1 | MODULE advec_u_up_mod |
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2 | |
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3 | !--------------------------------------------------------------------------------! |
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4 | ! This file is part of PALM. |
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5 | ! |
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6 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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7 | ! of the GNU General Public License as published by the Free Software Foundation, |
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8 | ! either version 3 of the License, or (at your option) any later 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 1997-2012 Leibniz University 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 1036 2012-10-22 13:43:42Z raasch $ |
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27 | ! |
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28 | ! 106 2007-08-16 14:30:26Z raasch |
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29 | ! i loop is starting from nxlu (needed for non-cyclic boundary conditions) |
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30 | ! |
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31 | ! 75 2007-03-22 09:54:05Z raasch |
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32 | ! uxrp eliminated |
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33 | ! |
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34 | ! RCS Log replace by Id keyword, revision history cleaned up |
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35 | ! |
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36 | ! Revision 1.12 2006/02/23 09:45:04 raasch |
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37 | ! nzb_2d replaced by nzb_u_inner |
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38 | ! |
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39 | ! Revision 1.1 1997/08/29 08:55:25 raasch |
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40 | ! Initial revision |
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41 | ! |
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42 | ! |
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43 | ! Description: |
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44 | ! ------------ |
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45 | ! Advection term for the u velocity-component using upstream scheme. |
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46 | ! NOTE: vertical advection at k=1 still has wrong grid spacing for w>0! |
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47 | ! The same problem occurs for all topography boundaries! |
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48 | !------------------------------------------------------------------------------! |
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49 | |
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50 | PRIVATE |
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51 | PUBLIC advec_u_up |
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52 | |
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53 | INTERFACE advec_u_up |
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54 | MODULE PROCEDURE advec_u_up |
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55 | MODULE PROCEDURE advec_u_up_ij |
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56 | END INTERFACE advec_u_up |
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57 | |
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58 | CONTAINS |
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59 | |
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60 | |
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61 | !------------------------------------------------------------------------------! |
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62 | ! Call for all grid points |
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63 | !------------------------------------------------------------------------------! |
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64 | SUBROUTINE advec_u_up |
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65 | |
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66 | USE arrays_3d |
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67 | USE control_parameters |
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68 | USE grid_variables |
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69 | USE indices |
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70 | |
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71 | IMPLICIT NONE |
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72 | |
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73 | INTEGER :: i, j, k |
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74 | |
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75 | REAL :: ukomp, vkomp, wkomp |
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76 | |
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77 | |
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78 | DO i = nxlu, nxr |
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79 | DO j = nys, nyn |
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80 | DO k = nzb_u_inner(j,i)+1, nzt |
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81 | ! |
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82 | !-- x-direction |
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83 | ukomp = u(k,j,i) - u_gtrans |
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84 | IF ( ukomp > 0.0 ) THEN |
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85 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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86 | ( u(k,j,i) - u(k,j,i-1) ) * ddx |
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87 | ELSE |
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88 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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89 | ( u(k,j,i+1) - u(k,j,i) ) * ddx |
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90 | ENDIF |
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91 | ! |
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92 | !-- y-direction |
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93 | vkomp = 0.25 * ( v(k,j,i) + v(k,j+1,i) + & |
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94 | v(k,j,i-1) + v(k,j+1,i-1) ) - v_gtrans |
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95 | IF ( vkomp > 0.0 ) THEN |
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96 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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97 | ( u(k,j,i) - u(k,j-1,i) ) * ddy |
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98 | ELSE |
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99 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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100 | ( u(k,j+1,i) - u(k,j,i) ) * ddy |
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101 | ENDIF |
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102 | ! |
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103 | !-- z-direction |
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104 | wkomp = 0.25 * ( w(k,j,i) + w(k-1,j,i) + & |
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105 | w(k,j,i-1) + w(k-1,j,i-1) ) |
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106 | IF ( wkomp > 0.0 ) THEN |
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107 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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108 | ( u(k,j,i) - u(k-1,j,i) ) * ddzu(k) |
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109 | ELSE |
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110 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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111 | ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) |
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112 | ENDIF |
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113 | |
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114 | ENDDO |
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115 | ENDDO |
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116 | ENDDO |
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117 | |
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118 | END SUBROUTINE advec_u_up |
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119 | |
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120 | |
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121 | !------------------------------------------------------------------------------! |
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122 | ! Call for grid point i,j |
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123 | !------------------------------------------------------------------------------! |
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124 | SUBROUTINE advec_u_up_ij( i, j ) |
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125 | |
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126 | USE arrays_3d |
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127 | USE control_parameters |
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128 | USE grid_variables |
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129 | USE indices |
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130 | |
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131 | IMPLICIT NONE |
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132 | |
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133 | INTEGER :: i, j, k |
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134 | |
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135 | REAL :: ukomp, vkomp, wkomp |
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136 | |
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137 | |
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138 | DO k = nzb_u_inner(j,i)+1, nzt |
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139 | ! |
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140 | !-- x-direction |
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141 | ukomp = u(k,j,i) - u_gtrans |
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142 | IF ( ukomp > 0.0 ) THEN |
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143 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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144 | ( u(k,j,i) - u(k,j,i-1) ) * ddx |
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145 | ELSE |
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146 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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147 | ( u(k,j,i+1) - u(k,j,i) ) * ddx |
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148 | ENDIF |
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149 | ! |
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150 | !-- y-direction |
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151 | vkomp = 0.25 * ( v(k,j,i) + v(k,j+1,i) + v(k,j,i-1) + v(k,j+1,i-1) & |
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152 | ) - v_gtrans |
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153 | IF ( vkomp > 0.0 ) THEN |
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154 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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155 | ( u(k,j,i) - u(k,j-1,i) ) * ddy |
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156 | ELSE |
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157 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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158 | ( u(k,j+1,i) - u(k,j,i) ) * ddy |
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159 | ENDIF |
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160 | ! |
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161 | !-- z-direction |
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162 | wkomp = 0.25 * ( w(k,j,i) + w(k-1,j,i) + w(k,j,i-1) + w(k-1,j,i-1) ) |
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163 | IF ( wkomp > 0.0 ) THEN |
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164 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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165 | ( u(k,j,i) - u(k-1,j,i) ) * ddzu(k) |
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166 | ELSE |
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167 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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168 | ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) |
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169 | ENDIF |
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170 | |
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171 | ENDDO |
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172 | |
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173 | END SUBROUTINE advec_u_up_ij |
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174 | |
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175 | END MODULE advec_u_up_mod |
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