1 | !> @file diffusion_e.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_e.f90 2233 2017-05-30 18:08:54Z basit $ |
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27 | ! |
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28 | ! 2232 2017-05-30 17:47:52Z suehring |
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29 | ! Adjustments to new topography and surface concept |
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30 | ! |
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31 | ! 2118 2017-01-17 16:38:49Z raasch |
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32 | ! OpenACC version of subroutine removed |
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33 | ! |
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34 | ! 2037 2016-10-26 11:15:40Z knoop |
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35 | ! Anelastic approximation implemented |
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36 | ! |
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37 | ! 2000 2016-08-20 18:09:15Z knoop |
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38 | ! Forced header and separation lines into 80 columns |
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39 | ! |
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40 | ! 1873 2016-04-18 14:50:06Z maronga |
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41 | ! Module renamed (removed _mod) |
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42 | ! |
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43 | ! 1850 2016-04-08 13:29:27Z maronga |
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44 | ! Module renamed |
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45 | ! Adapted for modularization of microphysics |
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46 | ! |
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47 | ! 1831 2016-04-07 13:15:51Z hoffmann |
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48 | ! turbulence renamed collision_turbulence |
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49 | ! |
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50 | ! 1682 2015-10-07 23:56:08Z knoop |
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51 | ! Code annotations made doxygen readable |
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52 | ! |
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53 | ! 1374 2014-04-25 12:55:07Z raasch |
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54 | ! missing variables added to ONLY list |
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55 | ! rif removed from acc-present-list |
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56 | ! |
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57 | ! 1340 2014-03-25 19:45:13Z kanani |
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58 | ! REAL constants defined as wp-kind |
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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 | ! 1257 2013-11-08 15:18:40Z raasch |
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69 | ! openacc loop and loop vector clauses removed |
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70 | ! |
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71 | ! 1179 2013-06-14 05:57:58Z raasch |
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72 | ! use_reference renamed use_single_reference_value |
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73 | ! |
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74 | ! 1171 2013-05-30 11:27:45Z raasch |
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75 | ! use_reference-case activated in accelerator version |
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76 | ! |
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77 | ! 1128 2013-04-12 06:19:32Z raasch |
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78 | ! loop index bounds in accelerator version replaced by i_left, i_right, j_south, |
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79 | ! j_north |
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80 | ! |
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81 | ! 1065 2012-11-22 17:42:36Z hoffmann |
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82 | ! Enabled the claculation of diss in case of turbulence = .TRUE. (parameterized |
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83 | ! effects of turbulence on autoconversion and accretion in two-moments cloud |
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84 | ! physics scheme). |
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85 | ! |
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86 | ! 1036 2012-10-22 13:43:42Z raasch |
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87 | ! code put under GPL (PALM 3.9) |
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88 | ! |
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89 | ! 1015 2012-09-27 09:23:24Z raasch |
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90 | ! accelerator version (*_acc) added, |
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91 | ! adjustment of mixing length to the Prandtl mixing length at first grid point |
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92 | ! above ground removed |
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93 | ! |
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94 | ! 1010 2012-09-20 07:59:54Z raasch |
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95 | ! cpp switch __nopointer added for pointer free version |
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96 | ! |
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97 | ! 1001 2012-09-13 14:08:46Z raasch |
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98 | ! most arrays comunicated by module instead of parameter list |
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99 | ! |
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100 | ! 825 2012-02-19 03:03:44Z raasch |
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101 | ! wang_collision_kernel renamed wang_kernel |
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102 | ! |
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103 | ! Revision 1.1 1997/09/19 07:40:24 raasch |
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104 | ! Initial revision |
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105 | ! |
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106 | ! |
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107 | ! Description: |
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108 | ! ------------ |
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109 | !> Diffusion- and dissipation terms for the TKE |
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110 | !------------------------------------------------------------------------------! |
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111 | MODULE diffusion_e_mod |
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112 | |
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113 | |
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114 | PRIVATE |
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115 | PUBLIC diffusion_e |
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116 | |
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117 | |
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118 | INTERFACE diffusion_e |
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119 | MODULE PROCEDURE diffusion_e |
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120 | MODULE PROCEDURE diffusion_e_ij |
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121 | END INTERFACE diffusion_e |
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122 | |
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123 | CONTAINS |
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124 | |
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125 | |
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126 | !------------------------------------------------------------------------------! |
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127 | ! Description: |
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128 | ! ------------ |
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129 | !> Call for all grid points |
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130 | !------------------------------------------------------------------------------! |
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131 | SUBROUTINE diffusion_e( var, var_reference ) |
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132 | |
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133 | USE arrays_3d, & |
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134 | ONLY: dd2zu, ddzu, ddzw, diss, e, km, l_grid, l_wall, tend, zu, zw,& |
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135 | drho_air, rho_air_zw |
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136 | |
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137 | USE control_parameters, & |
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138 | ONLY: atmos_ocean_sign, g, use_single_reference_value, & |
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139 | wall_adjustment, wall_adjustment_factor |
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140 | |
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141 | USE grid_variables, & |
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142 | ONLY: ddx2, ddy2 |
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143 | |
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144 | USE indices, & |
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145 | ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzb_max, & |
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146 | nzt, wall_flags_0 |
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147 | |
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148 | USE kinds |
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149 | |
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150 | USE microphysics_mod, & |
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151 | ONLY: collision_turbulence |
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152 | |
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153 | USE particle_attributes, & |
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154 | ONLY: use_sgs_for_particles, wang_kernel |
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155 | |
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156 | USE surface_mod, & |
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157 | ONLY : bc_h |
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158 | |
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159 | IMPLICIT NONE |
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160 | |
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161 | INTEGER(iwp) :: i !< running index x direction |
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162 | INTEGER(iwp) :: j !< running index y direction |
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163 | INTEGER(iwp) :: k !< running index z direction |
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164 | INTEGER(iwp) :: m !< running index surface elements |
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165 | |
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166 | REAL(wp) :: dvar_dz !< |
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167 | REAL(wp) :: flag !< flag to mask topography |
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168 | REAL(wp) :: l_stable !< |
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169 | REAL(wp) :: var_reference !< |
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170 | |
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171 | #if defined( __nopointer ) |
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172 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !< |
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173 | #else |
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174 | REAL(wp), DIMENSION(:,:,:), POINTER :: var !< |
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175 | #endif |
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176 | REAL(wp), DIMENSION(nzb+1:nzt,nys:nyn) :: dissipation !< |
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177 | REAL(wp), DIMENSION(nzb+1:nzt,nys:nyn) :: l !< |
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178 | REAL(wp), DIMENSION(nzb+1:nzt,nys:nyn) :: ll !< |
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179 | |
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180 | |
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181 | ! |
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182 | !-- This if clause must be outside the k-loop because otherwise |
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183 | !-- runtime errors occur with -C hopt on NEC |
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184 | IF ( use_single_reference_value ) THEN |
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185 | |
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186 | DO i = nxl, nxr |
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187 | DO j = nys, nyn |
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188 | DO k = nzb+1, nzt |
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189 | ! |
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190 | !-- Calculate the mixing length (for dissipation) |
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191 | dvar_dz = atmos_ocean_sign * & |
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192 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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193 | IF ( dvar_dz > 0.0_wp ) THEN |
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194 | l_stable = 0.76_wp * SQRT( e(k,j,i) ) / & |
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195 | SQRT( g / var_reference * dvar_dz ) + 1E-5_wp |
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196 | ELSE |
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197 | l_stable = l_grid(k) |
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198 | ENDIF |
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199 | ! |
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200 | !-- Adjustment of the mixing length |
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201 | IF ( wall_adjustment ) THEN |
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202 | l(k,j) = MIN( wall_adjustment_factor * l_wall(k,j,i), & |
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203 | l_grid(k), l_stable ) |
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204 | ll(k,j) = MIN( wall_adjustment_factor * l_wall(k,j,i), & |
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205 | l_grid(k) ) |
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206 | ELSE |
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207 | l(k,j) = MIN( l_grid(k), l_stable ) |
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208 | ll(k,j) = l_grid(k) |
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209 | ENDIF |
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210 | |
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211 | ENDDO |
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212 | ENDDO |
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213 | |
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214 | ! |
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215 | !-- Calculate the tendency terms |
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216 | DO j = nys, nyn |
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217 | DO k = nzb+1, nzt |
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218 | ! |
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219 | !-- Predetermine flag to mask topography |
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220 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j,i), 0 ) ) |
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221 | |
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222 | dissipation(k,j) = ( 0.19_wp + 0.74_wp * l(k,j) / ll(k,j) ) * & |
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223 | e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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224 | |
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225 | tend(k,j,i) = tend(k,j,i) & |
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226 | + ( & |
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227 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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228 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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229 | ) * ddx2 * flag & |
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230 | + ( & |
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231 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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232 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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233 | ) * ddy2 * flag & |
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234 | + ( & |
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235 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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236 | * rho_air_zw(k) & |
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237 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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238 | * rho_air_zw(k-1) & |
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239 | ) * ddzw(k) * drho_air(k) * flag & |
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240 | - dissipation(k,j) * flag |
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241 | |
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242 | ENDDO |
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243 | ENDDO |
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244 | |
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245 | ! |
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246 | !-- Store dissipation if needed for calculating the sgs particle |
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247 | !-- velocities |
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248 | IF ( use_sgs_for_particles .OR. wang_kernel .OR. & |
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249 | collision_turbulence ) THEN |
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250 | DO j = nys, nyn |
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251 | DO k = nzb+1, nzt |
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252 | diss(k,j,i) = dissipation(k,j) * & |
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253 | MERGE( 1.0_wp, 0.0_wp, & |
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254 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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255 | ENDDO |
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256 | ENDDO |
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257 | ENDIF |
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258 | |
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259 | ENDDO |
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260 | |
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261 | ELSE |
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262 | |
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263 | DO i = nxl, nxr |
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264 | DO j = nys, nyn |
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265 | DO k = nzb+1, nzt |
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266 | ! |
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267 | !-- Calculate the mixing length (for dissipation) |
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268 | dvar_dz = atmos_ocean_sign * & |
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269 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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270 | IF ( dvar_dz > 0.0_wp ) THEN |
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271 | l_stable = 0.76_wp * SQRT( e(k,j,i) ) / & |
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272 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5_wp |
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273 | ELSE |
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274 | l_stable = l_grid(k) |
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275 | ENDIF |
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276 | ! |
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277 | !-- Adjustment of the mixing length |
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278 | IF ( wall_adjustment ) THEN |
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279 | l(k,j) = MIN( wall_adjustment_factor * l_wall(k,j,i), & |
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280 | l_grid(k), l_stable ) |
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281 | ll(k,j) = MIN( wall_adjustment_factor * l_wall(k,j,i), & |
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282 | l_grid(k) ) |
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283 | ELSE |
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284 | l(k,j) = MIN( l_grid(k), l_stable ) |
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285 | ll(k,j) = l_grid(k) |
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286 | ENDIF |
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287 | |
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288 | ENDDO |
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289 | ENDDO |
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290 | |
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291 | ! |
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292 | !-- Calculate the tendency terms |
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293 | DO j = nys, nyn |
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294 | DO k = nzb+1, nzt |
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295 | ! |
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296 | !-- Predetermine flag to mask topography |
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297 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j,i), 0 ) ) |
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298 | |
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299 | dissipation(k,j) = ( 0.19_wp + 0.74_wp * l(k,j) / ll(k,j) ) *& |
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300 | e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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301 | |
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302 | tend(k,j,i) = tend(k,j,i) & |
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303 | + ( & |
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304 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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305 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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306 | ) * ddx2 * flag & |
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307 | + ( & |
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308 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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309 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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310 | ) * ddy2 * flag & |
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311 | + ( & |
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312 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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313 | * rho_air_zw(k) & |
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314 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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315 | * rho_air_zw(k-1) & |
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316 | ) * ddzw(k) * drho_air(k) * flag & |
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317 | - dissipation(k,j) * flag |
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318 | |
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319 | ENDDO |
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320 | ENDDO |
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321 | |
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322 | ! |
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323 | !-- Store dissipation if needed for calculating the sgs particle |
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324 | !-- velocities |
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325 | IF ( use_sgs_for_particles .OR. wang_kernel .OR. & |
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326 | collision_turbulence ) THEN |
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327 | DO j = nys, nyn |
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328 | DO k = nzb+1, nzt |
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329 | diss(k,j,i) = dissipation(k,j) * & |
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330 | MERGE( 1.0_wp, 0.0_wp, & |
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331 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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332 | ENDDO |
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333 | ENDDO |
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334 | ENDIF |
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335 | |
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336 | ENDDO |
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337 | |
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338 | ENDIF |
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339 | |
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340 | ! |
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341 | !-- Neumann boundary condition for dissipation diss(nzb,:,:) = diss(nzb+1,:,:) |
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342 | IF ( use_sgs_for_particles .OR. wang_kernel .OR. & |
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343 | collision_turbulence ) THEN |
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344 | ! |
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345 | !-- Upward facing surfaces |
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346 | DO m = 1, bc_h(0)%ns |
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347 | i = bc_h(0)%i(m) |
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348 | j = bc_h(0)%j(m) |
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349 | k = bc_h(0)%k(m) |
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350 | diss(k-1,j,i) = diss(k,j,i) |
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351 | ENDDO |
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352 | ! |
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353 | !-- Downward facing surfaces |
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354 | DO m = 1, bc_h(1)%ns |
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355 | i = bc_h(1)%i(m) |
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356 | j = bc_h(1)%j(m) |
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357 | k = bc_h(1)%k(m) |
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358 | diss(k+1,j,i) = diss(k,j,i) |
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359 | ENDDO |
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360 | |
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361 | ENDIF |
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362 | |
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363 | END SUBROUTINE diffusion_e |
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364 | |
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365 | |
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366 | !------------------------------------------------------------------------------! |
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367 | ! Description: |
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368 | ! ------------ |
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369 | !> Call for grid point i,j |
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370 | !------------------------------------------------------------------------------! |
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371 | SUBROUTINE diffusion_e_ij( i, j, var, var_reference ) |
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372 | |
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373 | USE arrays_3d, & |
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374 | ONLY: dd2zu, ddzu, ddzw, diss, e, km, l_grid, l_wall, tend, zu, zw,& |
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375 | drho_air, rho_air_zw |
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376 | |
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377 | USE control_parameters, & |
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378 | ONLY: atmos_ocean_sign, g, use_single_reference_value, & |
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379 | wall_adjustment, wall_adjustment_factor |
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380 | |
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381 | USE grid_variables, & |
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382 | ONLY: ddx2, ddy2 |
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383 | |
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384 | USE indices, & |
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385 | ONLY: nxlg, nxrg, nyng, nysg, nzb, nzb_max, nzt, wall_flags_0 |
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386 | |
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387 | USE kinds |
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388 | |
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389 | USE microphysics_mod, & |
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390 | ONLY: collision_turbulence |
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391 | |
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392 | USE particle_attributes, & |
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393 | ONLY: use_sgs_for_particles, wang_kernel |
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394 | |
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395 | USE surface_mod, & |
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396 | ONLY : bc_h |
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397 | |
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398 | IMPLICIT NONE |
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399 | |
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400 | INTEGER(iwp) :: i !< running index x direction |
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401 | INTEGER(iwp) :: j !< running index y direction |
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402 | INTEGER(iwp) :: k !< running index z direction |
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403 | INTEGER(iwp) :: m !< running index surface elements |
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404 | INTEGER(iwp) :: surf_e !< End index of surface elements at (j,i)-gridpoint |
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405 | INTEGER(iwp) :: surf_s !< Start index of surface elements at (j,i)-gridpoint |
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406 | |
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407 | REAL(wp) :: dvar_dz !< |
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408 | REAL(wp) :: flag !< flag to mask topography |
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409 | REAL(wp) :: l_stable !< |
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410 | REAL(wp) :: var_reference !< |
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411 | |
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412 | #if defined( __nopointer ) |
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413 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !< |
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414 | #else |
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415 | REAL(wp), DIMENSION(:,:,:), POINTER :: var !< |
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416 | #endif |
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417 | REAL(wp), DIMENSION(nzb+1:nzt) :: dissipation !< |
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418 | REAL(wp), DIMENSION(nzb+1:nzt) :: l !< |
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419 | REAL(wp), DIMENSION(nzb+1:nzt) :: ll !< |
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420 | |
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421 | ! |
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422 | !-- Calculate the mixing length (for dissipation) |
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423 | DO k = nzb+1, nzt |
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424 | ! |
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425 | !-- Predetermine flag to mask topography |
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426 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j,i), 0 ) ) |
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427 | |
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428 | dvar_dz = atmos_ocean_sign * & |
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429 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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430 | IF ( dvar_dz > 0.0_wp ) THEN |
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431 | IF ( use_single_reference_value ) THEN |
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432 | l_stable = 0.76_wp * SQRT( e(k,j,i) ) / & |
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433 | SQRT( g / var_reference * dvar_dz ) + 1E-5_wp |
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434 | ELSE |
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435 | l_stable = 0.76_wp * SQRT( e(k,j,i) ) / & |
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436 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5_wp |
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437 | ENDIF |
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438 | ELSE |
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439 | l_stable = l_grid(k) |
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440 | ENDIF |
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441 | ! |
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442 | !-- Adjustment of the mixing length |
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443 | IF ( wall_adjustment ) THEN |
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444 | l(k) = MIN( wall_adjustment_factor * l_wall(k,j,i), & |
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445 | l_grid(k), l_stable ) |
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446 | ll(k) = MIN( wall_adjustment_factor * l_wall(k,j,i), l_grid(k) ) |
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447 | ELSE |
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448 | l(k) = MIN( l_grid(k), l_stable ) |
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449 | ll(k) = l_grid(k) |
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450 | ENDIF |
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451 | ! |
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452 | !-- Calculate the tendency term |
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453 | dissipation(k) = ( 0.19_wp + 0.74_wp * l(k) / ll(k) ) * e(k,j,i) * & |
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454 | SQRT( e(k,j,i) ) / l(k) |
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455 | |
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456 | tend(k,j,i) = tend(k,j,i) & |
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457 | + ( & |
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458 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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459 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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460 | ) * ddx2 * flag & |
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461 | + ( & |
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462 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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463 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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464 | ) * ddy2 * flag & |
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465 | + ( & |
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466 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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467 | * rho_air_zw(k) & |
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468 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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469 | * rho_air_zw(k-1) & |
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470 | ) * ddzw(k) * drho_air(k) * flag & |
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471 | - dissipation(k) * flag |
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472 | |
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473 | ENDDO |
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474 | |
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475 | ! |
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476 | !-- Store dissipation if needed for calculating the sgs particle velocities |
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477 | IF ( use_sgs_for_particles .OR. wang_kernel .OR. & |
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478 | collision_turbulence ) THEN |
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479 | DO k = nzb+1, nzt |
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480 | diss(k,j,i) = dissipation(k) * & |
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481 | MERGE( 1.0_wp, 0.0_wp, & |
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482 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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483 | ENDDO |
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484 | ! |
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485 | !-- Neumann boundary condition for dissipation diss(nzb,:,:) = diss(nzb+1,:,:) |
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486 | !-- For each surface type determine start and end index (in case of elevated |
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487 | !-- toopography several up/downward facing surfaces may exist. |
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488 | surf_s = bc_h(0)%start_index(j,i) |
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489 | surf_e = bc_h(0)%end_index(j,i) |
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490 | DO m = surf_s, surf_e |
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491 | k = bc_h(0)%k(m) |
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492 | diss(k-1,j,i) = diss(k,j,i) |
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493 | ENDDO |
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494 | ! |
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495 | !-- Downward facing surfaces |
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496 | surf_s = bc_h(1)%start_index(j,i) |
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497 | surf_e = bc_h(1)%end_index(j,i) |
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498 | DO m = surf_s, surf_e |
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499 | k = bc_h(1)%k(m) |
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500 | diss(k+1,j,i) = diss(k,j,i) |
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501 | ENDDO |
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502 | ENDIF |
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503 | |
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504 | END SUBROUTINE diffusion_e_ij |
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505 | |
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506 | END MODULE diffusion_e_mod |
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