1 | MODULE nudge_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: nudging.f90 1252 2013-11-07 08:15:25Z heinze $ |
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27 | ! |
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28 | ! 1251 2013-11-07 08:14:30Z heinze |
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29 | ! bugfix: calculate dtm and dtp also in vector version |
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30 | ! |
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31 | ! 1249 2013-11-06 10:45:47Z heinze |
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32 | ! remove call of user module |
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33 | ! reformatting |
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34 | ! |
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35 | ! 1241 2013-10-30 11:36:58Z heinze |
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36 | ! Initial revision |
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37 | ! |
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38 | ! Description: |
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39 | ! ------------ |
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40 | ! Nudges u, v, pt and q to given profiles on a relaxation timescale tnudge. |
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41 | ! Profiles are read in from NUDGIN_DATA. Code is based on Neggers et al. (2012) |
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42 | ! and also part of DALES and UCLA-LES. |
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43 | !--------------------------------------------------------------------------------! |
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44 | |
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45 | PRIVATE |
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46 | PUBLIC init_nudge, nudge |
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47 | SAVE |
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48 | |
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49 | INTERFACE nudge |
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50 | MODULE PROCEDURE nudge |
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51 | MODULE PROCEDURE nudge_ij |
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52 | END INTERFACE nudge |
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53 | |
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54 | CONTAINS |
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55 | |
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56 | SUBROUTINE init_nudge |
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57 | |
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58 | USE arrays_3d |
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59 | USE control_parameters |
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60 | USE cpulog |
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61 | USE indices |
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62 | USE interfaces |
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63 | USE pegrid |
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64 | |
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65 | IMPLICIT NONE |
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66 | |
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67 | INTEGER :: finput = 90, ierrn, k, t |
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68 | |
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69 | CHARACTER(1) :: hash |
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70 | REAL :: highheight, highqnudge, highptnudge, highunudge, highvnudge, & |
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71 | highwnudge, hightnudge |
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72 | REAL :: lowheight, lowqnudge, lowptnudge, lowunudge, lowvnudge, & |
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73 | lowwnudge, lowtnudge |
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74 | REAL :: fac |
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75 | |
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76 | ALLOCATE( ptnudge(nzb:nzt+1,1:ntnudge), qnudge(nzb:nzt+1,1:ntnudge), & |
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77 | tnudge(nzb:nzt+1,1:ntnudge), unudge(nzb:nzt+1,1:ntnudge), & |
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78 | vnudge(nzb:nzt+1,1:ntnudge), wnudge(nzb:nzt+1,1:ntnudge) ) |
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79 | |
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80 | ALLOCATE( timenudge(0:ntnudge) ) |
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81 | |
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82 | |
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83 | ptnudge = 0.0; qnudge = 0.0; tnudge = 0.0; unudge = 0.0 |
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84 | vnudge = 0.0; wnudge = 0.0; timenudge = 0.0 |
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85 | |
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86 | t = 0 |
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87 | OPEN ( finput, FILE='NUDGING_DATA', STATUS='OLD', & |
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88 | FORM='FORMATTED', IOSTAT=ierrn ) |
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89 | |
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90 | IF ( ierrn /= 0 ) THEN |
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91 | message_string = 'file NUDGING_DATA does not exist' |
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92 | CALL message( 'nudging', 'PA0365', 1, 2, 0, 6, 0 ) |
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93 | ENDIF |
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94 | |
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95 | ierrn = 0 |
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96 | |
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97 | rloop:DO |
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98 | t = t + 1 |
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99 | hash = "#" |
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100 | ierrn = 1 ! not zero |
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101 | ! |
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102 | !-- Search for the next line consisting of "# time", |
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103 | !-- from there onwards the profiles will be read |
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104 | DO WHILE ( .NOT. ( hash == "#" .AND. ierrn == 0 ) ) |
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105 | |
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106 | READ ( finput, *, IOSTAT=ierrn ) hash, timenudge(t) |
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107 | IF ( ierrn < 0 ) EXIT rloop |
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108 | |
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109 | ENDDO |
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110 | |
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111 | ierrn = 0 |
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112 | READ ( finput, *, IOSTAT=ierrn ) lowheight, lowtnudge, lowunudge, & |
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113 | lowvnudge, lowwnudge , lowptnudge, & |
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114 | lowqnudge |
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115 | |
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116 | IF ( ierrn /= 0 ) THEN |
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117 | message_string = 'errors in file NUDGING_DATA' |
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118 | CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 ) |
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119 | ENDIF |
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120 | |
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121 | ierrn = 0 |
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122 | READ ( finput, *, IOSTAT=ierrn ) highheight, hightnudge, highunudge, & |
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123 | highvnudge, highwnudge , highptnudge, & |
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124 | highqnudge |
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125 | |
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126 | IF ( ierrn /= 0 ) THEN |
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127 | message_string = 'errors in file NUDGING_DATA' |
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128 | CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 ) |
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129 | ENDIF |
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130 | |
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131 | DO k = nzb, nzt+1 |
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132 | IF ( highheight < zu(k) ) THEN |
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133 | lowheight = highheight |
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134 | lowtnudge = hightnudge |
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135 | lowunudge = highunudge |
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136 | lowvnudge = highvnudge |
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137 | lowwnudge = highwnudge |
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138 | lowptnudge = highptnudge |
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139 | lowqnudge = highqnudge |
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140 | |
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141 | ierrn = 0 |
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142 | READ ( finput, *, IOSTAT=ierrn ) highheight , hightnudge , & |
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143 | highunudge , highvnudge , & |
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144 | highwnudge , highptnudge, & |
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145 | highqnudge |
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146 | IF (ierrn /= 0 ) THEN |
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147 | message_string = 'errors in file NUDGING_DATA' |
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148 | CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 ) |
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149 | ENDIF |
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150 | ENDIF |
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151 | |
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152 | ! |
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153 | !-- Interpolation of prescribed profiles in space |
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154 | |
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155 | fac = ( highheight - zu(k) ) / ( highheight - lowheight ) |
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156 | |
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157 | tnudge(k,t) = fac * lowtnudge + ( 1 - fac ) * hightnudge |
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158 | unudge(k,t) = fac * lowunudge + ( 1 - fac ) * highunudge |
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159 | vnudge(k,t) = fac * lowvnudge + ( 1 - fac ) * highvnudge |
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160 | wnudge(k,t) = fac * lowwnudge + ( 1 - fac ) * highwnudge |
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161 | ptnudge(k,t) = fac * lowptnudge + ( 1 - fac ) * highptnudge |
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162 | qnudge(k,t) = fac * lowqnudge + ( 1 - fac ) * highqnudge |
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163 | ENDDO |
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164 | |
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165 | ENDDO rloop |
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166 | |
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167 | CLOSE ( finput ) |
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168 | |
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169 | ! |
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170 | !-- Prevent nudging if nudging profiles exhibt too small values |
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171 | !-- not used so far |
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172 | lptnudge = ANY( ABS( ptnudge ) > 1e-8 ) |
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173 | lqnudge = ANY( ABS( qnudge ) > 1e-8 ) |
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174 | lunudge = ANY( ABS( unudge ) > 1e-8 ) |
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175 | lvnudge = ANY( ABS( vnudge ) > 1e-8 ) |
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176 | lwnudge = ANY( ABS( wnudge ) > 1e-8 ) |
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177 | |
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178 | END SUBROUTINE init_nudge |
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179 | |
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180 | !------------------------------------------------------------------------------! |
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181 | ! Call for all grid points |
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182 | !------------------------------------------------------------------------------! |
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183 | SUBROUTINE nudge ( time, prog_var ) |
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184 | |
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185 | USE arrays_3d |
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186 | USE buoyancy_mod |
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187 | USE control_parameters |
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188 | USE cpulog |
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189 | USE indices |
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190 | USE interfaces |
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191 | USE pegrid |
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192 | USE statistics |
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193 | |
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194 | IMPLICIT NONE |
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195 | |
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196 | CHARACTER (LEN=*) :: prog_var |
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197 | |
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198 | REAL :: currtnudge, dtm, dtp, time |
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199 | |
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200 | INTEGER :: i, j, k, t |
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201 | |
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202 | |
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203 | t = 1 |
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204 | DO WHILE ( time > timenudge(t) ) |
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205 | t = t+1 |
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206 | ENDDO |
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207 | IF ( time /= timenudge(1) ) THEN |
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208 | t = t-1 |
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209 | ENDIF |
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210 | |
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211 | dtm = ( time - timenudge(t) ) / ( timenudge(t+1) - timenudge(t) ) |
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212 | dtp = ( timenudge(t+1) - time ) / ( timenudge(t+1) - timenudge(t) ) |
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213 | |
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214 | SELECT CASE ( prog_var ) |
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215 | |
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216 | CASE ( 'u' ) |
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217 | |
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218 | CALL calc_mean_profile( u, 1, 'nudging' ) |
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219 | |
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220 | DO i = nxl, nxr |
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221 | DO j = nys, nyn |
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222 | DO k = nzb_u_inner(j,i)+1, nzt |
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223 | |
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224 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + & |
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225 | tnudge(k,t+1) * dtm ) |
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226 | |
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227 | |
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228 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,1,0) - & |
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229 | ( unudge(k,t) * dtp + & |
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230 | unudge(k,t+1) * dtm ) ) / currtnudge |
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231 | ENDDO |
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232 | ENDDO |
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233 | ENDDO |
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234 | |
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235 | CASE ( 'v' ) |
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236 | |
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237 | CALL calc_mean_profile( v, 2, 'nudging' ) |
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238 | |
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239 | DO i = nxl, nxr |
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240 | DO j = nys, nyn |
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241 | DO k = nzb_u_inner(j,i)+1, nzt |
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242 | |
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243 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + & |
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244 | tnudge(k,t+1) * dtm ) |
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245 | |
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246 | |
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247 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,2,0) - & |
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248 | ( vnudge(k,t) * dtp + & |
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249 | vnudge(k,t+1) * dtm ) ) / currtnudge |
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250 | ENDDO |
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251 | ENDDO |
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252 | ENDDO |
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253 | |
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254 | CASE ( 'pt' ) |
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255 | |
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256 | CALL calc_mean_profile( v, 4, 'nudging' ) |
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257 | |
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258 | DO i = nxl, nxr |
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259 | DO j = nys, nyn |
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260 | DO k = nzb_u_inner(j,i)+1, nzt |
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261 | |
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262 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + & |
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263 | tnudge(k,t+1) * dtm ) |
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264 | |
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265 | |
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266 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,4,0) - & |
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267 | ( ptnudge(k,t) * dtp + & |
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268 | ptnudge(k,t+1) * dtm ) ) / currtnudge |
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269 | ENDDO |
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270 | ENDDO |
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271 | ENDDO |
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272 | |
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273 | CASE ( 'q' ) |
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274 | |
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275 | CALL calc_mean_profile( v, 41, 'nudging' ) |
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276 | |
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277 | DO i = nxl, nxr |
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278 | DO j = nys, nyn |
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279 | DO k = nzb_u_inner(j,i)+1, nzt |
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280 | |
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281 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + & |
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282 | tnudge(k,t+1) * dtm ) |
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283 | |
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284 | |
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285 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,41,0) - & |
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286 | ( qnudge(k,t) * dtp + & |
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287 | qnudge(k,t+1) * dtm ) ) / currtnudge |
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288 | ENDDO |
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289 | ENDDO |
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290 | ENDDO |
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291 | |
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292 | CASE DEFAULT |
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293 | message_string = 'unknown prognostic variable "' // prog_var // '"' |
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294 | CALL message( 'nudge', 'PA0367', 1, 2, 0, 6, 0 ) |
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295 | |
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296 | END SELECT |
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297 | |
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298 | END SUBROUTINE nudge |
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299 | |
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300 | |
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301 | !------------------------------------------------------------------------------! |
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302 | ! Call for grid point i,j |
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303 | !------------------------------------------------------------------------------! |
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304 | |
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305 | SUBROUTINE nudge_ij( i, j, time, prog_var ) |
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306 | |
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307 | USE arrays_3d |
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308 | USE buoyancy_mod |
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309 | USE control_parameters |
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310 | USE cpulog |
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311 | USE indices |
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312 | USE interfaces |
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313 | USE pegrid |
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314 | USE statistics |
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315 | |
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316 | IMPLICIT NONE |
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317 | |
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318 | CHARACTER (LEN=*) :: prog_var |
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319 | |
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320 | REAL :: currtnudge, dtm, dtp, time |
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321 | |
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322 | INTEGER :: i, j, k, t |
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323 | |
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324 | |
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325 | t = 1 |
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326 | DO WHILE ( time > timenudge(t) ) |
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327 | t = t+1 |
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328 | ENDDO |
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329 | IF ( time /= timenudge(1) ) THEN |
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330 | t = t-1 |
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331 | ENDIF |
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332 | |
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333 | dtm = ( time - timenudge(t) ) / ( timenudge(t+1) - timenudge(t) ) |
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334 | dtp = ( timenudge(t+1) - time ) / ( timenudge(t+1) - timenudge(t) ) |
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335 | |
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336 | SELECT CASE ( prog_var ) |
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337 | |
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338 | CASE ( 'u' ) |
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339 | |
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340 | CALL calc_mean_profile( u, 1, 'nudging' ) |
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341 | |
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342 | DO k = nzb_u_inner(j,i)+1, nzt |
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343 | |
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344 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm ) |
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345 | |
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346 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,1,0) - & |
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347 | ( unudge(k,t) * dtp + & |
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348 | unudge(k,t+1) * dtm ) ) / currtnudge |
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349 | ENDDO |
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350 | |
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351 | CASE ( 'v' ) |
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352 | |
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353 | CALL calc_mean_profile( v, 2, 'nudging' ) |
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354 | |
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355 | DO k = nzb_u_inner(j,i)+1, nzt |
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356 | |
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357 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm ) |
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358 | |
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359 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,2,0) - & |
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360 | ( vnudge(k,t) * dtp + & |
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361 | vnudge(k,t+1) * dtm ) ) / currtnudge |
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362 | ENDDO |
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363 | |
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364 | |
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365 | CASE ( 'pt' ) |
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366 | |
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367 | CALL calc_mean_profile( pt, 4, 'nudging' ) |
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368 | |
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369 | DO k = nzb_u_inner(j,i)+1, nzt |
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370 | |
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371 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm ) |
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372 | |
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373 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,4,0) - & |
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374 | ( ptnudge(k,t) * dtp + & |
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375 | ptnudge(k,t+1) * dtm ) ) / currtnudge |
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376 | ENDDO |
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377 | |
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378 | |
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379 | CASE ( 'q' ) |
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380 | |
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381 | CALL calc_mean_profile( q, 41, 'nudging' ) |
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382 | |
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383 | DO k = nzb_u_inner(j,i)+1, nzt |
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384 | |
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385 | currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm ) |
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386 | |
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387 | tend(k,j,i) = tend(k,j,i) - ( hom(k,1,41,0) - & |
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388 | ( qnudge(k,t) * dtp + & |
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389 | qnudge(k,t+1) * dtm ) ) / currtnudge |
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390 | ENDDO |
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391 | |
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392 | CASE DEFAULT |
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393 | message_string = 'unknown prognostic variable "' // prog_var // '"' |
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394 | CALL message( 'nudge', 'PA0367', 1, 2, 0, 6, 0 ) |
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395 | |
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396 | END SELECT |
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397 | |
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398 | |
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399 | END SUBROUTINE nudge_ij |
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400 | |
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401 | END MODULE nudge_mod |
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