1 | !> @file advec_w_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 terms of the GNU General |
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6 | ! Public License as published by the Free Software Foundation, either version 3 of the License, or |
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7 | ! (at your option) any later version. |
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8 | ! |
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9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the |
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10 | ! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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11 | ! Public License for more details. |
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12 | ! |
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13 | ! You should have received a copy of the GNU General Public License along with PALM. If not, see |
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14 | ! <http://www.gnu.org/licenses/>. |
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15 | ! |
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16 | ! Copyright 1997-2020 Leibniz Universitaet Hannover |
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17 | !--------------------------------------------------------------------------------------------------! |
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18 | ! |
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19 | ! Current revisions: |
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20 | ! ----------------- |
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21 | ! |
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22 | ! |
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23 | ! Former revisions: |
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24 | ! ----------------- |
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25 | ! $Id: advec_w_up.f90 4509 2020-04-26 15:57:55Z suehring $ |
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26 | ! file re-formatted to follow the PALM coding standard |
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27 | ! |
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28 | ! 4360 2020-01-07 11:25:50Z suehring |
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29 | ! Corrected "Former revisions" section |
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30 | ! |
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31 | ! 3655 2019-01-07 16:51:22Z knoop |
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32 | ! variables documented |
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33 | ! |
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34 | ! Revision 1.1 1997/08/29 08:56:33 raasch |
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35 | ! Initial revision |
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36 | ! |
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37 | ! |
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38 | ! Description: |
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39 | ! ------------ |
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40 | !> Advection term for the w velocity-component using upstream scheme. |
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41 | !> NOTE: vertical advection at k=1 still has wrong grid spacing for w>0 |
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42 | !> The same problem occurs for all topography boundaries! |
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43 | !--------------------------------------------------------------------------------------------------! |
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44 | MODULE advec_w_up_mod |
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45 | |
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46 | |
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47 | PRIVATE |
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48 | PUBLIC advec_w_up |
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49 | |
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50 | INTERFACE advec_w_up |
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51 | MODULE PROCEDURE advec_w_up |
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52 | MODULE PROCEDURE advec_w_up_ij |
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53 | END INTERFACE advec_w_up |
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54 | |
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55 | CONTAINS |
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56 | |
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57 | |
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58 | !--------------------------------------------------------------------------------------------------! |
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59 | ! Description: |
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60 | ! ------------ |
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61 | !> Call for all grid points |
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62 | !--------------------------------------------------------------------------------------------------! |
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63 | SUBROUTINE advec_w_up |
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64 | |
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65 | USE arrays_3d, & |
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66 | ONLY: ddzw, tend, u, v, w |
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67 | |
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68 | USE control_parameters, & |
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69 | ONLY: u_gtrans, v_gtrans |
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70 | |
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71 | USE grid_variables, & |
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72 | ONLY: ddx, ddy |
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73 | |
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74 | USE indices, & |
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75 | ONLY: nxl, nxr, nyn, nys, nzb, nzt |
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76 | |
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77 | USE kinds |
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78 | |
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79 | |
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80 | IMPLICIT NONE |
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81 | |
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82 | INTEGER(iwp) :: i !< grid index along x-direction |
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83 | INTEGER(iwp) :: j !< grid index along y-direction |
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84 | INTEGER(iwp) :: k !< grid index along z-direction |
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85 | |
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86 | REAL(wp) :: ukomp !< advection velocity along x-direction |
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87 | REAL(wp) :: vkomp !< advection velocity along y-direction |
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88 | |
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89 | |
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90 | DO i = nxl, nxr |
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91 | DO j = nys, nyn |
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92 | DO k = nzb+1, nzt-1 |
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93 | ! |
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94 | !-- x-direction |
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95 | ukomp = 0.25_wp * ( u(k,j,i) + u(k,j,i+1) + u(k+1,j,i) + u(k+1,j,i+1) ) - u_gtrans |
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96 | IF ( ukomp > 0.0_wp ) THEN |
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97 | tend(k,j,i) = tend(k,j,i) - ukomp * ( w(k,j,i) - w(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 * ( w(k,j,i+1) - w(k,j,i) ) * ddx |
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100 | ENDIF |
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101 | ! |
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102 | !-- y-direction |
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103 | vkomp = 0.25_wp * ( v(k,j,i) + v(k,j+1,i) + v(k+1,j,i) + v(k+1,j+1,i) ) - v_gtrans |
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104 | IF ( vkomp > 0.0_wp ) THEN |
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105 | tend(k,j,i) = tend(k,j,i) - vkomp * ( w(k,j,i) - w(k,j-1,i) ) * ddy |
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106 | ELSE |
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107 | tend(k,j,i) = tend(k,j,i) - vkomp * ( w(k,j+1,i) - w(k,j,i) ) * ddy |
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108 | ENDIF |
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109 | ! |
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110 | !-- z-direction |
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111 | IF ( w(k,j,i) > 0.0_wp ) THEN |
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112 | tend(k,j,i) = tend(k,j,i) - w(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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113 | ELSE |
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114 | tend(k,j,i) = tend(k,j,i) - w(k,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) |
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115 | ENDIF |
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116 | |
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117 | ENDDO |
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118 | ENDDO |
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119 | ENDDO |
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120 | |
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121 | END SUBROUTINE advec_w_up |
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122 | |
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123 | |
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124 | !--------------------------------------------------------------------------------------------------! |
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125 | ! Description: |
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126 | ! ------------ |
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127 | !> Call for grid point i,j |
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128 | !--------------------------------------------------------------------------------------------------! |
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129 | SUBROUTINE advec_w_up_ij( i, j ) |
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130 | |
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131 | USE arrays_3d, & |
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132 | ONLY: ddzw, tend, u, v, w |
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133 | |
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134 | USE control_parameters, & |
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135 | ONLY: u_gtrans, v_gtrans |
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136 | |
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137 | USE grid_variables, & |
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138 | ONLY: ddx, ddy |
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139 | |
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140 | USE indices, & |
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141 | ONLY: nzb, nzt |
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142 | |
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143 | USE kinds |
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144 | |
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145 | |
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146 | IMPLICIT NONE |
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147 | |
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148 | INTEGER(iwp) :: i !< grid index along x-direction |
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149 | INTEGER(iwp) :: j !< grid index along y-direction |
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150 | INTEGER(iwp) :: k !< grid index along z-direction |
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151 | |
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152 | REAL(wp) :: ukomp !< advection velocity along x-direction |
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153 | REAL(wp) :: vkomp !< advection velocity along y-direction |
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154 | |
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155 | |
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156 | DO k = nzb+1, nzt-1 |
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157 | ! |
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158 | !-- x-direction |
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159 | ukomp = 0.25_wp * ( u(k,j,i) + u(k,j,i+1) + u(k+1,j,i) + u(k+1,j,i+1) ) - u_gtrans |
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160 | IF ( ukomp > 0.0_wp ) THEN |
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161 | tend(k,j,i) = tend(k,j,i) - ukomp * ( w(k,j,i) - w(k,j,i-1) ) * ddx |
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162 | ELSE |
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163 | tend(k,j,i) = tend(k,j,i) - ukomp * ( w(k,j,i+1) - w(k,j,i) ) * ddx |
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164 | ENDIF |
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165 | ! |
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166 | !-- y-direction |
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167 | vkomp = 0.25_wp * ( v(k,j,i) + v(k,j+1,i) + v(k+1,j,i) + v(k+1,j+1,i) ) - v_gtrans |
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168 | IF ( vkomp > 0.0_wp ) THEN |
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169 | tend(k,j,i) = tend(k,j,i) - vkomp * ( w(k,j,i) - w(k,j-1,i) ) * ddy |
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170 | ELSE |
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171 | tend(k,j,i) = tend(k,j,i) - vkomp * ( w(k,j+1,i) - w(k,j,i) ) * ddy |
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172 | ENDIF |
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173 | ! |
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174 | !-- z-direction |
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175 | IF ( w(k,j,i) > 0.0_wp ) THEN |
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176 | tend(k,j,i) = tend(k,j,i) - w(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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177 | ELSE |
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178 | tend(k,j,i) = tend(k,j,i) - w(k,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) |
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179 | ENDIF |
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180 | |
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181 | ENDDO |
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182 | |
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183 | END SUBROUTINE advec_w_up_ij |
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184 | |
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185 | END MODULE advec_w_up_mod |
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