[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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[3655] | 17 | ! Copyright 1997-2019 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 4180 2019-08-21 14:37:54Z scharf $ |
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[3761] | 27 | ! unsed variables removed |
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| 28 | ! |
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| 29 | ! 3719 2019-02-06 13:10:18Z kanani |
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[3719] | 30 | ! Moved log_points out of subroutine into time_integration for better overview. |
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| 31 | ! |
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| 32 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3241] | 33 | ! unused variable removed |
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| 34 | ! |
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[1321] | 35 | ! |
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[1] | 36 | ! Description: |
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| 37 | ! ------------ |
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[1682] | 38 | !> Generate random, normally distributed heatflux values and store them as the |
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| 39 | !> near-surface heatflux. |
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[1] | 40 | !------------------------------------------------------------------------------! |
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[2232] | 41 | SUBROUTINE disturb_heatflux( surf ) |
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[1682] | 42 | |
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[1] | 43 | |
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[1320] | 44 | USE arrays_3d, & |
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[2232] | 45 | ONLY: heatflux_input_conversion |
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[1320] | 46 | |
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| 47 | USE control_parameters, & |
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[2232] | 48 | ONLY: iran, surface_heatflux, random_generator, wall_heatflux |
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[1320] | 49 | |
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| 50 | USE kinds |
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| 51 | |
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| 52 | USE indices, & |
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[2232] | 53 | ONLY: nzb |
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[1] | 54 | |
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[2232] | 55 | USE random_generator_parallel, & |
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| 56 | ONLY: random_number_parallel, random_seed_parallel, random_dummy, & |
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[3241] | 57 | seq_random_array |
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[2232] | 58 | |
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| 59 | USE surface_mod, & |
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| 60 | ONLY: surf_type |
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| 61 | |
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[1] | 62 | IMPLICIT NONE |
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| 63 | |
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[2232] | 64 | INTEGER(iwp) :: i !< grid index, x direction |
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| 65 | INTEGER(iwp) :: j !< grid index, y direction |
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| 66 | INTEGER(iwp) :: k !< grid index, z direction |
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| 67 | INTEGER(iwp) :: m !< loop variables over surface elements |
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[1320] | 68 | |
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[1682] | 69 | REAL(wp) :: random_gauss !< |
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| 70 | REAL(wp) :: randomnumber !< |
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[1] | 71 | |
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[2232] | 72 | TYPE(surf_type) :: surf !< surface-type variable |
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[1] | 73 | |
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[2232] | 74 | |
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[1] | 75 | ! |
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[2232] | 76 | !-- Generate random disturbances and store them. Note, if |
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| 77 | !-- random_generator /= 'random-parallel' it is not guaranteed to obtain |
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| 78 | !-- the same random distribution if the number of processors is changed. |
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| 79 | IF ( random_generator /= 'random-parallel' ) THEN |
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| 80 | |
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| 81 | DO m = 1, surf%ns |
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| 82 | |
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| 83 | k = surf%k(m) |
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| 84 | |
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| 85 | randomnumber = random_gauss( iran, 5.0_wp ) |
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[1] | 86 | ! |
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[2232] | 87 | !-- k-1 is topography top index. If this is 0, set surface heatflux. Over |
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| 88 | !-- topography surface_heatflux is replaced by wall_heatflux(0). |
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| 89 | IF ( k-1 == 0 ) THEN |
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| 90 | surf%shf(m) = randomnumber * surface_heatflux & |
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| 91 | * heatflux_input_conversion(nzb) |
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| 92 | ELSE |
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| 93 | surf%shf(m) = randomnumber * wall_heatflux(0) & |
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| 94 | * heatflux_input_conversion(k-1) |
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[1] | 95 | ENDIF |
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| 96 | ENDDO |
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[2232] | 97 | ELSE |
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[1] | 98 | |
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[2232] | 99 | DO m = 1, surf%ns |
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| 100 | |
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| 101 | i = surf%i(m) |
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| 102 | j = surf%j(m) |
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| 103 | k = surf%k(m) |
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| 104 | |
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| 105 | CALL random_seed_parallel( put=seq_random_array(:, j, i) ) |
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| 106 | CALL random_number_parallel( random_dummy ) |
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[1] | 107 | ! |
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[2232] | 108 | !-- k-1 is topography top index. If this is 0, set surface heatflux. Over |
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| 109 | !-- topography surface_heatflux is replaced by wall_heatflux(0). |
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| 110 | IF ( k-1 == 0 ) THEN |
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| 111 | surf%shf(m) = ( random_dummy - 0.5_wp ) * surface_heatflux & |
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| 112 | * heatflux_input_conversion(nzb) |
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| 113 | ELSE |
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| 114 | surf%shf(m) = ( random_dummy - 0.5_wp ) * wall_heatflux(0) & |
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| 115 | * heatflux_input_conversion(k-1) |
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| 116 | ENDIF |
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[1] | 117 | |
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[2232] | 118 | CALL random_seed_parallel( get=seq_random_array(:, j, i) ) |
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| 119 | |
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| 120 | ENDDO |
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| 121 | |
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| 122 | ENDIF |
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| 123 | |
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[1] | 124 | |
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| 125 | END SUBROUTINE disturb_heatflux |
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