| 1 | !> @file diffusion_w.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of PALM. |
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| 4 | ! |
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| 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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| 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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| 17 | ! Copyright 1997-2017 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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| 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: diffusion_w.f90 2119 2017-01-17 16:51:50Z raasch $ |
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| 27 | ! |
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| 28 | ! 2118 2017-01-17 16:38:49Z raasch |
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| 29 | ! OpenACC version of subroutine removed |
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| 30 | ! |
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| 31 | ! 2037 2016-10-26 11:15:40Z knoop |
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| 32 | ! Anelastic approximation implemented |
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| 33 | ! |
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| 34 | ! 2000 2016-08-20 18:09:15Z knoop |
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| 35 | ! Forced header and separation lines into 80 columns |
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| 36 | ! |
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| 37 | ! 1873 2016-04-18 14:50:06Z maronga |
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| 38 | ! Module renamed (removed _mod) |
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| 39 | ! |
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| 40 | ! 1850 2016-04-08 13:29:27Z maronga |
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| 41 | ! Module renamed |
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| 42 | ! |
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| 43 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 44 | ! Code annotations made doxygen readable |
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| 45 | ! |
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| 46 | ! 1374 2014-04-25 12:55:07Z raasch |
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| 47 | ! vsws + vswst removed from acc-present-list |
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| 48 | ! |
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| 49 | ! 1353 2014-04-08 15:21:23Z heinze |
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| 50 | ! REAL constants provided with KIND-attribute |
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| 51 | ! |
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| 52 | ! 1340 2014-03-25 19:45:13Z kanani |
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| 53 | ! REAL constants defined as wp-kind |
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| 54 | ! |
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| 55 | ! 1322 2014-03-20 16:38:49Z raasch |
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| 56 | ! REAL constants defined as wp-kind |
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| 57 | ! |
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| 58 | ! 1320 2014-03-20 08:40:49Z raasch |
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| 59 | ! ONLY-attribute added to USE-statements, |
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| 60 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 61 | ! kinds are defined in new module kinds, |
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| 62 | ! revision history before 2012 removed, |
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| 63 | ! comment fields (!:) to be used for variable explanations added to |
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| 64 | ! all variable declaration statements |
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| 65 | ! |
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| 66 | ! 1257 2013-11-08 15:18:40Z raasch |
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| 67 | ! openacc loop and loop vector clauses removed, declare create moved after |
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| 68 | ! the FORTRAN declaration statement |
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| 69 | ! |
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| 70 | ! 1128 2013-04-12 06:19:32Z raasch |
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| 71 | ! loop index bounds in accelerator version replaced by i_left, i_right, j_south, |
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| 72 | ! j_north |
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| 73 | ! |
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| 74 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 75 | ! code put under GPL (PALM 3.9) |
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| 76 | ! |
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| 77 | ! 1015 2012-09-27 09:23:24Z raasch |
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| 78 | ! accelerator version (*_acc) added |
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| 79 | ! |
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| 80 | ! 1001 2012-09-13 14:08:46Z raasch |
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| 81 | ! arrays comunicated by module instead of parameter list |
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| 82 | ! |
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| 83 | ! 978 2012-08-09 08:28:32Z fricke |
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| 84 | ! outflow damping layer removed |
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| 85 | ! kmxm_x/_z and kmxp_x/_z change to kmxm and kmxp |
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| 86 | ! kmym_y/_z and kmyp_y/_z change to kmym and kmyp |
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| 87 | ! |
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| 88 | ! Revision 1.1 1997/09/12 06:24:11 raasch |
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| 89 | ! Initial revision |
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| 90 | ! |
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| 91 | ! |
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| 92 | ! Description: |
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| 93 | ! ------------ |
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| 94 | !> Diffusion term of the w-component |
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| 95 | !------------------------------------------------------------------------------! |
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| 96 | MODULE diffusion_w_mod |
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| 97 | |
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| 98 | |
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| 99 | USE wall_fluxes_mod, & |
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| 100 | ONLY : wall_fluxes |
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| 101 | |
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| 102 | PRIVATE |
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| 103 | PUBLIC diffusion_w |
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| 104 | |
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| 105 | INTERFACE diffusion_w |
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| 106 | MODULE PROCEDURE diffusion_w |
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| 107 | MODULE PROCEDURE diffusion_w_ij |
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| 108 | END INTERFACE diffusion_w |
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| 109 | |
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| 110 | CONTAINS |
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| 111 | |
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| 112 | |
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| 113 | !------------------------------------------------------------------------------! |
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| 114 | ! Description: |
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| 115 | ! ------------ |
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| 116 | !> Call for all grid points |
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| 117 | !------------------------------------------------------------------------------! |
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| 118 | SUBROUTINE diffusion_w |
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| 119 | |
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| 120 | USE arrays_3d, & |
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| 121 | ONLY : ddzu, ddzw, km, tend, u, v, w, drho_air_zw, rho_air |
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| 122 | |
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| 123 | USE control_parameters, & |
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| 124 | ONLY : topography |
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| 125 | |
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| 126 | USE grid_variables, & |
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| 127 | ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y |
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| 128 | |
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| 129 | USE indices, & |
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| 130 | ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt |
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| 131 | |
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| 132 | USE kinds |
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| 133 | |
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| 134 | IMPLICIT NONE |
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| 135 | |
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| 136 | INTEGER(iwp) :: i !< |
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| 137 | INTEGER(iwp) :: j !< |
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| 138 | INTEGER(iwp) :: k !< |
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| 139 | |
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| 140 | REAL(wp) :: kmxm !< |
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| 141 | REAL(wp) :: kmxp !< |
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| 142 | REAL(wp) :: kmym !< |
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| 143 | REAL(wp) :: kmyp !< |
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| 144 | |
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| 145 | REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !< |
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| 146 | REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !< |
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| 147 | |
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| 148 | |
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| 149 | ! |
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| 150 | !-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical |
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| 151 | !-- walls, if neccessary |
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| 152 | IF ( topography /= 'flat' ) THEN |
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| 153 | CALL wall_fluxes( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, nzb_w_inner, & |
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| 154 | nzb_w_outer, wall_w_x ) |
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| 155 | CALL wall_fluxes( wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp, nzb_w_inner, & |
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| 156 | nzb_w_outer, wall_w_y ) |
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| 157 | ENDIF |
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| 158 | |
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| 159 | DO i = nxl, nxr |
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| 160 | DO j = nys, nyn |
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| 161 | DO k = nzb_w_outer(j,i)+1, nzt-1 |
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| 162 | ! |
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| 163 | !-- Interpolate eddy diffusivities on staggered gridpoints |
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| 164 | kmxp = 0.25_wp * & |
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| 165 | ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) ) |
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| 166 | kmxm = 0.25_wp * & |
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| 167 | ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) ) |
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| 168 | kmyp = 0.25_wp * & |
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| 169 | ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) ) |
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| 170 | kmym = 0.25_wp * & |
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| 171 | ( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) ) |
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| 172 | |
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| 173 | tend(k,j,i) = tend(k,j,i) & |
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| 174 | & + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx & |
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| 175 | & + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) & |
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| 176 | & - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx & |
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| 177 | & - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) & |
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| 178 | & ) * ddx & |
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| 179 | & + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy & |
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| 180 | & + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) & |
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| 181 | & - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy & |
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| 182 | & - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) & |
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| 183 | & ) * ddy & |
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| 184 | & + 2.0_wp * ( & |
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| 185 | & km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) & |
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| 186 | & * rho_air(k+1) & |
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| 187 | & - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) & |
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| 188 | & * rho_air(k) & |
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| 189 | & ) * ddzu(k+1) * drho_air_zw(k) |
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| 190 | ENDDO |
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| 191 | |
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| 192 | ! |
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| 193 | !-- Wall functions at all vertical walls, where necessary |
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| 194 | IF ( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) THEN |
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| 195 | |
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| 196 | DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i) |
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| 197 | ! |
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| 198 | !-- Interpolate eddy diffusivities on staggered gridpoints |
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| 199 | kmxp = 0.25_wp * & |
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| 200 | ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) ) |
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| 201 | kmxm = 0.25_wp * & |
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| 202 | ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) ) |
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| 203 | kmyp = 0.25_wp * & |
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| 204 | ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) ) |
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| 205 | kmym = 0.25_wp * & |
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| 206 | ( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) ) |
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| 207 | |
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| 208 | tend(k,j,i) = tend(k,j,i) & |
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| 209 | + ( fwxp(j,i) * ( & |
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| 210 | kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx & |
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| 211 | + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) & |
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| 212 | ) & |
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| 213 | - fwxm(j,i) * ( & |
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| 214 | kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx & |
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| 215 | + kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) & |
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| 216 | ) & |
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| 217 | + wall_w_x(j,i) * wsus(k,j,i) & |
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| 218 | ) * ddx & |
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| 219 | + ( fwyp(j,i) * ( & |
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| 220 | kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy & |
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| 221 | + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) & |
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| 222 | ) & |
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| 223 | - fwym(j,i) * ( & |
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| 224 | kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy & |
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| 225 | + kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) & |
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| 226 | ) & |
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| 227 | + wall_w_y(j,i) * wsvs(k,j,i) & |
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| 228 | ) * ddy & |
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| 229 | + 2.0_wp * ( & |
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| 230 | km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) & |
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| 231 | * rho_air(k+1) & |
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| 232 | - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) & |
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| 233 | * rho_air(k) & |
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| 234 | ) * ddzu(k+1) * drho_air_zw(k) |
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| 235 | ENDDO |
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| 236 | ENDIF |
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| 237 | |
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| 238 | ENDDO |
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| 239 | ENDDO |
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| 240 | |
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| 241 | END SUBROUTINE diffusion_w |
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| 242 | |
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| 243 | |
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| 244 | !------------------------------------------------------------------------------! |
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| 245 | ! Description: |
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| 246 | ! ------------ |
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| 247 | !> Call for grid point i,j |
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| 248 | !------------------------------------------------------------------------------! |
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| 249 | SUBROUTINE diffusion_w_ij( i, j ) |
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| 250 | |
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| 251 | USE arrays_3d, & |
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| 252 | ONLY : ddzu, ddzw, km, tend, u, v, w, drho_air_zw, rho_air |
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| 253 | |
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| 254 | USE control_parameters, & |
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| 255 | ONLY : topography |
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| 256 | |
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| 257 | USE grid_variables, & |
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| 258 | ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y |
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| 259 | |
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| 260 | USE indices, & |
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| 261 | ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt |
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| 262 | |
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| 263 | USE kinds |
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| 264 | |
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| 265 | IMPLICIT NONE |
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| 266 | |
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| 267 | INTEGER(iwp) :: i !< |
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| 268 | INTEGER(iwp) :: j !< |
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| 269 | INTEGER(iwp) :: k !< |
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| 270 | |
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| 271 | REAL(wp) :: kmxm !< |
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| 272 | REAL(wp) :: kmxp !< |
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| 273 | REAL(wp) :: kmym !< |
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| 274 | REAL(wp) :: kmyp !< |
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| 275 | |
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| 276 | REAL(wp), DIMENSION(nzb:nzt+1) :: wsus |
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| 277 | REAL(wp), DIMENSION(nzb:nzt+1) :: wsvs |
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| 278 | |
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| 279 | |
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| 280 | DO k = nzb_w_outer(j,i)+1, nzt-1 |
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| 281 | ! |
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| 282 | !-- Interpolate eddy diffusivities on staggered gridpoints |
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| 283 | kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) ) |
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| 284 | kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) ) |
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| 285 | kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) ) |
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| 286 | kmym = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) ) |
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| 287 | |
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| 288 | tend(k,j,i) = tend(k,j,i) & |
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| 289 | & + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx & |
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| 290 | & + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) & |
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| 291 | & - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx & |
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| 292 | & - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) & |
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| 293 | & ) * ddx & |
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| 294 | & + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy & |
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| 295 | & + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) & |
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| 296 | & - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy & |
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| 297 | & - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) & |
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| 298 | & ) * ddy & |
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| 299 | & + 2.0_wp * ( & |
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| 300 | & km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) & |
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| 301 | & * rho_air(k+1) & |
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| 302 | & - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) & |
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| 303 | & * rho_air(k) & |
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| 304 | & ) * ddzu(k+1) * drho_air_zw(k) |
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| 305 | ENDDO |
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| 306 | |
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| 307 | ! |
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| 308 | !-- Wall functions at all vertical walls, where necessary |
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| 309 | IF ( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) THEN |
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| 310 | |
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| 311 | ! |
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| 312 | !-- Calculate the horizontal momentum fluxes w'u' and/or w'v' |
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| 313 | IF ( wall_w_x(j,i) /= 0.0_wp ) THEN |
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| 314 | CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), & |
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| 315 | wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp ) |
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| 316 | ELSE |
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| 317 | wsus = 0.0_wp |
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| 318 | ENDIF |
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| 319 | |
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| 320 | IF ( wall_w_y(j,i) /= 0.0_wp ) THEN |
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| 321 | CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), & |
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| 322 | wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp ) |
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| 323 | ELSE |
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| 324 | wsvs = 0.0_wp |
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| 325 | ENDIF |
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| 326 | |
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| 327 | DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i) |
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| 328 | ! |
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| 329 | !-- Interpolate eddy diffusivities on staggered gridpoints |
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| 330 | kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) ) |
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| 331 | kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) ) |
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| 332 | kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) ) |
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| 333 | kmym = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) ) |
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| 334 | |
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| 335 | tend(k,j,i) = tend(k,j,i) & |
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| 336 | + ( fwxp(j,i) * ( & |
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| 337 | kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx & |
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| 338 | + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) & |
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| 339 | ) & |
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| 340 | - fwxm(j,i) * ( & |
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| 341 | kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx & |
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| 342 | + kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) & |
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| 343 | ) & |
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| 344 | + wall_w_x(j,i) * wsus(k) & |
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| 345 | ) * ddx & |
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| 346 | + ( fwyp(j,i) * ( & |
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| 347 | kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy & |
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| 348 | + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) & |
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| 349 | ) & |
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| 350 | - fwym(j,i) * ( & |
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| 351 | kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy & |
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| 352 | + kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) & |
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| 353 | ) & |
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| 354 | + wall_w_y(j,i) * wsvs(k) & |
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| 355 | ) * ddy & |
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| 356 | + 2.0_wp * ( & |
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| 357 | km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) & |
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| 358 | * rho_air(k+1) & |
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| 359 | - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) & |
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| 360 | * rho_air(k) & |
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| 361 | ) * ddzu(k+1) * drho_air_zw(k) |
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| 362 | ENDDO |
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| 363 | ENDIF |
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| 364 | |
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| 365 | END SUBROUTINE diffusion_w_ij |
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| 366 | |
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| 367 | END MODULE diffusion_w_mod |
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