1 | !> @file lpm_init_sgs_tke.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: lpm_init_sgs_tke.f90 2101 2017-01-05 16:42:31Z schwenkel $ |
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27 | ! |
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28 | ! 2000 2016-08-20 18:09:15Z knoop |
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29 | ! Forced header and separation lines into 80 columns |
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30 | ! |
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31 | ! 1929 2016-06-09 16:25:25Z suehring |
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32 | ! sgs_wfu_par, sgs_wfv_par and sgs_wfw_par are replaced by sgs_wf_par |
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33 | ! |
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34 | ! 1822 2016-04-07 07:49:42Z hoffmann |
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35 | ! Unused variables removed. |
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36 | ! |
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37 | ! 1682 2015-10-07 23:56:08Z knoop |
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38 | ! Code annotations made doxygen readable |
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39 | ! |
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40 | ! 1359 2014-04-11 17:15:14Z hoffmann |
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41 | ! New particle structure integrated. |
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42 | ! Kind definition added to all floating point numbers. |
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43 | ! |
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44 | ! 1320 2014-03-20 08:40:49Z raasch |
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45 | ! ONLY-attribute added to USE-statements, |
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46 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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47 | ! kinds are defined in new module kinds, |
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48 | ! comment fields (!:) to be used for variable explanations added to |
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49 | ! all variable declaration statements |
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50 | ! |
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51 | ! 1036 2012-10-22 13:43:42Z raasch |
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52 | ! code put under GPL (PALM 3.9) |
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53 | ! |
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54 | ! 849 2012-03-15 10:35:09Z raasch |
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55 | ! initial revision (former part of advec_particles) |
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56 | ! |
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57 | ! |
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58 | ! Description: |
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59 | ! ------------ |
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60 | !> Calculates quantities required for considering the SGS velocity fluctuations |
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61 | !> in the particle transport by a stochastic approach. The respective |
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62 | !> quantities are: SGS-TKE gradients and horizontally averaged profiles of the |
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63 | !> SGS TKE and the resolved-scale velocity variances. |
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64 | !------------------------------------------------------------------------------! |
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65 | SUBROUTINE lpm_init_sgs_tke |
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66 | |
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67 | |
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68 | USE arrays_3d, & |
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69 | ONLY: de_dx, de_dy, de_dz, diss, e, u, v, w, zu |
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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: nbgp, ngp_2dh_outer, nxl, nxr, nyn, nys, nzb, nzb_s_inner, & |
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76 | nzb_s_outer, nzt |
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77 | |
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78 | USE kinds |
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79 | |
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80 | USE particle_attributes, & |
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81 | ONLY: sgs_wf_part |
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82 | |
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83 | USE pegrid |
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84 | |
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85 | USE statistics, & |
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86 | ONLY: flow_statistics_called, hom, sums, sums_l |
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87 | |
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88 | IMPLICIT NONE |
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89 | |
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90 | INTEGER(iwp) :: i !< |
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91 | INTEGER(iwp) :: j !< |
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92 | INTEGER(iwp) :: k !< |
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93 | |
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94 | |
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95 | ! |
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96 | !-- TKE gradient along x and y |
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97 | DO i = nxl, nxr |
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98 | DO j = nys, nyn |
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99 | DO k = nzb, nzt+1 |
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100 | |
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101 | IF ( k <= nzb_s_inner(j,i-1) .AND. k > nzb_s_inner(j,i) .AND. & |
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102 | k > nzb_s_inner(j,i+1) ) & |
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103 | THEN |
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104 | de_dx(k,j,i) = 2.0_wp * sgs_wf_part * & |
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105 | ( e(k,j,i+1) - e(k,j,i) ) * ddx |
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106 | ELSEIF ( k > nzb_s_inner(j,i-1) .AND. k > nzb_s_inner(j,i) & |
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107 | .AND. k <= nzb_s_inner(j,i+1) ) & |
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108 | THEN |
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109 | de_dx(k,j,i) = 2.0_wp * sgs_wf_part * & |
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110 | ( e(k,j,i) - e(k,j,i-1) ) * ddx |
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111 | ELSEIF ( k < nzb_s_inner(j,i) .AND. k < nzb_s_inner(j,i+1) ) & |
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112 | THEN |
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113 | de_dx(k,j,i) = 0.0_wp |
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114 | ELSEIF ( k < nzb_s_inner(j,i-1) .AND. k < nzb_s_inner(j,i) ) & |
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115 | THEN |
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116 | de_dx(k,j,i) = 0.0_wp |
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117 | ELSE |
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118 | de_dx(k,j,i) = sgs_wf_part * ( e(k,j,i+1) - e(k,j,i-1) ) * ddx |
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119 | ENDIF |
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120 | |
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121 | IF ( k <= nzb_s_inner(j-1,i) .AND. k > nzb_s_inner(j,i) .AND. & |
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122 | k > nzb_s_inner(j+1,i) ) & |
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123 | THEN |
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124 | de_dy(k,j,i) = 2.0_wp * sgs_wf_part * & |
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125 | ( e(k,j+1,i) - e(k,j,i) ) * ddy |
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126 | ELSEIF ( k > nzb_s_inner(j-1,i) .AND. k > nzb_s_inner(j,i) & |
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127 | .AND. k <= nzb_s_inner(j+1,i) ) & |
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128 | THEN |
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129 | de_dy(k,j,i) = 2.0_wp * sgs_wf_part * & |
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130 | ( e(k,j,i) - e(k,j-1,i) ) * ddy |
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131 | ELSEIF ( k < nzb_s_inner(j,i) .AND. k < nzb_s_inner(j+1,i) ) & |
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132 | THEN |
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133 | de_dy(k,j,i) = 0.0_wp |
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134 | ELSEIF ( k < nzb_s_inner(j-1,i) .AND. k < nzb_s_inner(j,i) ) & |
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135 | THEN |
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136 | de_dy(k,j,i) = 0.0_wp |
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137 | ELSE |
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138 | de_dy(k,j,i) = sgs_wf_part * ( e(k,j+1,i) - e(k,j-1,i) ) * ddy |
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139 | ENDIF |
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140 | |
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141 | ENDDO |
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142 | ENDDO |
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143 | ENDDO |
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144 | |
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145 | ! |
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146 | !-- TKE gradient along z, including bottom and top boundary conditions |
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147 | DO i = nxl, nxr |
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148 | DO j = nys, nyn |
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149 | |
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150 | DO k = nzb_s_inner(j,i)+2, nzt-1 |
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151 | de_dz(k,j,i) = 2.0_wp * sgs_wf_part * & |
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152 | ( e(k+1,j,i) - e(k-1,j,i) ) / ( zu(k+1)-zu(k-1) ) |
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153 | ENDDO |
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154 | |
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155 | k = nzb_s_inner(j,i) |
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156 | de_dz(nzb:k,j,i) = 0.0_wp |
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157 | de_dz(k+1,j,i) = 2.0_wp * sgs_wf_part * & |
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158 | ( e(k+2,j,i) - e(k+1,j,i) ) / ( zu(k+2) - zu(k+1) ) |
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159 | de_dz(nzt,j,i) = 0.0_wp |
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160 | de_dz(nzt+1,j,i) = 0.0_wp |
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161 | ENDDO |
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162 | ENDDO |
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163 | |
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164 | |
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165 | ! |
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166 | !-- Lateral boundary conditions |
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167 | CALL exchange_horiz( de_dx, nbgp ) |
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168 | CALL exchange_horiz( de_dy, nbgp ) |
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169 | CALL exchange_horiz( de_dz, nbgp ) |
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170 | CALL exchange_horiz( diss, nbgp ) |
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171 | |
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172 | |
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173 | ! |
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174 | !-- Calculate the horizontally averaged profiles of SGS TKE and resolved |
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175 | !-- velocity variances (they may have been already calculated in routine |
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176 | !-- flow_statistics). |
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177 | IF ( .NOT. flow_statistics_called ) THEN |
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178 | |
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179 | ! |
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180 | !-- First calculate horizontally averaged profiles of the horizontal |
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181 | !-- velocities. |
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182 | sums_l(:,1,0) = 0.0_wp |
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183 | sums_l(:,2,0) = 0.0_wp |
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184 | |
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185 | DO i = nxl, nxr |
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186 | DO j = nys, nyn |
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187 | DO k = nzb_s_outer(j,i), nzt+1 |
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188 | sums_l(k,1,0) = sums_l(k,1,0) + u(k,j,i) |
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189 | sums_l(k,2,0) = sums_l(k,2,0) + v(k,j,i) |
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190 | ENDDO |
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191 | ENDDO |
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192 | ENDDO |
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193 | |
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194 | #if defined( __parallel ) |
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195 | ! |
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196 | !-- Compute total sum from local sums |
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197 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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198 | CALL MPI_ALLREDUCE( sums_l(nzb,1,0), sums(nzb,1), nzt+2-nzb, & |
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199 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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200 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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201 | CALL MPI_ALLREDUCE( sums_l(nzb,2,0), sums(nzb,2), nzt+2-nzb, & |
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202 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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203 | #else |
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204 | sums(:,1) = sums_l(:,1,0) |
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205 | sums(:,2) = sums_l(:,2,0) |
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206 | #endif |
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207 | |
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208 | ! |
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209 | !-- Final values are obtained by division by the total number of grid |
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210 | !-- points used for the summation. |
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211 | hom(:,1,1,0) = sums(:,1) / ngp_2dh_outer(:,0) ! u |
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212 | hom(:,1,2,0) = sums(:,2) / ngp_2dh_outer(:,0) ! v |
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213 | |
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214 | ! |
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215 | !-- Now calculate the profiles of SGS TKE and the resolved-scale |
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216 | !-- velocity variances |
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217 | sums_l(:,8,0) = 0.0_wp |
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218 | sums_l(:,30,0) = 0.0_wp |
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219 | sums_l(:,31,0) = 0.0_wp |
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220 | sums_l(:,32,0) = 0.0_wp |
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221 | DO i = nxl, nxr |
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222 | DO j = nys, nyn |
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223 | DO k = nzb_s_outer(j,i), nzt+1 |
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224 | sums_l(k,8,0) = sums_l(k,8,0) + e(k,j,i) |
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225 | sums_l(k,30,0) = sums_l(k,30,0) + ( u(k,j,i) - hom(k,1,1,0) )**2 |
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226 | sums_l(k,31,0) = sums_l(k,31,0) + ( v(k,j,i) - hom(k,1,2,0) )**2 |
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227 | sums_l(k,32,0) = sums_l(k,32,0) + w(k,j,i)**2 |
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228 | ENDDO |
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229 | ENDDO |
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230 | ENDDO |
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231 | |
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232 | #if defined( __parallel ) |
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233 | ! |
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234 | !-- Compute total sum from local sums |
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235 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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236 | CALL MPI_ALLREDUCE( sums_l(nzb,8,0), sums(nzb,8), nzt+2-nzb, & |
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237 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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238 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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239 | CALL MPI_ALLREDUCE( sums_l(nzb,30,0), sums(nzb,30), nzt+2-nzb, & |
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240 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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241 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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242 | CALL MPI_ALLREDUCE( sums_l(nzb,31,0), sums(nzb,31), nzt+2-nzb, & |
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243 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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244 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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245 | CALL MPI_ALLREDUCE( sums_l(nzb,32,0), sums(nzb,32), nzt+2-nzb, & |
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246 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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247 | |
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248 | #else |
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249 | sums(:,8) = sums_l(:,8,0) |
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250 | sums(:,30) = sums_l(:,30,0) |
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251 | sums(:,31) = sums_l(:,31,0) |
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252 | sums(:,32) = sums_l(:,32,0) |
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253 | #endif |
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254 | |
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255 | ! |
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256 | !-- Final values are obtained by division by the total number of grid |
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257 | !-- points used for the summation. |
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258 | hom(:,1,8,0) = sums(:,8) / ngp_2dh_outer(:,0) ! e |
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259 | hom(:,1,30,0) = sums(:,30) / ngp_2dh_outer(:,0) ! u*2 |
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260 | hom(:,1,31,0) = sums(:,31) / ngp_2dh_outer(:,0) ! v*2 |
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261 | hom(:,1,32,0) = sums(:,32) / ngp_2dh_outer(:,0) ! w*2 |
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262 | |
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263 | ENDIF |
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264 | |
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265 | END SUBROUTINE lpm_init_sgs_tke |
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