |
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[1] | 231 | |
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[849] | 232 | CALL lpm_data_output_particles |
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[824] | 233 | ! |
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[849] | 234 | !-- The MOD function allows for changes in the output interval with restart |
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| 235 | !-- runs. |
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| 236 | time_write_particle_data = MOD( time_write_particle_data, & |
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| 237 | MAX( dt_write_particle_data, dt_3d ) ) |
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| 238 | ENDIF |
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[1] | 239 | |
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[849] | 240 | ! |
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[1822] | 241 | !-- Initialize arrays for marking those particles to be deleted after the |
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[849] | 242 | !-- (sub-) timestep |
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| 243 | deleted_particles = 0 |
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[60] | 244 | |
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[1] | 245 | ! |
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[849] | 246 | !-- Initialize variables used for accumulating the number of particles |
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| 247 | !-- exchanged between the subdomains during all sub-timesteps (if sgs |
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| 248 | !-- velocities are included). These data are output further below on the |
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| 249 | !-- particle statistics file. |
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| 250 | trlp_count_sum = 0 |
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| 251 | trlp_count_recv_sum = 0 |
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| 252 | trrp_count_sum = 0 |
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| 253 | trrp_count_recv_sum = 0 |
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| 254 | trsp_count_sum = 0 |
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| 255 | trsp_count_recv_sum = 0 |
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| 256 | trnp_count_sum = 0 |
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| 257 | trnp_count_recv_sum = 0 |
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[1] | 258 | |
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| 259 | |
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| 260 | ! |
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| 261 | !-- Calculate exponential term used in case of particle inertia for each |
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| 262 | !-- of the particle groups |
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| 263 | DO m = 1, number_of_particle_groups |
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[1359] | 264 | IF ( particle_groups(m)%density_ratio /= 0.0_wp ) THEN |
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[1] | 265 | particle_groups(m)%exp_arg = & |
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[1359] | 266 | 4.5_wp * particle_groups(m)%density_ratio * & |
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[1] | 267 | molecular_viscosity / ( particle_groups(m)%radius )**2 |
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[1359] | 268 | |
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| 269 | particle_groups(m)%exp_term = EXP( -particle_groups(m)%exp_arg * & |
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| 270 | dt_3d ) |
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[1] | 271 | ENDIF |
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| 272 | ENDDO |
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| 273 | |
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| 274 | ! |
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[1359] | 275 | !-- If necessary, release new set of particles |
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| 276 | IF ( time_prel >= dt_prel .AND. end_time_prel > simulated_time ) THEN |
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[1] | 277 | |
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[1822] | 278 | CALL lpm_create_particle(PHASE_RELEASE) |
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[1] | 279 | ! |
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[1359] | 280 | !-- The MOD function allows for changes in the output interval with |
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| 281 | !-- restart runs. |
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| 282 | time_prel = MOD( time_prel, MAX( dt_prel, dt_3d ) ) |
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[1] | 283 | |
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[1359] | 284 | ENDIF |
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[1] | 285 | ! |
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[1359] | 286 | !-- Reset summation arrays |
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| 287 | IF ( cloud_droplets) THEN |
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| 288 | ql_c = 0.0_wp |
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| 289 | ql_v = 0.0_wp |
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| 290 | ql_vp = 0.0_wp |
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[849] | 291 | ENDIF |
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[420] | 292 | |
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[1359] | 293 | first_loop_stride = .TRUE. |
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| 294 | grid_particles(:,:,:)%time_loop_done = .TRUE. |
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[1] | 295 | ! |
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[849] | 296 | !-- Timestep loop for particle advection. |
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[1] | 297 | !-- This loop has to be repeated until the advection time of every particle |
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[849] | 298 | !-- (within the total domain!) has reached the LES timestep (dt_3d). |
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| 299 | !-- In case of including the SGS velocities, the particle timestep may be |
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[1359] | 300 | !-- smaller than the LES timestep (because of the Lagrangian timescale |
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| 301 | !-- restriction) and particles may require to undergo several particle |
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| 302 | !-- timesteps, before the LES timestep is reached. Because the number of these |
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| 303 | !-- particle timesteps to be carried out is unknown at first, these steps are |
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| 304 | !-- carried out in the following infinite loop with exit condition. |
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[1] | 305 | DO |
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[849] | 306 | CALL cpu_log( log_point_s(44), 'lpm_advec', 'start' ) |
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[1359] | 307 | CALL cpu_log( log_point_s(44), 'lpm_advec', 'pause' ) |
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[1416] | 308 | |
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[1359] | 309 | ! |
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| 310 | !-- If particle advection includes SGS velocity components, calculate the |
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| 311 | !-- required SGS quantities (i.e. gradients of the TKE, as well as |
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| 312 | !-- horizontally averaged profiles of the SGS TKE and the resolved-scale |
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| 313 | !-- velocity variances) |
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[1822] | 314 | IF ( use_sgs_for_particles .AND. .NOT. cloud_droplets ) THEN |
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| 315 | CALL lpm_init_sgs_tke |
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| 316 | ENDIF |
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[1359] | 317 | |
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[2417] | 318 | ! |
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| 319 | !-- In case SGS-particle speed is considered, particles may carry out |
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| 320 | !-- several particle timesteps. In order to prevent unnecessary |
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| 321 | !-- treatment of particles that already reached the final time level, |
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| 322 | !-- particles are sorted into contiguous blocks of finished and |
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| 323 | !-- not-finished particles, in addition to their already sorting |
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| 324 | !-- according to their sub-boxes. |
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| 325 | IF ( .NOT. first_loop_stride .AND. use_sgs_for_particles ) & |
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[2606] | 326 | CALL lpm_sort_timeloop_done |
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[2417] | 327 | |
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[1359] | 328 | DO i = nxl, nxr |
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| 329 | DO j = nys, nyn |
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| 330 | DO k = nzb+1, nzt |
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| 331 | |
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| 332 | number_of_particles = prt_count(k,j,i) |
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[1] | 333 | ! |
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[1359] | 334 | !-- If grid cell gets empty, flag must be true |
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| 335 | IF ( number_of_particles <= 0 ) THEN |
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| 336 | grid_particles(k,j,i)%time_loop_done = .TRUE. |
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| 337 | CYCLE |
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| 338 | ENDIF |
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[1] | 339 | |
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[1359] | 340 | IF ( .NOT. first_loop_stride .AND. & |
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| 341 | grid_particles(k,j,i)%time_loop_done ) CYCLE |
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| 342 | |
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| 343 | particles => grid_particles(k,j,i)%particles(1:number_of_particles) |
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| 344 | |
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| 345 | particles(1:number_of_particles)%particle_mask = .TRUE. |
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[1] | 346 | ! |
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[1359] | 347 | !-- Initialize the variable storing the total time that a particle |
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| 348 | !-- has advanced within the timestep procedure |
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| 349 | IF ( first_loop_stride ) THEN |
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| 350 | particles(1:number_of_particles)%dt_sum = 0.0_wp |
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| 351 | ENDIF |
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| 352 | ! |
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| 353 | !-- Particle (droplet) growth by condensation/evaporation and |
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| 354 | !-- collision |
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| 355 | IF ( cloud_droplets .AND. first_loop_stride) THEN |
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| 356 | ! |
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| 357 | !-- Droplet growth by condensation / evaporation |
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| 358 | CALL lpm_droplet_condensation(i,j,k) |
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| 359 | ! |
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| 360 | !-- Particle growth by collision |
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| 361 | IF ( collision_kernel /= 'none' ) THEN |
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| 362 | CALL lpm_droplet_collision(i,j,k) |
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| 363 | ENDIF |
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[1] | 364 | |
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[1359] | 365 | ENDIF |
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[1] | 366 | ! |
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[1359] | 367 | !-- Initialize the switch used for the loop exit condition checked |
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| 368 | !-- at the end of this loop. If at least one particle has failed to |
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| 369 | !-- reach the LES timestep, this switch will be set false in |
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| 370 | !-- lpm_advec. |
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| 371 | dt_3d_reached_l = .TRUE. |
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[57] | 372 | |
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| 373 | ! |
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[1359] | 374 | !-- Particle advection |
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| 375 | CALL lpm_advec(i,j,k) |
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| 376 | ! |
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[1929] | 377 | !-- Particle reflection from walls. Only applied if the particles |
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| 378 | !-- are in the vertical range of the topography. (Here, some |
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| 379 | !-- optimization is still possible.) |
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| 380 | IF ( topography /= 'flat' .AND. k < nzb_max + 2 ) THEN |
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[2698] | 381 | CALL lpm_boundary_conds( 'walls', i, j, k ) |
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[1359] | 382 | ENDIF |
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| 383 | ! |
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| 384 | !-- User-defined actions after the calculation of the new particle |
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| 385 | !-- position |
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[1416] | 386 | CALL user_lpm_advec(i,j,k) |
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[1359] | 387 | ! |
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| 388 | !-- Apply boundary conditions to those particles that have crossed |
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| 389 | !-- the top or bottom boundary and delete those particles, which are |
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| 390 | !-- older than allowed |
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[2698] | 391 | CALL lpm_boundary_conds( 'bottom/top', i, j, k ) |
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[1359] | 392 | ! |
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| 393 | !--- If not all particles of the actual grid cell have reached the |
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[2417] | 394 | !-- LES timestep, this cell has to do another loop iteration. Due to |
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| 395 | !-- the fact that particles can move into neighboring grid cells, |
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| 396 | !-- these neighbor cells also have to perform another loop iteration. |
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| 397 | !-- Please note, this realization does not work properly if |
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| 398 | !-- particles move into another subdomain. |
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[1359] | 399 | IF ( .NOT. dt_3d_reached_l ) THEN |
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[2417] | 400 | ks = MAX(nzb+1,k-1) |
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| 401 | ke = MIN(nzt,k+1) |
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| 402 | js = MAX(nys,j-1) |
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| 403 | je = MIN(nyn,j+1) |
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| 404 | is = MAX(nxl,i-1) |
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| 405 | ie = MIN(nxr,i+1) |
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[1359] | 406 | grid_particles(ks:ke,js:je,is:ie)%time_loop_done = .FALSE. |
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[2417] | 407 | ELSE |
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| 408 | grid_particles(k,j,i)%time_loop_done = .TRUE. |
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[1359] | 409 | ENDIF |
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[57] | 410 | |
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[1359] | 411 | ENDDO |
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| 412 | ENDDO |
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| 413 | ENDDO |
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| 414 | |
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| 415 | steps = steps + 1 |
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| 416 | dt_3d_reached_l = ALL(grid_particles(:,:,:)%time_loop_done) |
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[57] | 417 | ! |
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[1] | 418 | !-- Find out, if all particles on every PE have completed the LES timestep |
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| 419 | !-- and set the switch corespondingly |
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| 420 | #if defined( __parallel ) |
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[622] | 421 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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[1] | 422 | CALL MPI_ALLREDUCE( dt_3d_reached_l, dt_3d_reached, 1, MPI_LOGICAL, & |
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| 423 | MPI_LAND, comm2d, ierr ) |
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| 424 | #else |
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| 425 | dt_3d_reached = dt_3d_reached_l |
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[799] | 426 | #endif |
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[1] | 427 | |
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[849] | 428 | CALL cpu_log( log_point_s(44), 'lpm_advec', 'stop' ) |
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[1] | 429 | |
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| 430 | ! |
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| 431 | !-- Increment time since last release |
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| 432 | IF ( dt_3d_reached ) time_prel = time_prel + dt_3d |
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| 433 | ! |
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[2263] | 434 | !-- Apply splitting and merging algorithm |
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| 435 | IF ( cloud_droplets ) THEN |
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| 436 | IF ( splitting ) THEN |
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| 437 | CALL lpm_splitting |
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| 438 | ENDIF |
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| 439 | IF ( merging ) THEN |
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| 440 | CALL lpm_merging |
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| 441 | ENDIF |
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| 442 | ENDIF |
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| 443 | ! |
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[1359] | 444 | !-- Move Particles local to PE to a different grid cell |
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| 445 | CALL lpm_move_particle |
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[1] | 446 | |
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| 447 | ! |
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[849] | 448 | !-- Horizontal boundary conditions including exchange between subdmains |
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| 449 | CALL lpm_exchange_horiz |
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[2801] | 450 | |
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| 451 | IF ( .NOT. dt_3d_reached .OR. .NOT. nested_run ) THEN ! IF .FALSE., lpm_sort_in_subboxes is done inside pcmp |
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[1] | 452 | ! |
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[2801] | 453 | !-- Pack particles (eliminate those marked for deletion), |
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| 454 | !-- determine new number of particles |
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| 455 | CALL lpm_sort_in_subboxes |
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[851] | 456 | ! |
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[2801] | 457 | !-- Initialize variables for the next (sub-) timestep, i.e., for marking |
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| 458 | !-- those particles to be deleted after the timestep |
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| 459 | deleted_particles = 0 |
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| 460 | ENDIF |
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[851] | 461 | |
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[1] | 462 | IF ( dt_3d_reached ) EXIT |
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| 463 | |
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[1359] | 464 | first_loop_stride = .FALSE. |
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[1] | 465 | ENDDO ! timestep loop |
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[2801] | 466 | ! |
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| 467 | !-- in case of nested runs do the transfer of particles after every full model time step |
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| 468 | IF ( nested_run ) THEN |
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| 469 | CALL particles_from_parent_to_child |
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| 470 | CALL particles_from_child_to_parent |
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| 471 | CALL pmcp_p_delete_particles_in_fine_grid_area |
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[1] | 472 | |
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[2801] | 473 | CALL lpm_sort_in_subboxes |
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| 474 | |
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| 475 | deleted_particles = 0 |
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| 476 | ENDIF |
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| 477 | |
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[1] | 478 | ! |
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[1359] | 479 | !-- Calculate the new liquid water content for each grid box |
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[1936] | 480 | IF ( cloud_droplets ) CALL lpm_calc_liquid_water_content |
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| 481 | ! |
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| 482 | !-- Deallocate unused memory |
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| 483 | IF ( deallocate_memory .AND. lpm_count == step_dealloc ) THEN |
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| 484 | CALL dealloc_particles_array |
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| 485 | lpm_count = 0 |
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| 486 | ELSEIF ( deallocate_memory ) THEN |
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| 487 | lpm_count = lpm_count + 1 |
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[116] | 488 | ENDIF |
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| 489 | |
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[1] | 490 | ! |
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[828] | 491 | !-- Set particle attributes. |
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| 492 | !-- Feature is not available if collision is activated, because the respective |
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| 493 | !-- particle attribute (class) is then used for storing the particle radius |
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| 494 | !-- class. |
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[849] | 495 | IF ( collision_kernel == 'none' ) CALL lpm_set_attributes |
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[264] | 496 | |
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| 497 | ! |
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[1] | 498 | !-- Set particle attributes defined by the user |
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[849] | 499 | CALL user_lpm_set_attributes |
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[1] | 500 | |
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| 501 | ! |
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[849] | 502 | !-- Write particle statistics (in particular the number of particles |
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| 503 | !-- exchanged between the subdomains) on file |
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| 504 | IF ( write_particle_statistics ) CALL lpm_write_exchange_statistics |
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[1] | 505 | |
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[849] | 506 | CALL cpu_log( log_point(25), 'lpm', 'stop' ) |
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[1] | 507 | |
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[849] | 508 | END SUBROUTINE lpm |
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[2801] | 509 | |
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| 510 | SUBROUTINE particles_from_parent_to_child |
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| 511 | IMPLICIT NONE |
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| 512 | |
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| 513 | CALL pmcp_c_get_particle_from_parent ! Child actions |
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| 514 | CALL pmcp_p_fill_particle_win ! Parent actions |
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| 515 | |
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| 516 | RETURN |
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| 517 | END SUBROUTINE particles_from_parent_to_child |
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| 518 | |
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| 519 | SUBROUTINE particles_from_child_to_parent |
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| 520 | IMPLICIT NONE |
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| 521 | |
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| 522 | CALL pmcp_c_send_particle_to_parent ! Child actions |
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| 523 | CALL pmcp_p_empty_particle_win ! Parent actions |
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| 524 | |
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| 525 | RETURN |
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| 526 | END SUBROUTINE particles_from_child_to_parent |
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| 527 | |
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| 528 | |
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| 529 | END MODULE lpm_mod |
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