[1682] | 1 | !> @file disturb_heatflux.f90 |
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[2000] | 2 | !------------------------------------------------------------------------------! |
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[2696] | 3 | ! This file is part of the PALM model system. |
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[1036] | 4 | ! |
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[2000] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 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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[1036] | 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 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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[4828] | 17 | ! Copyright 1997-2021 Leibniz Universitaet Hannover |
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[1320] | 18 | !------------------------------------------------------------------------------! |
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[1036] | 19 | ! |
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[484] | 20 | ! Current revisions: |
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[1322] | 21 | ! ------------------ |
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[1354] | 22 | ! |
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[2233] | 23 | ! |
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[1321] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: disturb_heatflux.f90 4828 2021-01-05 11:21:41Z banzhafs $ |
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[4182] | 27 | ! Corrected "Former revisions" section |
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| 28 | ! |
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| 29 | ! 3761 2019-02-25 15:31:42Z raasch |
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[3761] | 30 | ! unsed variables removed |
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| 31 | ! |
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| 32 | ! 3719 2019-02-06 13:10:18Z kanani |
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[3719] | 33 | ! Moved log_points out of subroutine into time_integration for better overview. |
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| 34 | ! |
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| 35 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3241] | 36 | ! unused variable removed |
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[1321] | 37 | ! |
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[4182] | 38 | ! Revision 1.1 1998/03/25 20:03:47 raasch |
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| 39 | ! Initial revision |
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| 40 | ! |
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| 41 | ! |
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[1] | 42 | ! Description: |
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| 43 | ! ------------ |
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[1682] | 44 | !> Generate random, normally distributed heatflux values and store them as the |
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| 45 | !> near-surface heatflux. |
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[1] | 46 | !------------------------------------------------------------------------------! |
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[2232] | 47 | SUBROUTINE disturb_heatflux( surf ) |
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[1682] | 48 | |
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[1] | 49 | |
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[1320] | 50 | USE arrays_3d, & |
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[2232] | 51 | ONLY: heatflux_input_conversion |
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[1320] | 52 | |
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| 53 | USE control_parameters, & |
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[2232] | 54 | ONLY: iran, surface_heatflux, random_generator, wall_heatflux |
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[1320] | 55 | |
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| 56 | USE kinds |
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| 57 | |
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| 58 | USE indices, & |
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[2232] | 59 | ONLY: nzb |
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[1] | 60 | |
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[2232] | 61 | USE random_generator_parallel, & |
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| 62 | ONLY: random_number_parallel, random_seed_parallel, random_dummy, & |
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[3241] | 63 | seq_random_array |
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[2232] | 64 | |
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| 65 | USE surface_mod, & |
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| 66 | ONLY: surf_type |
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| 67 | |
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[1] | 68 | IMPLICIT NONE |
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| 69 | |
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[2232] | 70 | INTEGER(iwp) :: i !< grid index, x direction |
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| 71 | INTEGER(iwp) :: j !< grid index, y direction |
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| 72 | INTEGER(iwp) :: k !< grid index, z direction |
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| 73 | INTEGER(iwp) :: m !< loop variables over surface elements |
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[1320] | 74 | |
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[1682] | 75 | REAL(wp) :: random_gauss !< |
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| 76 | REAL(wp) :: randomnumber !< |
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[1] | 77 | |
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[2232] | 78 | TYPE(surf_type) :: surf !< surface-type variable |
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[1] | 79 | |
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[2232] | 80 | |
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[1] | 81 | ! |
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[2232] | 82 | !-- Generate random disturbances and store them. Note, if |
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| 83 | !-- random_generator /= 'random-parallel' it is not guaranteed to obtain |
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| 84 | !-- the same random distribution if the number of processors is changed. |
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| 85 | IF ( random_generator /= 'random-parallel' ) THEN |
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| 86 | |
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| 87 | DO m = 1, surf%ns |
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| 88 | |
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| 89 | k = surf%k(m) |
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| 90 | |
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| 91 | randomnumber = random_gauss( iran, 5.0_wp ) |
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[1] | 92 | ! |
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[2232] | 93 | !-- k-1 is topography top index. If this is 0, set surface heatflux. Over |
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| 94 | !-- topography surface_heatflux is replaced by wall_heatflux(0). |
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| 95 | IF ( k-1 == 0 ) THEN |
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| 96 | surf%shf(m) = randomnumber * surface_heatflux & |
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| 97 | * heatflux_input_conversion(nzb) |
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| 98 | ELSE |
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| 99 | surf%shf(m) = randomnumber * wall_heatflux(0) & |
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| 100 | * heatflux_input_conversion(k-1) |
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[1] | 101 | ENDIF |
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| 102 | ENDDO |
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[2232] | 103 | ELSE |
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[1] | 104 | |
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[2232] | 105 | DO m = 1, surf%ns |
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| 106 | |
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| 107 | i = surf%i(m) |
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| 108 | j = surf%j(m) |
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| 109 | k = surf%k(m) |
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| 110 | |
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| 111 | CALL random_seed_parallel( put=seq_random_array(:, j, i) ) |
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| 112 | CALL random_number_parallel( random_dummy ) |
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[1] | 113 | ! |
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[2232] | 114 | !-- k-1 is topography top index. If this is 0, set surface heatflux. Over |
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| 115 | !-- topography surface_heatflux is replaced by wall_heatflux(0). |
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| 116 | IF ( k-1 == 0 ) THEN |
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| 117 | surf%shf(m) = ( random_dummy - 0.5_wp ) * surface_heatflux & |
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| 118 | * heatflux_input_conversion(nzb) |
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| 119 | ELSE |
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| 120 | surf%shf(m) = ( random_dummy - 0.5_wp ) * wall_heatflux(0) & |
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| 121 | * heatflux_input_conversion(k-1) |
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| 122 | ENDIF |
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[1] | 123 | |
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[2232] | 124 | CALL random_seed_parallel( get=seq_random_array(:, j, i) ) |
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| 125 | |
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| 126 | ENDDO |
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| 127 | |
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| 128 | ENDIF |
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| 129 | |
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[1] | 130 | |
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| 131 | END SUBROUTINE disturb_heatflux |
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