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 1997-2019 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 3655 2019-01-07 16:51:22Z suehring $ |
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27 | ! variables documented |
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28 | ! |
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29 | ! 3538 2018-11-20 10:55:41Z suehring |
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30 | ! Remove unnecessary double-masking of topography |
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31 | ! |
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32 | ! 2718 2018-01-02 08:49:38Z maronga |
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33 | ! Corrected "Former revisions" section |
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34 | ! |
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35 | ! 2696 2017-12-14 17:12:51Z kanani |
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36 | ! Change in file header (GPL part) |
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37 | ! |
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38 | ! 2233 2017-05-30 18:08:54Z suehring |
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39 | ! |
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40 | ! 2232 2017-05-30 17:47:52Z suehring |
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41 | ! topography representation via flags |
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42 | ! |
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43 | ! 2000 2016-08-20 18:09:15Z knoop |
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44 | ! Forced header and separation lines into 80 columns |
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45 | ! |
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46 | ! 1873 2016-04-18 14:50:06Z maronga |
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47 | ! Module renamed (removed _mod) |
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48 | ! |
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49 | ! |
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50 | ! 1850 2016-04-08 13:29:27Z maronga |
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51 | ! Module renamed |
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52 | ! |
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53 | ! |
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54 | ! 1682 2015-10-07 23:56:08Z knoop |
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55 | ! Code annotations made doxygen readable |
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56 | ! |
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57 | ! 1353 2014-04-08 15:21:23Z heinze |
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58 | ! REAL constants provided with KIND-attribute |
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59 | ! |
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60 | ! 1320 2014-03-20 08:40:49Z raasch |
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61 | ! ONLY-attribute added to USE-statements, |
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62 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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63 | ! kinds are defined in new module kinds, |
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64 | ! revision history before 2012 removed, |
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65 | ! comment fields (!:) to be used for variable explanations added to |
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66 | ! all variable declaration statements |
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67 | ! |
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68 | ! 1036 2012-10-22 13:43:42Z raasch |
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69 | ! code put under GPL (PALM 3.9) |
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70 | ! |
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71 | ! Revision 1.1 1997/08/29 08:55:25 raasch |
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72 | ! Initial revision |
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73 | ! |
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74 | ! |
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75 | ! Description: |
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76 | ! ------------ |
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77 | !> Advection term for the u velocity-component using upstream scheme. |
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78 | !> NOTE: vertical advection at k=1 still has wrong grid spacing for w>0! |
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79 | !> The same problem occurs for all topography boundaries! |
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80 | !------------------------------------------------------------------------------! |
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81 | MODULE advec_u_up_mod |
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82 | |
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83 | |
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84 | PRIVATE |
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85 | PUBLIC advec_u_up |
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86 | |
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87 | INTERFACE advec_u_up |
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88 | MODULE PROCEDURE advec_u_up |
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89 | MODULE PROCEDURE advec_u_up_ij |
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90 | END INTERFACE advec_u_up |
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91 | |
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92 | CONTAINS |
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93 | |
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94 | |
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95 | !------------------------------------------------------------------------------! |
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96 | ! Description: |
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97 | ! ------------ |
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98 | !> Call for all grid points |
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99 | !------------------------------------------------------------------------------! |
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100 | SUBROUTINE advec_u_up |
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101 | |
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102 | USE arrays_3d, & |
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103 | ONLY: ddzu, tend, u, v, w |
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104 | |
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105 | USE control_parameters, & |
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106 | ONLY: u_gtrans, v_gtrans |
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107 | |
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108 | USE grid_variables, & |
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109 | ONLY: ddx, ddy |
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110 | |
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111 | USE indices, & |
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112 | ONLY: nxlu, nxr, nyn, nys, nzb, nzt |
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113 | |
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114 | USE kinds |
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115 | |
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116 | |
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117 | IMPLICIT NONE |
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118 | |
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119 | INTEGER(iwp) :: i !< grid index along x-direction |
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120 | INTEGER(iwp) :: j !< grid index along y-direction |
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121 | INTEGER(iwp) :: k !< grid index along z-direction |
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122 | |
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123 | REAL(wp) :: ukomp !< advection velocity along x-direction |
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124 | REAL(wp) :: vkomp !< advection velocity along y-direction |
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125 | REAL(wp) :: wkomp !< advection velocity along z-direction |
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126 | |
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127 | |
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128 | DO i = nxlu, nxr |
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129 | DO j = nys, nyn |
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130 | DO k = nzb+1, nzt |
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131 | ! |
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132 | !-- x-direction |
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133 | ukomp = u(k,j,i) - u_gtrans |
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134 | IF ( ukomp > 0.0_wp ) THEN |
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135 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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136 | ( u(k,j,i) - u(k,j,i-1) ) * ddx |
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137 | ELSE |
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138 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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139 | ( u(k,j,i+1) - u(k,j,i) ) * ddx |
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140 | ENDIF |
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141 | ! |
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142 | !-- y-direction |
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143 | vkomp = 0.25_wp * ( v(k,j,i) + v(k,j+1,i) + & |
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144 | v(k,j,i-1) + v(k,j+1,i-1) ) - v_gtrans |
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145 | IF ( vkomp > 0.0_wp ) THEN |
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146 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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147 | ( u(k,j,i) - u(k,j-1,i) ) * ddy |
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148 | ELSE |
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149 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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150 | ( u(k,j+1,i) - u(k,j,i) ) * ddy |
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151 | ENDIF |
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152 | ! |
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153 | !-- z-direction |
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154 | wkomp = 0.25_wp * ( w(k,j,i) + w(k-1,j,i) + & |
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155 | w(k,j,i-1) + w(k-1,j,i-1) ) |
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156 | IF ( wkomp > 0.0_wp ) THEN |
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157 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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158 | ( u(k,j,i) - u(k-1,j,i) ) * ddzu(k) |
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159 | ELSE |
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160 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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161 | ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) |
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162 | ENDIF |
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163 | |
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164 | ENDDO |
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165 | ENDDO |
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166 | ENDDO |
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167 | |
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168 | END SUBROUTINE advec_u_up |
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169 | |
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170 | |
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171 | !------------------------------------------------------------------------------! |
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172 | ! Description: |
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173 | ! ------------ |
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174 | !> Call for grid point i,j |
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175 | !------------------------------------------------------------------------------! |
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176 | SUBROUTINE advec_u_up_ij( i, j ) |
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177 | |
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178 | USE arrays_3d, & |
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179 | ONLY: ddzu, tend, u, v, w |
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180 | |
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181 | USE control_parameters, & |
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182 | ONLY: u_gtrans, v_gtrans |
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183 | |
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184 | USE grid_variables, & |
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185 | ONLY: ddx, ddy |
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186 | |
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187 | USE indices, & |
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188 | ONLY: nzb, nzt |
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189 | |
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190 | USE kinds |
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191 | |
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192 | |
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193 | IMPLICIT NONE |
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194 | |
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195 | INTEGER(iwp) :: i !< grid index along x-direction |
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196 | INTEGER(iwp) :: j !< grid index along y-direction |
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197 | INTEGER(iwp) :: k !< grid index along z-direction |
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198 | |
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199 | REAL(wp) :: ukomp !< advection velocity along x-direction |
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200 | REAL(wp) :: vkomp !< advection velocity along y-direction |
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201 | REAL(wp) :: wkomp !< advection velocity along z-direction |
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202 | |
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203 | |
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204 | DO k = nzb+1, nzt |
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205 | ! |
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206 | !-- x-direction |
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207 | ukomp = u(k,j,i) - u_gtrans |
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208 | IF ( ukomp > 0.0_wp ) THEN |
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209 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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210 | ( u(k,j,i) - u(k,j,i-1) ) * ddx |
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211 | ELSE |
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212 | tend(k,j,i) = tend(k,j,i) - ukomp * & |
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213 | ( u(k,j,i+1) - u(k,j,i) ) * ddx |
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214 | ENDIF |
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215 | ! |
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216 | !-- y-direction |
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217 | 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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218 | ) - v_gtrans |
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219 | IF ( vkomp > 0.0_wp ) THEN |
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220 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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221 | ( u(k,j,i) - u(k,j-1,i) ) * ddy |
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222 | ELSE |
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223 | tend(k,j,i) = tend(k,j,i) - vkomp * & |
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224 | ( u(k,j+1,i) - u(k,j,i) ) * ddy |
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225 | ENDIF |
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226 | ! |
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227 | !-- z-direction |
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228 | 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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229 | IF ( wkomp > 0.0_wp ) THEN |
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230 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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231 | ( u(k,j,i) - u(k-1,j,i) ) * ddzu(k) |
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232 | ELSE |
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233 | tend(k,j,i) = tend(k,j,i) - wkomp * & |
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234 | ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) |
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235 | ENDIF |
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236 | |
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237 | ENDDO |
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238 | |
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239 | END SUBROUTINE advec_u_up_ij |
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240 | |
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241 | END MODULE advec_u_up_mod |
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