| 1 | !> @file advec_u_up.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of the PALM model system. |
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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 1997-2020 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: advec_u_up.f90 4360 2020-01-07 11:25:50Z scharf $ |
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| 27 | ! Corrected "Former revisions" section |
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| 28 | ! |
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| 29 | ! 3655 2019-01-07 16:51:22Z knoop |
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| 30 | ! variables documented |
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| 31 | ! |
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| 32 | ! Revision 1.1 1997/08/29 08:55:25 raasch |
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| 33 | ! Initial revision |
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| 34 | ! |
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| 35 | ! |
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| 36 | ! Description: |
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| 37 | ! ------------ |
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| 38 | !> Advection term for the u velocity-component using upstream scheme. |
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| 39 | !> NOTE: vertical advection at k=1 still has wrong grid spacing for w>0! |
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| 40 | !> The same problem occurs for all topography boundaries! |
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| 41 | !------------------------------------------------------------------------------! |
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| 42 | MODULE advec_u_up_mod |
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| 43 | |
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| 44 | |
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| 45 | PRIVATE |
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| 46 | PUBLIC advec_u_up |
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| 47 | |
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| 48 | INTERFACE advec_u_up |
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| 49 | MODULE PROCEDURE advec_u_up |
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| 50 | MODULE PROCEDURE advec_u_up_ij |
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| 51 | END INTERFACE advec_u_up |
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| 52 | |
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| 53 | CONTAINS |
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| 54 | |
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| 55 | |
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| 56 | !------------------------------------------------------------------------------! |
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| 57 | ! Description: |
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| 58 | ! ------------ |
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| 59 | !> Call for all grid points |
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| 60 | !------------------------------------------------------------------------------! |
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| 61 | SUBROUTINE advec_u_up |
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| 62 | |
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| 63 | USE arrays_3d, & |
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| 64 | ONLY: ddzu, tend, u, v, w |
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| 65 | |
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| 66 | USE control_parameters, & |
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| 67 | ONLY: u_gtrans, v_gtrans |
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| 68 | |
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| 69 | USE grid_variables, & |
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| 70 | ONLY: ddx, ddy |
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| 71 | |
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| 72 | USE indices, & |
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| 73 | ONLY: nxlu, nxr, nyn, nys, nzb, nzt |
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| 74 | |
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| 75 | USE kinds |
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| 76 | |
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| 77 | |
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| 78 | IMPLICIT NONE |
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| 79 | |
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| 80 | INTEGER(iwp) :: i !< grid index along x-direction |
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| 81 | INTEGER(iwp) :: j !< grid index along y-direction |
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| 82 | INTEGER(iwp) :: k !< grid index along z-direction |
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| 83 | |
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| 84 | REAL(wp) :: ukomp !< advection velocity along x-direction |
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| 85 | REAL(wp) :: vkomp !< advection velocity along y-direction |
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| 86 | REAL(wp) :: wkomp !< advection velocity along z-direction |
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| 87 | |
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| 88 | |
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| 89 | DO i = nxlu, nxr |
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| 90 | DO j = nys, nyn |
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| 91 | DO k = nzb+1, nzt |
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| 92 | ! |
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| 93 | !-- x-direction |
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| 94 | ukomp = u(k,j,i) - u_gtrans |
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| 95 | IF ( ukomp > 0.0_wp ) THEN |
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| 96 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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| 97 | ( u(k,j,i) - u(k,j,i-1) ) * ddx |
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| 98 | ELSE |
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| 99 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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| 100 | ( u(k,j,i+1) - u(k,j,i) ) * ddx |
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| 101 | ENDIF |
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| 102 | ! |
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| 103 | !-- y-direction |
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| 104 | vkomp = 0.25_wp * ( v(k,j,i) + v(k,j+1,i) + & |
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| 105 | v(k,j,i-1) + v(k,j+1,i-1) ) - v_gtrans |
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| 106 | IF ( vkomp > 0.0_wp ) THEN |
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| 107 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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| 108 | ( u(k,j,i) - u(k,j-1,i) ) * ddy |
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| 109 | ELSE |
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| 110 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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| 111 | ( u(k,j+1,i) - u(k,j,i) ) * ddy |
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| 112 | ENDIF |
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| 113 | ! |
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| 114 | !-- z-direction |
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| 115 | wkomp = 0.25_wp * ( w(k,j,i) + w(k-1,j,i) + & |
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| 116 | w(k,j,i-1) + w(k-1,j,i-1) ) |
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| 117 | IF ( wkomp > 0.0_wp ) THEN |
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| 118 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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| 119 | ( u(k,j,i) - u(k-1,j,i) ) * ddzu(k) |
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| 120 | ELSE |
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| 121 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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| 122 | ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) |
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| 123 | ENDIF |
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| 124 | |
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| 125 | ENDDO |
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| 126 | ENDDO |
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| 127 | ENDDO |
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| 128 | |
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| 129 | END SUBROUTINE advec_u_up |
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| 130 | |
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| 131 | |
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| 132 | !------------------------------------------------------------------------------! |
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| 133 | ! Description: |
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| 134 | ! ------------ |
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| 135 | !> Call for grid point i,j |
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| 136 | !------------------------------------------------------------------------------! |
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| 137 | SUBROUTINE advec_u_up_ij( i, j ) |
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| 138 | |
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| 139 | USE arrays_3d, & |
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| 140 | ONLY: ddzu, tend, u, v, w |
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| 141 | |
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| 142 | USE control_parameters, & |
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| 143 | ONLY: u_gtrans, v_gtrans |
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| 144 | |
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| 145 | USE grid_variables, & |
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| 146 | ONLY: ddx, ddy |
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| 147 | |
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| 148 | USE indices, & |
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| 149 | ONLY: nzb, nzt |
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| 150 | |
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| 151 | USE kinds |
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| 152 | |
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| 153 | |
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| 154 | IMPLICIT NONE |
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| 155 | |
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| 156 | INTEGER(iwp) :: i !< grid index along x-direction |
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| 157 | INTEGER(iwp) :: j !< grid index along y-direction |
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| 158 | INTEGER(iwp) :: k !< grid index along z-direction |
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| 159 | |
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| 160 | REAL(wp) :: ukomp !< advection velocity along x-direction |
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| 161 | REAL(wp) :: vkomp !< advection velocity along y-direction |
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| 162 | REAL(wp) :: wkomp !< advection velocity along z-direction |
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| 163 | |
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| 164 | |
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| 165 | DO k = nzb+1, nzt |
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| 166 | ! |
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| 167 | !-- x-direction |
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| 168 | ukomp = u(k,j,i) - u_gtrans |
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| 169 | IF ( ukomp > 0.0_wp ) THEN |
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| 170 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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| 171 | ( u(k,j,i) - u(k,j,i-1) ) * ddx |
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| 172 | ELSE |
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| 173 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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| 174 | ( u(k,j,i+1) - u(k,j,i) ) * ddx |
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| 175 | ENDIF |
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| 176 | ! |
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| 177 | !-- y-direction |
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| 178 | vkomp = 0.25_wp * ( v(k,j,i) + v(k,j+1,i) + v(k,j,i-1) + v(k,j+1,i-1) & |
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| 179 | ) - v_gtrans |
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| 180 | IF ( vkomp > 0.0_wp ) THEN |
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| 181 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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| 182 | ( u(k,j,i) - u(k,j-1,i) ) * ddy |
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| 183 | ELSE |
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| 184 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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| 185 | ( u(k,j+1,i) - u(k,j,i) ) * ddy |
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| 186 | ENDIF |
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| 187 | ! |
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| 188 | !-- z-direction |
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| 189 | wkomp = 0.25_wp * ( w(k,j,i) + w(k-1,j,i) + w(k,j,i-1) + w(k-1,j,i-1) ) |
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| 190 | IF ( wkomp > 0.0_wp ) THEN |
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| 191 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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| 192 | ( u(k,j,i) - u(k-1,j,i) ) * ddzu(k) |
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| 193 | ELSE |
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| 194 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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| 195 | ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) |
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| 196 | ENDIF |
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| 197 | |
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| 198 | ENDDO |
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| 199 | |
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| 200 | END SUBROUTINE advec_u_up_ij |
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| 201 | |
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| 202 | END MODULE advec_u_up_mod |
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