1 | !> @file lpm_init.f90 |
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2 | !------------------------------------------------------------------------------! |
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3 | ! This file is part of the PALM model system. |
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4 | ! |
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5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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6 | ! terms of the GNU General Public License as published by the Free Software |
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7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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8 | ! version. |
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9 | ! |
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10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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13 | ! |
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14 | ! You should have received a copy of the GNU General Public License along with |
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15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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16 | ! |
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17 | ! Copyright 1997-2019 Leibniz Universitaet Hannover |
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18 | !------------------------------------------------------------------------------! |
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19 | ! |
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20 | ! Current revisions: |
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21 | ! ----------------- |
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22 | ! |
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23 | ! |
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24 | ! Former revisions: |
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25 | ! ----------------- |
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26 | ! $Id: lpm_init.f90 3981 2019-05-15 14:43:01Z monakurppa $ |
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27 | ! Bugfix in particle nesting, initialize TKE gradient with zero |
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28 | ! |
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29 | ! 3655 2019-01-07 16:51:22Z knoop |
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30 | ! Changed number concentration unit to SI standard |
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31 | ! |
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32 | ! 3560 2018-11-23 09:20:21Z raasch |
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33 | ! set the first particle release time |
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34 | ! |
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35 | ! 3524 2018-11-14 13:36:44Z raasch |
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36 | ! added missing working precision |
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37 | ! |
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38 | ! 3361 2018-10-16 20:39:37Z knoop |
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39 | ! ocean renamed ocean_mode |
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40 | ! |
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41 | ! 3274 2018-09-24 15:42:55Z knoop |
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42 | ! Modularization of all bulk cloud physics code components |
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43 | ! |
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44 | ! 3241 2018-09-12 15:02:00Z raasch |
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45 | ! unused variables removed |
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46 | ! |
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47 | ! 3065 2018-06-12 07:03:02Z Giersch |
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48 | ! dz was replaced by dzw or dz(1) to allow for right vertical stretching |
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49 | ! |
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50 | ! 3049 2018-05-29 13:52:36Z Giersch |
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51 | ! Error messages revised |
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52 | ! |
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53 | ! 3045 2018-05-28 07:55:41Z Giersch |
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54 | ! Error message revised |
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55 | ! |
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56 | ! 3039 2018-05-24 13:13:11Z schwenkel |
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57 | ! bugfix for lcm with grid stretching |
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58 | ! |
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59 | ! 2967 2018-04-13 11:22:08Z raasch |
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60 | ! nesting routine is only called if nesting is switched on |
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61 | ! |
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62 | ! 2954 2018-04-09 14:35:46Z schwenkel |
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63 | ! Bugfix for particle initialization in case of ocean |
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64 | ! |
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65 | ! 2801 2018-02-14 16:01:55Z thiele |
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66 | ! Introduce particle transfer in nested models. |
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67 | ! |
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68 | ! 2718 2018-01-02 08:49:38Z maronga |
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69 | ! Corrected "Former revisions" section |
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70 | ! |
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71 | ! 2701 2017-12-15 15:40:50Z suehring |
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72 | ! Changes from last commit documented |
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73 | ! |
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74 | ! 2698 2017-12-14 18:46:24Z suehring |
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75 | ! Grid indices passed to lpm_boundary_conds. (responsible Philipp Thiele) |
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76 | ! |
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77 | ! 2696 2017-12-14 17:12:51Z kanani |
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78 | ! Change in file header (GPL part) |
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79 | ! |
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80 | ! 2628 2017-11-20 12:40:38Z schwenkel |
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81 | ! Enabled particle advection with grid stretching. |
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82 | ! |
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83 | ! 2608 2017-11-13 14:04:26Z schwenkel |
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84 | ! Calculation of magnus equation in external module (diagnostic_quantities_mod). |
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85 | ! |
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86 | ! 2606 2017-11-10 10:36:31Z schwenkel |
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87 | ! Changed particle box locations: center of particle box now coincides |
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88 | ! with scalar grid point of same index. |
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89 | ! Renamed module and subroutines: lpm_pack_arrays_mod -> lpm_pack_and_sort_mod |
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90 | ! lpm_pack_all_arrays -> lpm_sort_in_subboxes, lpm_pack_arrays -> lpm_pack |
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91 | ! lpm_sort -> lpm_sort_timeloop_done |
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92 | ! |
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93 | ! 2375 2017-08-29 14:10:28Z schwenkel |
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94 | ! Initialization of chemical aerosol composition |
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95 | ! |
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96 | ! 2346 2017-08-09 16:39:17Z suehring |
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97 | ! Bugfix, correct determination of topography top index |
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98 | ! |
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99 | ! 2318 2017-07-20 17:27:44Z suehring |
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100 | ! Get topography top index via Function call |
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101 | ! |
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102 | ! 2317 2017-07-20 17:27:19Z suehring |
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103 | ! Extended particle data type. Aerosol initialization improved. |
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104 | ! |
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105 | ! 2305 2017-07-06 11:18:47Z hoffmann |
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106 | ! Improved calculation of particle IDs. |
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107 | ! |
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108 | ! 2274 2017-06-09 13:27:48Z Giersch |
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109 | ! Changed error messages |
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110 | ! |
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111 | ! 2265 2017-06-08 16:58:28Z schwenkel |
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112 | ! Unused variables removed. |
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113 | ! |
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114 | ! 2263 2017-06-08 14:59:01Z schwenkel |
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115 | ! Implemented splitting and merging algorithm |
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116 | ! |
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117 | ! 2233 2017-05-30 18:08:54Z suehring |
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118 | ! |
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119 | ! 2232 2017-05-30 17:47:52Z suehring |
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120 | ! Adjustments according to new topography realization |
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121 | ! |
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122 | ! |
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123 | ! 2223 2017-05-15 16:38:09Z suehring |
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124 | ! Add check for particle release at model top |
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125 | ! |
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126 | ! 2182 2017-03-17 14:27:40Z schwenkel |
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127 | ! Added parameters for simplified particle initialization. |
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128 | ! |
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129 | ! 2122 2017-01-18 12:22:54Z hoffmann |
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130 | ! Improved initialization of equilibrium aerosol radii |
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131 | ! Calculation of particle ID |
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132 | ! |
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133 | ! 2000 2016-08-20 18:09:15Z knoop |
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134 | ! Forced header and separation lines into 80 columns |
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135 | ! |
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136 | ! 2016-06-09 16:25:25Z suehring |
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137 | ! Bugfix in determining initial particle height and grid index in case of |
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138 | ! seed_follows_topography. |
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139 | ! Bugfix concerning random positions, ensure that particles do not move more |
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140 | ! than one grid length. |
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141 | ! Bugfix logarithmic interpolation. |
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142 | ! Initial setting of sgs_wf_part. |
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143 | ! |
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144 | ! 1890 2016-04-22 08:52:11Z hoffmann |
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145 | ! Initialization of aerosol equilibrium radius not possible in supersaturated |
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146 | ! environments. Therefore, a maximum supersaturation of -1 % is assumed during |
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147 | ! initialization. |
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148 | ! |
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149 | ! 1873 2016-04-18 14:50:06Z maronga |
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150 | ! Module renamed (removed _mod |
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151 | ! |
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152 | ! 1871 2016-04-15 11:46:09Z hoffmann |
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153 | ! Initialization of aerosols added. |
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154 | ! |
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155 | ! 1850 2016-04-08 13:29:27Z maronga |
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156 | ! Module renamed |
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157 | ! |
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158 | ! 1831 2016-04-07 13:15:51Z hoffmann |
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159 | ! curvature_solution_effects moved to particle_attributes |
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160 | ! |
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161 | ! 1822 2016-04-07 07:49:42Z hoffmann |
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162 | ! Unused variables removed. |
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163 | ! |
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164 | ! 1783 2016-03-06 18:36:17Z raasch |
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165 | ! netcdf module added |
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166 | ! |
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167 | ! 1725 2015-11-17 13:01:51Z hoffmann |
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168 | ! Bugfix: Processor-dependent seed for random function is generated before it is |
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169 | ! used. |
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170 | ! |
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171 | ! 1691 2015-10-26 16:17:44Z maronga |
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172 | ! Renamed prandtl_layer to constant_flux_layer. |
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173 | ! |
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174 | ! 1685 2015-10-08 07:32:13Z raasch |
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175 | ! bugfix concerning vertical index offset in case of ocean |
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176 | ! |
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177 | ! 1682 2015-10-07 23:56:08Z knoop |
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178 | ! Code annotations made doxygen readable |
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179 | ! |
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180 | ! 1575 2015-03-27 09:56:27Z raasch |
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181 | ! initial vertical particle position is allowed to follow the topography |
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182 | ! |
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183 | ! 1359 2014-04-11 17:15:14Z hoffmann |
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184 | ! New particle structure integrated. |
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185 | ! Kind definition added to all floating point numbers. |
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186 | ! lpm_init changed form a subroutine to a module. |
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187 | ! |
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188 | ! 1327 2014-03-21 11:00:16Z raasch |
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189 | ! -netcdf_output |
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190 | ! |
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191 | ! 1322 2014-03-20 16:38:49Z raasch |
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192 | ! REAL functions provided with KIND-attribute |
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193 | ! |
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194 | ! 1320 2014-03-20 08:40:49Z raasch |
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195 | ! ONLY-attribute added to USE-statements, |
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196 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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197 | ! kinds are defined in new module kinds, |
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198 | ! revision history before 2012 removed, |
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199 | ! comment fields (!:) to be used for variable explanations added to |
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200 | ! all variable declaration statements |
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201 | ! bugfix: #if defined( __parallel ) added |
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202 | ! |
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203 | ! 1314 2014-03-14 18:25:17Z suehring |
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204 | ! Vertical logarithmic interpolation of horizontal particle speed for particles |
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205 | ! between roughness height and first vertical grid level. |
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206 | ! |
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207 | ! 1092 2013-02-02 11:24:22Z raasch |
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208 | ! unused variables removed |
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209 | ! |
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210 | ! 1036 2012-10-22 13:43:42Z raasch |
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211 | ! code put under GPL (PALM 3.9) |
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212 | ! |
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213 | ! 849 2012-03-15 10:35:09Z raasch |
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214 | ! routine renamed: init_particles -> lpm_init |
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215 | ! de_dx, de_dy, de_dz are allocated here (instead of automatic arrays in |
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216 | ! advec_particles), |
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217 | ! sort_particles renamed lpm_sort_arrays, user_init_particles renamed lpm_init |
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218 | ! |
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219 | ! 828 2012-02-21 12:00:36Z raasch |
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220 | ! call of init_kernels, particle feature color renamed class |
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221 | ! |
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222 | ! 824 2012-02-17 09:09:57Z raasch |
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223 | ! particle attributes speed_x|y|z_sgs renamed rvar1|2|3, |
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224 | ! array particles implemented as pointer |
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225 | ! |
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226 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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227 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng for allocation |
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228 | ! of arrays. |
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229 | ! |
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230 | ! Revision 1.1 1999/11/25 16:22:38 raasch |
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231 | ! Initial revision |
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232 | ! |
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233 | ! |
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234 | ! Description: |
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235 | ! ------------ |
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236 | !> This routine initializes a set of particles and their attributes (position, |
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237 | !> radius, ..) which are used by the Lagrangian particle model (see lpm). |
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238 | !------------------------------------------------------------------------------! |
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239 | MODULE lpm_init_mod |
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240 | |
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241 | USE, INTRINSIC :: ISO_C_BINDING |
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242 | |
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243 | USE arrays_3d, & |
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244 | ONLY: de_dx, de_dy, de_dz, dzw, zu, zw |
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245 | |
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246 | USE control_parameters, & |
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247 | ONLY: cloud_droplets, constant_flux_layer, current_timestep_number, & |
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248 | dt_3d, dz, initializing_actions, message_string, ocean_mode, & |
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249 | simulated_time |
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250 | |
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251 | USE grid_variables, & |
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252 | ONLY: ddx, dx, ddy, dy |
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253 | |
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254 | USE indices, & |
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255 | ONLY: nx, nxl, nxlg, nxrg, nxr, ny, nyn, nys, nyng, nysg, nz, nzb, & |
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256 | nzt, wall_flags_0 |
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257 | |
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258 | USE kinds |
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259 | |
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260 | USE lpm_collision_kernels_mod, & |
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261 | ONLY: init_kernels |
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262 | |
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263 | USE netcdf_interface, & |
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264 | ONLY: netcdf_data_format |
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265 | |
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266 | USE particle_attributes, & |
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267 | ONLY: alloc_factor, bc_par_b, bc_par_lr, bc_par_ns, bc_par_t, & |
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268 | block_offset, block_offset_def, collision_kernel, & |
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269 | curvature_solution_effects, density_ratio, grid_particles, & |
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270 | isf,i_splitting_mode, initial_weighting_factor, ibc_par_b, & |
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271 | ibc_par_lr, ibc_par_ns, ibc_par_t, iran_part, & |
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272 | last_particle_release_time, log_z_z0, & |
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273 | max_number_of_particle_groups, min_nr_particle, & |
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274 | number_concentration, & |
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275 | number_particles_per_gridbox, number_of_particles, & |
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276 | number_of_particle_groups, number_of_sublayers, & |
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277 | offset_ocean_nzt, offset_ocean_nzt_m1, & |
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278 | particles, particle_advection_start, particle_groups, & |
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279 | particle_groups_type, particles_per_point, & |
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280 | particle_type, pdx, pdy, pdz, prt_count, psb, psl, psn, psr, & |
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281 | pss, pst, radius, random_start_position, & |
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282 | read_particles_from_restartfile, seed_follows_topography, & |
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283 | sgs_wf_part, sort_count, splitting_function, splitting_mode, & |
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284 | total_number_of_particles, use_sgs_for_particles, & |
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285 | write_particle_statistics, zero_particle, z0_av_global |
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286 | |
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287 | USE pegrid |
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288 | |
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289 | USE random_function_mod, & |
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290 | ONLY: random_function |
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291 | |
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292 | USE surface_mod, & |
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293 | ONLY: get_topography_top_index_ji, surf_def_h, surf_lsm_h, surf_usm_h |
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294 | |
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295 | USE pmc_particle_interface, & |
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296 | ONLY: pmcp_g_init |
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297 | |
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298 | IMPLICIT NONE |
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299 | |
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300 | PRIVATE |
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301 | |
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302 | INTEGER(iwp), PARAMETER :: PHASE_INIT = 1 !< |
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303 | INTEGER(iwp), PARAMETER, PUBLIC :: PHASE_RELEASE = 2 !< |
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304 | |
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305 | INTERFACE lpm_init |
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306 | MODULE PROCEDURE lpm_init |
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307 | END INTERFACE lpm_init |
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308 | |
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309 | INTERFACE lpm_create_particle |
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310 | MODULE PROCEDURE lpm_create_particle |
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311 | END INTERFACE lpm_create_particle |
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312 | |
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313 | PUBLIC lpm_init, lpm_create_particle |
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314 | |
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315 | CONTAINS |
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316 | |
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317 | !------------------------------------------------------------------------------! |
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318 | ! Description: |
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319 | ! ------------ |
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320 | !> @todo Missing subroutine description. |
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321 | !------------------------------------------------------------------------------! |
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322 | SUBROUTINE lpm_init |
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323 | |
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324 | USE lpm_collision_kernels_mod, & |
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325 | ONLY: init_kernels |
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326 | |
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327 | USE pmc_interface, & |
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328 | ONLY: nested_run |
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329 | |
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330 | IMPLICIT NONE |
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331 | |
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332 | INTEGER(iwp) :: i !< |
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333 | INTEGER(iwp) :: j !< |
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334 | INTEGER(iwp) :: k !< |
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335 | |
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336 | REAL(wp) :: div !< |
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337 | REAL(wp) :: height_int !< |
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338 | REAL(wp) :: height_p !< |
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339 | REAL(wp) :: z_p !< |
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340 | REAL(wp) :: z0_av_local !< |
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341 | |
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342 | |
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343 | ! |
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344 | !-- In case of oceans runs, the vertical index calculations need an offset, |
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345 | !-- because otherwise the k indices will become negative |
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346 | IF ( ocean_mode ) THEN |
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347 | offset_ocean_nzt = nzt |
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348 | offset_ocean_nzt_m1 = nzt - 1 |
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349 | ENDIF |
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350 | |
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351 | ! |
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352 | !-- Define block offsets for dividing a gridcell in 8 sub cells |
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353 | !-- See documentation for List of subgrid boxes |
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354 | !-- See pack_and_sort in lpm_pack_arrays.f90 for assignment of the subgrid boxes |
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355 | block_offset(0) = block_offset_def ( 0, 0, 0) |
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356 | block_offset(1) = block_offset_def ( 0, 0,-1) |
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357 | block_offset(2) = block_offset_def ( 0,-1, 0) |
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358 | block_offset(3) = block_offset_def ( 0,-1,-1) |
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359 | block_offset(4) = block_offset_def (-1, 0, 0) |
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360 | block_offset(5) = block_offset_def (-1, 0,-1) |
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361 | block_offset(6) = block_offset_def (-1,-1, 0) |
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362 | block_offset(7) = block_offset_def (-1,-1,-1) |
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363 | ! |
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364 | !-- Check the number of particle groups. |
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365 | IF ( number_of_particle_groups > max_number_of_particle_groups ) THEN |
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366 | WRITE( message_string, * ) 'max_number_of_particle_groups =', & |
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367 | max_number_of_particle_groups , & |
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368 | '&number_of_particle_groups reset to ', & |
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369 | max_number_of_particle_groups |
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370 | CALL message( 'lpm_init', 'PA0213', 0, 1, 0, 6, 0 ) |
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371 | number_of_particle_groups = max_number_of_particle_groups |
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372 | ENDIF |
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373 | ! |
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374 | !-- Check if downward-facing walls exist. This case, reflection boundary |
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375 | !-- conditions (as well as subgrid-scale velocities) may do not work |
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376 | !-- propably (not realized so far). |
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377 | IF ( surf_def_h(1)%ns >= 1 ) THEN |
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378 | WRITE( message_string, * ) 'Overhanging topography do not work '// & |
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379 | 'with particles' |
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380 | CALL message( 'lpm_init', 'PA0212', 0, 1, 0, 6, 0 ) |
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381 | |
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382 | ENDIF |
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383 | |
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384 | ! |
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385 | !-- Set default start positions, if necessary |
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386 | IF ( psl(1) == 9999999.9_wp ) psl(1) = 0.0_wp |
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387 | IF ( psr(1) == 9999999.9_wp ) psr(1) = ( nx +1 ) * dx |
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388 | IF ( pss(1) == 9999999.9_wp ) pss(1) = 0.0_wp |
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389 | IF ( psn(1) == 9999999.9_wp ) psn(1) = ( ny +1 ) * dy |
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390 | IF ( psb(1) == 9999999.9_wp ) psb(1) = zu(nz/2) |
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391 | IF ( pst(1) == 9999999.9_wp ) pst(1) = psb(1) |
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392 | |
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393 | IF ( pdx(1) == 9999999.9_wp .OR. pdx(1) == 0.0_wp ) pdx(1) = dx |
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394 | IF ( pdy(1) == 9999999.9_wp .OR. pdy(1) == 0.0_wp ) pdy(1) = dy |
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395 | IF ( pdz(1) == 9999999.9_wp .OR. pdz(1) == 0.0_wp ) pdz(1) = zu(2) - zu(1) |
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396 | |
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397 | ! |
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398 | !-- If number_particles_per_gridbox is set, the parametres pdx, pdy and pdz are |
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399 | !-- calculated diagnostically. Therfore an isotropic distribution is prescribed. |
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400 | IF ( number_particles_per_gridbox /= -1 .AND. & |
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401 | number_particles_per_gridbox >= 1 ) THEN |
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402 | pdx(1) = (( dx * dy * ( zu(2) - zu(1) ) ) / & |
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403 | REAL(number_particles_per_gridbox))**0.3333333_wp |
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404 | ! |
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405 | !-- Ensure a smooth value (two significant digits) of distance between |
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406 | !-- particles (pdx, pdy, pdz). |
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407 | div = 1000.0_wp |
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408 | DO WHILE ( pdx(1) < div ) |
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409 | div = div / 10.0_wp |
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410 | ENDDO |
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411 | pdx(1) = NINT( pdx(1) * 100.0_wp / div ) * div / 100.0_wp |
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412 | pdy(1) = pdx(1) |
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413 | pdz(1) = pdx(1) |
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414 | |
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415 | ENDIF |
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416 | |
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417 | DO j = 2, number_of_particle_groups |
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418 | IF ( psl(j) == 9999999.9_wp ) psl(j) = psl(j-1) |
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419 | IF ( psr(j) == 9999999.9_wp ) psr(j) = psr(j-1) |
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420 | IF ( pss(j) == 9999999.9_wp ) pss(j) = pss(j-1) |
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421 | IF ( psn(j) == 9999999.9_wp ) psn(j) = psn(j-1) |
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422 | IF ( psb(j) == 9999999.9_wp ) psb(j) = psb(j-1) |
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423 | IF ( pst(j) == 9999999.9_wp ) pst(j) = pst(j-1) |
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424 | IF ( pdx(j) == 9999999.9_wp .OR. pdx(j) == 0.0_wp ) pdx(j) = pdx(j-1) |
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425 | IF ( pdy(j) == 9999999.9_wp .OR. pdy(j) == 0.0_wp ) pdy(j) = pdy(j-1) |
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426 | IF ( pdz(j) == 9999999.9_wp .OR. pdz(j) == 0.0_wp ) pdz(j) = pdz(j-1) |
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427 | ENDDO |
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428 | |
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429 | ! |
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430 | !-- Allocate arrays required for calculating particle SGS velocities. |
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431 | !-- Initialize prefactor required for stoachastic Weil equation. |
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432 | IF ( use_sgs_for_particles .AND. .NOT. cloud_droplets ) THEN |
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433 | ALLOCATE( de_dx(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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434 | de_dy(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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435 | de_dz(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
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436 | de_dx = 0.0_wp |
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437 | de_dy = 0.0_wp |
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438 | de_dz = 0.0_wp |
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439 | |
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440 | sgs_wf_part = 1.0_wp / 3.0_wp |
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441 | ENDIF |
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442 | |
---|
443 | ! |
---|
444 | !-- Allocate array required for logarithmic vertical interpolation of |
---|
445 | !-- horizontal particle velocities between the surface and the first vertical |
---|
446 | !-- grid level. In order to avoid repeated CPU cost-intensive CALLS of |
---|
447 | !-- intrinsic FORTRAN procedure LOG(z/z0), LOG(z/z0) is precalculated for |
---|
448 | !-- several heights. Splitting into 20 sublayers turned out to be sufficient. |
---|
449 | !-- To obtain exact height levels of particles, linear interpolation is applied |
---|
450 | !-- (see lpm_advec.f90). |
---|
451 | IF ( constant_flux_layer ) THEN |
---|
452 | |
---|
453 | ALLOCATE ( log_z_z0(0:number_of_sublayers) ) |
---|
454 | z_p = zu(nzb+1) - zw(nzb) |
---|
455 | |
---|
456 | ! |
---|
457 | !-- Calculate horizontal mean value of z0 used for logartihmic |
---|
458 | !-- interpolation. Note: this is not exact for heterogeneous z0. |
---|
459 | !-- However, sensitivity studies showed that the effect is |
---|
460 | !-- negligible. |
---|
461 | z0_av_local = SUM( surf_def_h(0)%z0 ) + SUM( surf_lsm_h%z0 ) + & |
---|
462 | SUM( surf_usm_h%z0 ) |
---|
463 | z0_av_global = 0.0_wp |
---|
464 | |
---|
465 | #if defined( __parallel ) |
---|
466 | CALL MPI_ALLREDUCE(z0_av_local, z0_av_global, 1, MPI_REAL, MPI_SUM, & |
---|
467 | comm2d, ierr ) |
---|
468 | #else |
---|
469 | z0_av_global = z0_av_local |
---|
470 | #endif |
---|
471 | |
---|
472 | z0_av_global = z0_av_global / ( ( ny + 1 ) * ( nx + 1 ) ) |
---|
473 | ! |
---|
474 | !-- Horizontal wind speed is zero below and at z0 |
---|
475 | log_z_z0(0) = 0.0_wp |
---|
476 | ! |
---|
477 | !-- Calculate vertical depth of the sublayers |
---|
478 | height_int = ( z_p - z0_av_global ) / REAL( number_of_sublayers, KIND=wp ) |
---|
479 | ! |
---|
480 | !-- Precalculate LOG(z/z0) |
---|
481 | height_p = z0_av_global |
---|
482 | DO k = 1, number_of_sublayers |
---|
483 | |
---|
484 | height_p = height_p + height_int |
---|
485 | log_z_z0(k) = LOG( height_p / z0_av_global ) |
---|
486 | |
---|
487 | ENDDO |
---|
488 | |
---|
489 | ENDIF |
---|
490 | |
---|
491 | ! |
---|
492 | !-- Check boundary condition and set internal variables |
---|
493 | SELECT CASE ( bc_par_b ) |
---|
494 | |
---|
495 | CASE ( 'absorb' ) |
---|
496 | ibc_par_b = 1 |
---|
497 | |
---|
498 | CASE ( 'reflect' ) |
---|
499 | ibc_par_b = 2 |
---|
500 | |
---|
501 | CASE DEFAULT |
---|
502 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
503 | 'bc_par_b = "', TRIM( bc_par_b ), '"' |
---|
504 | CALL message( 'lpm_init', 'PA0217', 1, 2, 0, 6, 0 ) |
---|
505 | |
---|
506 | END SELECT |
---|
507 | SELECT CASE ( bc_par_t ) |
---|
508 | |
---|
509 | CASE ( 'absorb' ) |
---|
510 | ibc_par_t = 1 |
---|
511 | |
---|
512 | CASE ( 'reflect' ) |
---|
513 | ibc_par_t = 2 |
---|
514 | |
---|
515 | CASE ( 'nested' ) |
---|
516 | ibc_par_t = 3 |
---|
517 | |
---|
518 | CASE DEFAULT |
---|
519 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
520 | 'bc_par_t = "', TRIM( bc_par_t ), '"' |
---|
521 | CALL message( 'lpm_init', 'PA0218', 1, 2, 0, 6, 0 ) |
---|
522 | |
---|
523 | END SELECT |
---|
524 | SELECT CASE ( bc_par_lr ) |
---|
525 | |
---|
526 | CASE ( 'cyclic' ) |
---|
527 | ibc_par_lr = 0 |
---|
528 | |
---|
529 | CASE ( 'absorb' ) |
---|
530 | ibc_par_lr = 1 |
---|
531 | |
---|
532 | CASE ( 'reflect' ) |
---|
533 | ibc_par_lr = 2 |
---|
534 | |
---|
535 | CASE ( 'nested' ) |
---|
536 | ibc_par_lr = 3 |
---|
537 | |
---|
538 | CASE DEFAULT |
---|
539 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
540 | 'bc_par_lr = "', TRIM( bc_par_lr ), '"' |
---|
541 | CALL message( 'lpm_init', 'PA0219', 1, 2, 0, 6, 0 ) |
---|
542 | |
---|
543 | END SELECT |
---|
544 | SELECT CASE ( bc_par_ns ) |
---|
545 | |
---|
546 | CASE ( 'cyclic' ) |
---|
547 | ibc_par_ns = 0 |
---|
548 | |
---|
549 | CASE ( 'absorb' ) |
---|
550 | ibc_par_ns = 1 |
---|
551 | |
---|
552 | CASE ( 'reflect' ) |
---|
553 | ibc_par_ns = 2 |
---|
554 | |
---|
555 | CASE ( 'nested' ) |
---|
556 | ibc_par_ns = 3 |
---|
557 | |
---|
558 | CASE DEFAULT |
---|
559 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
560 | 'bc_par_ns = "', TRIM( bc_par_ns ), '"' |
---|
561 | CALL message( 'lpm_init', 'PA0220', 1, 2, 0, 6, 0 ) |
---|
562 | |
---|
563 | END SELECT |
---|
564 | SELECT CASE ( splitting_mode ) |
---|
565 | |
---|
566 | CASE ( 'const' ) |
---|
567 | i_splitting_mode = 1 |
---|
568 | |
---|
569 | CASE ( 'cl_av' ) |
---|
570 | i_splitting_mode = 2 |
---|
571 | |
---|
572 | CASE ( 'gb_av' ) |
---|
573 | i_splitting_mode = 3 |
---|
574 | |
---|
575 | CASE DEFAULT |
---|
576 | WRITE( message_string, * ) 'unknown splitting_mode = "', & |
---|
577 | TRIM( splitting_mode ), '"' |
---|
578 | CALL message( 'lpm_init', 'PA0146', 1, 2, 0, 6, 0 ) |
---|
579 | |
---|
580 | END SELECT |
---|
581 | SELECT CASE ( splitting_function ) |
---|
582 | |
---|
583 | CASE ( 'gamma' ) |
---|
584 | isf = 1 |
---|
585 | |
---|
586 | CASE ( 'log' ) |
---|
587 | isf = 2 |
---|
588 | |
---|
589 | CASE ( 'exp' ) |
---|
590 | isf = 3 |
---|
591 | |
---|
592 | CASE DEFAULT |
---|
593 | WRITE( message_string, * ) 'unknown splitting function = "', & |
---|
594 | TRIM( splitting_function ), '"' |
---|
595 | CALL message( 'lpm_init', 'PA0147', 1, 2, 0, 6, 0 ) |
---|
596 | |
---|
597 | END SELECT |
---|
598 | |
---|
599 | |
---|
600 | ! |
---|
601 | !-- Initialize collision kernels |
---|
602 | IF ( collision_kernel /= 'none' ) CALL init_kernels |
---|
603 | |
---|
604 | ! |
---|
605 | !-- For the first model run of a possible job chain initialize the |
---|
606 | !-- particles, otherwise read the particle data from restart file. |
---|
607 | IF ( TRIM( initializing_actions ) == 'read_restart_data' & |
---|
608 | .AND. read_particles_from_restartfile ) THEN |
---|
609 | |
---|
610 | CALL lpm_read_restart_file |
---|
611 | |
---|
612 | ELSE |
---|
613 | |
---|
614 | ! |
---|
615 | !-- Allocate particle arrays and set attributes of the initial set of |
---|
616 | !-- particles, which can be also periodically released at later times. |
---|
617 | ALLOCATE( prt_count(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
---|
618 | grid_particles(nzb+1:nzt,nys:nyn,nxl:nxr) ) |
---|
619 | |
---|
620 | number_of_particles = 0 |
---|
621 | |
---|
622 | sort_count = 0 |
---|
623 | prt_count = 0 |
---|
624 | |
---|
625 | ! |
---|
626 | !-- initialize counter for particle IDs |
---|
627 | grid_particles%id_counter = 1 |
---|
628 | |
---|
629 | ! |
---|
630 | !-- Initialize all particles with dummy values (otherwise errors may |
---|
631 | !-- occur within restart runs). The reason for this is still not clear |
---|
632 | !-- and may be presumably caused by errors in the respective user-interface. |
---|
633 | zero_particle = particle_type( 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
634 | 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
635 | 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
636 | 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
637 | 0, 0, 0_idp, .FALSE., -1 ) |
---|
638 | |
---|
639 | particle_groups = particle_groups_type( 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp ) |
---|
640 | |
---|
641 | ! |
---|
642 | !-- Set values for the density ratio and radius for all particle |
---|
643 | !-- groups, if necessary |
---|
644 | IF ( density_ratio(1) == 9999999.9_wp ) density_ratio(1) = 0.0_wp |
---|
645 | IF ( radius(1) == 9999999.9_wp ) radius(1) = 0.0_wp |
---|
646 | DO i = 2, number_of_particle_groups |
---|
647 | IF ( density_ratio(i) == 9999999.9_wp ) THEN |
---|
648 | density_ratio(i) = density_ratio(i-1) |
---|
649 | ENDIF |
---|
650 | IF ( radius(i) == 9999999.9_wp ) radius(i) = radius(i-1) |
---|
651 | ENDDO |
---|
652 | |
---|
653 | DO i = 1, number_of_particle_groups |
---|
654 | IF ( density_ratio(i) /= 0.0_wp .AND. radius(i) == 0 ) THEN |
---|
655 | WRITE( message_string, * ) 'particle group #', i, ' has a', & |
---|
656 | 'density ratio /= 0 but radius = 0' |
---|
657 | CALL message( 'lpm_init', 'PA0215', 1, 2, 0, 6, 0 ) |
---|
658 | ENDIF |
---|
659 | particle_groups(i)%density_ratio = density_ratio(i) |
---|
660 | particle_groups(i)%radius = radius(i) |
---|
661 | ENDDO |
---|
662 | |
---|
663 | ! |
---|
664 | !-- Set a seed value for the random number generator to be exclusively |
---|
665 | !-- used for the particle code. The generated random numbers should be |
---|
666 | !-- different on the different PEs. |
---|
667 | iran_part = iran_part + myid |
---|
668 | |
---|
669 | ! |
---|
670 | !-- Create the particle set, and set the initial particles |
---|
671 | CALL lpm_create_particle( phase_init ) |
---|
672 | last_particle_release_time = particle_advection_start |
---|
673 | |
---|
674 | ! |
---|
675 | !-- User modification of initial particles |
---|
676 | CALL user_lpm_init |
---|
677 | |
---|
678 | ! |
---|
679 | !-- Open file for statistical informations about particle conditions |
---|
680 | IF ( write_particle_statistics ) THEN |
---|
681 | CALL check_open( 80 ) |
---|
682 | WRITE ( 80, 8000 ) current_timestep_number, simulated_time, & |
---|
683 | number_of_particles |
---|
684 | CALL close_file( 80 ) |
---|
685 | ENDIF |
---|
686 | |
---|
687 | ENDIF |
---|
688 | |
---|
689 | IF ( nested_run ) CALL pmcp_g_init |
---|
690 | |
---|
691 | ! |
---|
692 | !-- To avoid programm abort, assign particles array to the local version of |
---|
693 | !-- first grid cell |
---|
694 | number_of_particles = prt_count(nzb+1,nys,nxl) |
---|
695 | particles => grid_particles(nzb+1,nys,nxl)%particles(1:number_of_particles) |
---|
696 | ! |
---|
697 | !-- Formats |
---|
698 | 8000 FORMAT (I6,1X,F7.2,4X,I10,71X,I10) |
---|
699 | |
---|
700 | END SUBROUTINE lpm_init |
---|
701 | |
---|
702 | !------------------------------------------------------------------------------! |
---|
703 | ! Description: |
---|
704 | ! ------------ |
---|
705 | !> @todo Missing subroutine description. |
---|
706 | !------------------------------------------------------------------------------! |
---|
707 | SUBROUTINE lpm_create_particle (phase) |
---|
708 | |
---|
709 | USE arrays_3d, & |
---|
710 | ONLY: zw |
---|
711 | USE lpm_exchange_horiz_mod, & |
---|
712 | ONLY: lpm_exchange_horiz, lpm_move_particle, realloc_particles_array |
---|
713 | |
---|
714 | USE lpm_pack_and_sort_mod, & |
---|
715 | ONLY: lpm_sort_in_subboxes |
---|
716 | |
---|
717 | USE particle_attributes, & |
---|
718 | ONLY: deleted_particles |
---|
719 | |
---|
720 | IMPLICIT NONE |
---|
721 | |
---|
722 | INTEGER(iwp) :: alloc_size !< relative increase of allocated memory for particles |
---|
723 | INTEGER(iwp) :: i !< loop variable ( particle groups ) |
---|
724 | INTEGER(iwp) :: ip !< index variable along x |
---|
725 | INTEGER(iwp) :: j !< loop variable ( particles per point ) |
---|
726 | INTEGER(iwp) :: jp !< index variable along y |
---|
727 | INTEGER(iwp) :: k !< index variable along z |
---|
728 | INTEGER(iwp) :: k_surf !< index of surface grid point |
---|
729 | INTEGER(iwp) :: kp !< index variable along z |
---|
730 | INTEGER(iwp) :: loop_stride !< loop variable for initialization |
---|
731 | INTEGER(iwp) :: n !< loop variable ( number of particles ) |
---|
732 | INTEGER(iwp) :: new_size !< new size of allocated memory for particles |
---|
733 | |
---|
734 | INTEGER(iwp), INTENT(IN) :: phase !< mode of inititialization |
---|
735 | |
---|
736 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: local_count !< start address of new particle |
---|
737 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: local_start !< start address of new particle |
---|
738 | |
---|
739 | LOGICAL :: first_stride !< flag for initialization |
---|
740 | |
---|
741 | REAL(wp) :: pos_x !< increment for particle position in x |
---|
742 | REAL(wp) :: pos_y !< increment for particle position in y |
---|
743 | REAL(wp) :: pos_z !< increment for particle position in z |
---|
744 | REAL(wp) :: rand_contr !< dummy argument for random position |
---|
745 | |
---|
746 | TYPE(particle_type),TARGET :: tmp_particle !< temporary particle used for initialization |
---|
747 | |
---|
748 | ! |
---|
749 | !-- Calculate particle positions and store particle attributes, if |
---|
750 | !-- particle is situated on this PE |
---|
751 | DO loop_stride = 1, 2 |
---|
752 | first_stride = (loop_stride == 1) |
---|
753 | IF ( first_stride ) THEN |
---|
754 | local_count = 0 ! count number of particles |
---|
755 | ELSE |
---|
756 | local_count = prt_count ! Start address of new particles |
---|
757 | ENDIF |
---|
758 | |
---|
759 | ! |
---|
760 | !-- Calculate initial_weighting_factor diagnostically |
---|
761 | IF ( number_concentration /= -1.0_wp .AND. number_concentration > 0.0_wp ) THEN |
---|
762 | initial_weighting_factor = number_concentration * & |
---|
763 | pdx(1) * pdy(1) * pdz(1) |
---|
764 | END IF |
---|
765 | |
---|
766 | n = 0 |
---|
767 | DO i = 1, number_of_particle_groups |
---|
768 | |
---|
769 | pos_z = psb(i) |
---|
770 | |
---|
771 | DO WHILE ( pos_z <= pst(i) ) |
---|
772 | |
---|
773 | IF ( pos_z >= zw(0) .AND. pos_z < zw(nzt) ) THEN |
---|
774 | |
---|
775 | |
---|
776 | pos_y = pss(i) |
---|
777 | |
---|
778 | DO WHILE ( pos_y <= psn(i) ) |
---|
779 | |
---|
780 | IF ( pos_y >= nys * dy .AND. & |
---|
781 | pos_y < ( nyn + 1 ) * dy ) THEN |
---|
782 | |
---|
783 | pos_x = psl(i) |
---|
784 | |
---|
785 | xloop: DO WHILE ( pos_x <= psr(i) ) |
---|
786 | |
---|
787 | IF ( pos_x >= nxl * dx .AND. & |
---|
788 | pos_x < ( nxr + 1) * dx ) THEN |
---|
789 | |
---|
790 | DO j = 1, particles_per_point |
---|
791 | |
---|
792 | |
---|
793 | n = n + 1 |
---|
794 | tmp_particle%x = pos_x |
---|
795 | tmp_particle%y = pos_y |
---|
796 | tmp_particle%z = pos_z |
---|
797 | tmp_particle%age = 0.0_wp |
---|
798 | tmp_particle%age_m = 0.0_wp |
---|
799 | tmp_particle%dt_sum = 0.0_wp |
---|
800 | tmp_particle%e_m = 0.0_wp |
---|
801 | tmp_particle%rvar1 = 0.0_wp |
---|
802 | tmp_particle%rvar2 = 0.0_wp |
---|
803 | tmp_particle%rvar3 = 0.0_wp |
---|
804 | tmp_particle%speed_x = 0.0_wp |
---|
805 | tmp_particle%speed_y = 0.0_wp |
---|
806 | tmp_particle%speed_z = 0.0_wp |
---|
807 | tmp_particle%origin_x = pos_x |
---|
808 | tmp_particle%origin_y = pos_y |
---|
809 | tmp_particle%origin_z = pos_z |
---|
810 | IF ( curvature_solution_effects ) THEN |
---|
811 | tmp_particle%aux1 = 0.0_wp ! dry aerosol radius |
---|
812 | tmp_particle%aux2 = dt_3d ! last Rosenbrock timestep |
---|
813 | ELSE |
---|
814 | tmp_particle%aux1 = 0.0_wp ! free to use |
---|
815 | tmp_particle%aux2 = 0.0_wp ! free to use |
---|
816 | ENDIF |
---|
817 | tmp_particle%radius = particle_groups(i)%radius |
---|
818 | tmp_particle%weight_factor = initial_weighting_factor |
---|
819 | tmp_particle%class = 1 |
---|
820 | tmp_particle%group = i |
---|
821 | tmp_particle%id = 0_idp |
---|
822 | tmp_particle%particle_mask = .TRUE. |
---|
823 | tmp_particle%block_nr = -1 |
---|
824 | ! |
---|
825 | !-- Determine the grid indices of the particle position |
---|
826 | ip = INT( tmp_particle%x * ddx ) |
---|
827 | jp = INT( tmp_particle%y * ddy ) |
---|
828 | kp = INT( tmp_particle%z / dz(1) + 1 + offset_ocean_nzt ) |
---|
829 | DO WHILE( zw(kp) < tmp_particle%z ) |
---|
830 | kp = kp + 1 |
---|
831 | ENDDO |
---|
832 | DO WHILE( zw(kp-1) > tmp_particle%z ) |
---|
833 | kp = kp - 1 |
---|
834 | ENDDO |
---|
835 | ! |
---|
836 | !-- Determine surface level. Therefore, check for |
---|
837 | !-- upward-facing wall on w-grid. |
---|
838 | k_surf = get_topography_top_index_ji( jp, ip, 'w' ) |
---|
839 | |
---|
840 | IF ( seed_follows_topography ) THEN |
---|
841 | ! |
---|
842 | !-- Particle height is given relative to topography |
---|
843 | kp = kp + k_surf |
---|
844 | tmp_particle%z = tmp_particle%z + zw(k_surf) |
---|
845 | !-- Skip particle release if particle position is |
---|
846 | !-- above model top, or within topography in case |
---|
847 | !-- of overhanging structures. |
---|
848 | IF ( kp > nzt .OR. & |
---|
849 | .NOT. BTEST( wall_flags_0(kp,jp,ip), 0 ) ) THEN |
---|
850 | pos_x = pos_x + pdx(i) |
---|
851 | CYCLE xloop |
---|
852 | ENDIF |
---|
853 | ! |
---|
854 | !-- Skip particle release if particle position is |
---|
855 | !-- below surface, or within topography in case |
---|
856 | !-- of overhanging structures. |
---|
857 | ELSEIF ( .NOT. seed_follows_topography .AND. & |
---|
858 | tmp_particle%z <= zw(k_surf) .OR. & |
---|
859 | .NOT. BTEST( wall_flags_0(kp,jp,ip), 0 ) )& |
---|
860 | THEN |
---|
861 | pos_x = pos_x + pdx(i) |
---|
862 | CYCLE xloop |
---|
863 | ENDIF |
---|
864 | |
---|
865 | local_count(kp,jp,ip) = local_count(kp,jp,ip) + 1 |
---|
866 | |
---|
867 | IF ( .NOT. first_stride ) THEN |
---|
868 | IF ( ip < nxl .OR. jp < nys .OR. kp < nzb+1 ) THEN |
---|
869 | write(6,*) 'xl ',ip,jp,kp,nxl,nys,nzb+1 |
---|
870 | ENDIF |
---|
871 | IF ( ip > nxr .OR. jp > nyn .OR. kp > nzt ) THEN |
---|
872 | write(6,*) 'xu ',ip,jp,kp,nxr,nyn,nzt |
---|
873 | ENDIF |
---|
874 | grid_particles(kp,jp,ip)%particles(local_count(kp,jp,ip)) = tmp_particle |
---|
875 | |
---|
876 | ENDIF |
---|
877 | ENDDO |
---|
878 | |
---|
879 | ENDIF |
---|
880 | |
---|
881 | pos_x = pos_x + pdx(i) |
---|
882 | |
---|
883 | ENDDO xloop |
---|
884 | |
---|
885 | ENDIF |
---|
886 | |
---|
887 | pos_y = pos_y + pdy(i) |
---|
888 | |
---|
889 | ENDDO |
---|
890 | |
---|
891 | ENDIF |
---|
892 | |
---|
893 | pos_z = pos_z + pdz(i) |
---|
894 | |
---|
895 | ENDDO |
---|
896 | |
---|
897 | ENDDO |
---|
898 | |
---|
899 | IF ( first_stride ) THEN |
---|
900 | DO ip = nxl, nxr |
---|
901 | DO jp = nys, nyn |
---|
902 | DO kp = nzb+1, nzt |
---|
903 | IF ( phase == PHASE_INIT ) THEN |
---|
904 | IF ( local_count(kp,jp,ip) > 0 ) THEN |
---|
905 | alloc_size = MAX( INT( local_count(kp,jp,ip) * & |
---|
906 | ( 1.0_wp + alloc_factor / 100.0_wp ) ), & |
---|
907 | min_nr_particle ) |
---|
908 | ELSE |
---|
909 | alloc_size = min_nr_particle |
---|
910 | ENDIF |
---|
911 | ALLOCATE(grid_particles(kp,jp,ip)%particles(1:alloc_size)) |
---|
912 | DO n = 1, alloc_size |
---|
913 | grid_particles(kp,jp,ip)%particles(n) = zero_particle |
---|
914 | ENDDO |
---|
915 | ELSEIF ( phase == PHASE_RELEASE ) THEN |
---|
916 | IF ( local_count(kp,jp,ip) > 0 ) THEN |
---|
917 | new_size = local_count(kp,jp,ip) + prt_count(kp,jp,ip) |
---|
918 | alloc_size = MAX( INT( new_size * ( 1.0_wp + & |
---|
919 | alloc_factor / 100.0_wp ) ), min_nr_particle ) |
---|
920 | IF( alloc_size > SIZE( grid_particles(kp,jp,ip)%particles) ) THEN |
---|
921 | CALL realloc_particles_array(ip,jp,kp,alloc_size) |
---|
922 | ENDIF |
---|
923 | ENDIF |
---|
924 | ENDIF |
---|
925 | ENDDO |
---|
926 | ENDDO |
---|
927 | ENDDO |
---|
928 | ENDIF |
---|
929 | |
---|
930 | ENDDO |
---|
931 | |
---|
932 | |
---|
933 | |
---|
934 | local_start = prt_count+1 |
---|
935 | prt_count = local_count |
---|
936 | |
---|
937 | ! |
---|
938 | !-- Calculate particle IDs |
---|
939 | DO ip = nxl, nxr |
---|
940 | DO jp = nys, nyn |
---|
941 | DO kp = nzb+1, nzt |
---|
942 | number_of_particles = prt_count(kp,jp,ip) |
---|
943 | IF ( number_of_particles <= 0 ) CYCLE |
---|
944 | particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles) |
---|
945 | |
---|
946 | DO n = local_start(kp,jp,ip), number_of_particles !only new particles |
---|
947 | |
---|
948 | particles(n)%id = 10000_idp**3 * grid_particles(kp,jp,ip)%id_counter + & |
---|
949 | 10000_idp**2 * kp + 10000_idp * jp + ip |
---|
950 | ! |
---|
951 | !-- Count the number of particles that have been released before |
---|
952 | grid_particles(kp,jp,ip)%id_counter = & |
---|
953 | grid_particles(kp,jp,ip)%id_counter + 1 |
---|
954 | |
---|
955 | ENDDO |
---|
956 | |
---|
957 | ENDDO |
---|
958 | ENDDO |
---|
959 | ENDDO |
---|
960 | |
---|
961 | ! |
---|
962 | !-- Initialize aerosol background spectrum |
---|
963 | IF ( curvature_solution_effects ) THEN |
---|
964 | CALL lpm_init_aerosols(local_start) |
---|
965 | ENDIF |
---|
966 | |
---|
967 | ! |
---|
968 | !-- Add random fluctuation to particle positions. |
---|
969 | IF ( random_start_position ) THEN |
---|
970 | DO ip = nxl, nxr |
---|
971 | DO jp = nys, nyn |
---|
972 | DO kp = nzb+1, nzt |
---|
973 | number_of_particles = prt_count(kp,jp,ip) |
---|
974 | IF ( number_of_particles <= 0 ) CYCLE |
---|
975 | particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles) |
---|
976 | ! |
---|
977 | !-- Move only new particles. Moreover, limit random fluctuation |
---|
978 | !-- in order to prevent that particles move more than one grid box, |
---|
979 | !-- which would lead to problems concerning particle exchange |
---|
980 | !-- between processors in case pdx/pdy are larger than dx/dy, |
---|
981 | !-- respectively. |
---|
982 | DO n = local_start(kp,jp,ip), number_of_particles |
---|
983 | IF ( psl(particles(n)%group) /= psr(particles(n)%group) ) THEN |
---|
984 | rand_contr = ( random_function( iran_part ) - 0.5_wp ) * & |
---|
985 | pdx(particles(n)%group) |
---|
986 | particles(n)%x = particles(n)%x + & |
---|
987 | MERGE( rand_contr, SIGN( dx, rand_contr ), & |
---|
988 | ABS( rand_contr ) < dx & |
---|
989 | ) |
---|
990 | ENDIF |
---|
991 | IF ( pss(particles(n)%group) /= psn(particles(n)%group) ) THEN |
---|
992 | rand_contr = ( random_function( iran_part ) - 0.5_wp ) * & |
---|
993 | pdy(particles(n)%group) |
---|
994 | particles(n)%y = particles(n)%y + & |
---|
995 | MERGE( rand_contr, SIGN( dy, rand_contr ), & |
---|
996 | ABS( rand_contr ) < dy & |
---|
997 | ) |
---|
998 | ENDIF |
---|
999 | IF ( psb(particles(n)%group) /= pst(particles(n)%group) ) THEN |
---|
1000 | rand_contr = ( random_function( iran_part ) - 0.5_wp ) * & |
---|
1001 | pdz(particles(n)%group) |
---|
1002 | particles(n)%z = particles(n)%z + & |
---|
1003 | MERGE( rand_contr, SIGN( dzw(kp), rand_contr ), & |
---|
1004 | ABS( rand_contr ) < dzw(kp) & |
---|
1005 | ) |
---|
1006 | ENDIF |
---|
1007 | ENDDO |
---|
1008 | ! |
---|
1009 | !-- Identify particles located outside the model domain and reflect |
---|
1010 | !-- or absorb them if necessary. |
---|
1011 | CALL lpm_boundary_conds( 'bottom/top', i, j, k ) |
---|
1012 | ! |
---|
1013 | !-- Furthermore, remove particles located in topography. Note, as |
---|
1014 | !-- the particle speed is still zero at this point, wall |
---|
1015 | !-- reflection boundary conditions will not work in this case. |
---|
1016 | particles => & |
---|
1017 | grid_particles(kp,jp,ip)%particles(1:number_of_particles) |
---|
1018 | DO n = local_start(kp,jp,ip), number_of_particles |
---|
1019 | i = particles(n)%x * ddx |
---|
1020 | j = particles(n)%y * ddy |
---|
1021 | k = particles(n)%z / dz(1) + 1 + offset_ocean_nzt |
---|
1022 | DO WHILE( zw(k) < particles(n)%z ) |
---|
1023 | k = k + 1 |
---|
1024 | ENDDO |
---|
1025 | DO WHILE( zw(k-1) > particles(n)%z ) |
---|
1026 | k = k - 1 |
---|
1027 | ENDDO |
---|
1028 | ! |
---|
1029 | !-- Check if particle is within topography |
---|
1030 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 0 ) ) THEN |
---|
1031 | particles(n)%particle_mask = .FALSE. |
---|
1032 | deleted_particles = deleted_particles + 1 |
---|
1033 | ENDIF |
---|
1034 | |
---|
1035 | ENDDO |
---|
1036 | ENDDO |
---|
1037 | ENDDO |
---|
1038 | ENDDO |
---|
1039 | ! |
---|
1040 | !-- Exchange particles between grid cells and processors |
---|
1041 | CALL lpm_move_particle |
---|
1042 | CALL lpm_exchange_horiz |
---|
1043 | |
---|
1044 | ENDIF |
---|
1045 | ! |
---|
1046 | !-- In case of random_start_position, delete particles identified by |
---|
1047 | !-- lpm_exchange_horiz and lpm_boundary_conds. Then sort particles into blocks, |
---|
1048 | !-- which is needed for a fast interpolation of the LES fields on the particle |
---|
1049 | !-- position. |
---|
1050 | CALL lpm_sort_in_subboxes |
---|
1051 | |
---|
1052 | ! |
---|
1053 | !-- Determine the current number of particles |
---|
1054 | DO ip = nxl, nxr |
---|
1055 | DO jp = nys, nyn |
---|
1056 | DO kp = nzb+1, nzt |
---|
1057 | number_of_particles = number_of_particles & |
---|
1058 | + prt_count(kp,jp,ip) |
---|
1059 | ENDDO |
---|
1060 | ENDDO |
---|
1061 | ENDDO |
---|
1062 | ! |
---|
1063 | !-- Calculate the number of particles of the total domain |
---|
1064 | #if defined( __parallel ) |
---|
1065 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
1066 | CALL MPI_ALLREDUCE( number_of_particles, total_number_of_particles, 1, & |
---|
1067 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
---|
1068 | #else |
---|
1069 | total_number_of_particles = number_of_particles |
---|
1070 | #endif |
---|
1071 | |
---|
1072 | RETURN |
---|
1073 | |
---|
1074 | END SUBROUTINE lpm_create_particle |
---|
1075 | |
---|
1076 | SUBROUTINE lpm_init_aerosols(local_start) |
---|
1077 | |
---|
1078 | USE arrays_3d, & |
---|
1079 | ONLY: hyp, pt, q, exner |
---|
1080 | |
---|
1081 | USE basic_constants_and_equations_mod, & |
---|
1082 | ONLY: molecular_weight_of_solute, molecular_weight_of_water, magnus, & |
---|
1083 | pi, rd_d_rv, rho_l, r_v, rho_s, vanthoff |
---|
1084 | |
---|
1085 | USE kinds |
---|
1086 | |
---|
1087 | USE particle_attributes, & |
---|
1088 | ONLY: aero_species, aero_type, aero_weight, log_sigma, na, rm |
---|
1089 | |
---|
1090 | IMPLICIT NONE |
---|
1091 | |
---|
1092 | REAL(wp) :: afactor !< curvature effects |
---|
1093 | REAL(wp) :: bfactor !< solute effects |
---|
1094 | REAL(wp) :: dlogr !< logarithmic width of radius bin |
---|
1095 | REAL(wp) :: e_a !< vapor pressure |
---|
1096 | REAL(wp) :: e_s !< saturation vapor pressure |
---|
1097 | REAL(wp) :: rmin = 0.005e-6_wp !< minimum aerosol radius |
---|
1098 | REAL(wp) :: rmax = 10.0e-6_wp !< maximum aerosol radius |
---|
1099 | REAL(wp) :: r_mid !< mean radius of bin |
---|
1100 | REAL(wp) :: r_l !< left radius of bin |
---|
1101 | REAL(wp) :: r_r !< right radius of bin |
---|
1102 | REAL(wp) :: sigma !< surface tension |
---|
1103 | REAL(wp) :: t_int !< temperature |
---|
1104 | |
---|
1105 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg), INTENT(IN) :: local_start !< |
---|
1106 | |
---|
1107 | INTEGER(iwp) :: n !< |
---|
1108 | INTEGER(iwp) :: ip !< |
---|
1109 | INTEGER(iwp) :: jp !< |
---|
1110 | INTEGER(iwp) :: kp !< |
---|
1111 | |
---|
1112 | ! |
---|
1113 | !-- Set constants for different aerosol species |
---|
1114 | IF ( TRIM(aero_species) .EQ. 'nacl' ) THEN |
---|
1115 | molecular_weight_of_solute = 0.05844_wp |
---|
1116 | rho_s = 2165.0_wp |
---|
1117 | vanthoff = 2.0_wp |
---|
1118 | ELSEIF ( TRIM(aero_species) .EQ. 'c3h4o4' ) THEN |
---|
1119 | molecular_weight_of_solute = 0.10406_wp |
---|
1120 | rho_s = 1600.0_wp |
---|
1121 | vanthoff = 1.37_wp |
---|
1122 | ELSEIF ( TRIM(aero_species) .EQ. 'nh4o3' ) THEN |
---|
1123 | molecular_weight_of_solute = 0.08004_wp |
---|
1124 | rho_s = 1720.0_wp |
---|
1125 | vanthoff = 2.31_wp |
---|
1126 | ELSE |
---|
1127 | WRITE( message_string, * ) 'unknown aerosol species ', & |
---|
1128 | 'aero_species = "', TRIM( aero_species ), '"' |
---|
1129 | CALL message( 'lpm_init', 'PA0470', 1, 2, 0, 6, 0 ) |
---|
1130 | ENDIF |
---|
1131 | ! |
---|
1132 | !-- The following typical aerosol spectra are taken from Jaenicke (1993): |
---|
1133 | !-- Tropospheric aerosols. Published in Aerosol-Cloud-Climate Interactions. |
---|
1134 | IF ( TRIM(aero_type) .EQ. 'polar' ) THEN |
---|
1135 | na = (/ 2.17e1, 1.86e-1, 3.04e-4 /) * 1.0E6 |
---|
1136 | rm = (/ 0.0689, 0.375, 4.29 /) * 1.0E-6 |
---|
1137 | log_sigma = (/ 0.245, 0.300, 0.291 /) |
---|
1138 | ELSEIF ( TRIM(aero_type) .EQ. 'background' ) THEN |
---|
1139 | na = (/ 1.29e2, 5.97e1, 6.35e1 /) * 1.0E6 |
---|
1140 | rm = (/ 0.0036, 0.127, 0.259 /) * 1.0E-6 |
---|
1141 | log_sigma = (/ 0.645, 0.253, 0.425 /) |
---|
1142 | ELSEIF ( TRIM(aero_type) .EQ. 'maritime' ) THEN |
---|
1143 | na = (/ 1.33e2, 6.66e1, 3.06e0 /) * 1.0E6 |
---|
1144 | rm = (/ 0.0039, 0.133, 0.29 /) * 1.0E-6 |
---|
1145 | log_sigma = (/ 0.657, 0.210, 0.396 /) |
---|
1146 | ELSEIF ( TRIM(aero_type) .EQ. 'continental' ) THEN |
---|
1147 | na = (/ 3.20e3, 2.90e3, 3.00e-1 /) * 1.0E6 |
---|
1148 | rm = (/ 0.01, 0.058, 0.9 /) * 1.0E-6 |
---|
1149 | log_sigma = (/ 0.161, 0.217, 0.380 /) |
---|
1150 | ELSEIF ( TRIM(aero_type) .EQ. 'desert' ) THEN |
---|
1151 | na = (/ 7.26e2, 1.14e3, 1.78e-1 /) * 1.0E6 |
---|
1152 | rm = (/ 0.001, 0.0188, 10.8 /) * 1.0E-6 |
---|
1153 | log_sigma = (/ 0.247, 0.770, 0.438 /) |
---|
1154 | ELSEIF ( TRIM(aero_type) .EQ. 'rural' ) THEN |
---|
1155 | na = (/ 6.65e3, 1.47e2, 1.99e3 /) * 1.0E6 |
---|
1156 | rm = (/ 0.00739, 0.0269, 0.0419 /) * 1.0E-6 |
---|
1157 | log_sigma = (/ 0.225, 0.557, 0.266 /) |
---|
1158 | ELSEIF ( TRIM(aero_type) .EQ. 'urban' ) THEN |
---|
1159 | na = (/ 9.93e4, 1.11e3, 3.64e4 /) * 1.0E6 |
---|
1160 | rm = (/ 0.00651, 0.00714, 0.0248 /) * 1.0E-6 |
---|
1161 | log_sigma = (/ 0.245, 0.666, 0.337 /) |
---|
1162 | ELSEIF ( TRIM(aero_type) .EQ. 'user' ) THEN |
---|
1163 | CONTINUE |
---|
1164 | ELSE |
---|
1165 | WRITE( message_string, * ) 'unknown aerosol type ', & |
---|
1166 | 'aero_type = "', TRIM( aero_type ), '"' |
---|
1167 | CALL message( 'lpm_init', 'PA0459', 1, 2, 0, 6, 0 ) |
---|
1168 | ENDIF |
---|
1169 | |
---|
1170 | DO ip = nxl, nxr |
---|
1171 | DO jp = nys, nyn |
---|
1172 | DO kp = nzb+1, nzt |
---|
1173 | |
---|
1174 | number_of_particles = prt_count(kp,jp,ip) |
---|
1175 | IF ( number_of_particles <= 0 ) CYCLE |
---|
1176 | particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles) |
---|
1177 | |
---|
1178 | dlogr = ( LOG10(rmax) - LOG10(rmin) ) / ( number_of_particles - local_start(kp,jp,ip) + 1 ) |
---|
1179 | ! |
---|
1180 | !-- Initialize the aerosols with a predefined spectral distribution |
---|
1181 | !-- of the dry radius (logarithmically increasing bins) and a varying |
---|
1182 | !-- weighting factor |
---|
1183 | DO n = local_start(kp,jp,ip), number_of_particles !only new particles |
---|
1184 | |
---|
1185 | r_l = 10.0**( LOG10( rmin ) + (n-1) * dlogr ) |
---|
1186 | r_r = 10.0**( LOG10( rmin ) + n * dlogr ) |
---|
1187 | r_mid = SQRT( r_l * r_r ) |
---|
1188 | |
---|
1189 | particles(n)%aux1 = r_mid |
---|
1190 | particles(n)%weight_factor = & |
---|
1191 | ( na(1) / ( SQRT( 2.0 * pi ) * log_sigma(1) ) * & |
---|
1192 | EXP( - LOG10( r_mid / rm(1) )**2 / ( 2.0 * log_sigma(1)**2 ) ) + & |
---|
1193 | na(2) / ( SQRT( 2.0 * pi ) * log_sigma(2) ) * & |
---|
1194 | EXP( - LOG10( r_mid / rm(2) )**2 / ( 2.0 * log_sigma(2)**2 ) ) + & |
---|
1195 | na(3) / ( SQRT( 2.0 * pi ) * log_sigma(3) ) * & |
---|
1196 | EXP( - LOG10( r_mid / rm(3) )**2 / ( 2.0 * log_sigma(3)**2 ) ) & |
---|
1197 | ) * ( LOG10(r_r) - LOG10(r_l) ) * ( dx * dy * dzw(kp) ) |
---|
1198 | |
---|
1199 | ! |
---|
1200 | !-- Multiply weight_factor with the namelist parameter aero_weight |
---|
1201 | !-- to increase or decrease the number of simulated aerosols |
---|
1202 | particles(n)%weight_factor = particles(n)%weight_factor * aero_weight |
---|
1203 | |
---|
1204 | IF ( particles(n)%weight_factor - FLOOR(particles(n)%weight_factor,KIND=wp) & |
---|
1205 | .GT. random_function( iran_part ) ) THEN |
---|
1206 | particles(n)%weight_factor = FLOOR(particles(n)%weight_factor,KIND=wp) + 1.0_wp |
---|
1207 | ELSE |
---|
1208 | particles(n)%weight_factor = FLOOR(particles(n)%weight_factor,KIND=wp) |
---|
1209 | ENDIF |
---|
1210 | ! |
---|
1211 | !-- Unnecessary particles will be deleted |
---|
1212 | IF ( particles(n)%weight_factor .LE. 0.0 ) particles(n)%particle_mask = .FALSE. |
---|
1213 | |
---|
1214 | ENDDO |
---|
1215 | ! |
---|
1216 | !-- Set particle radius to equilibrium radius based on the environmental |
---|
1217 | !-- supersaturation (Khvorostyanov and Curry, 2007, JGR). This avoids |
---|
1218 | !-- the sometimes lengthy growth toward their equilibrium radius within |
---|
1219 | !-- the simulation. |
---|
1220 | t_int = pt(kp,jp,ip) * exner(kp) |
---|
1221 | |
---|
1222 | e_s = magnus( t_int ) |
---|
1223 | e_a = q(kp,jp,ip) * hyp(kp) / ( q(kp,jp,ip) + rd_d_rv ) |
---|
1224 | |
---|
1225 | sigma = 0.0761_wp - 0.000155_wp * ( t_int - 273.15_wp ) |
---|
1226 | afactor = 2.0_wp * sigma / ( rho_l * r_v * t_int ) |
---|
1227 | |
---|
1228 | bfactor = vanthoff * molecular_weight_of_water * & |
---|
1229 | rho_s / ( molecular_weight_of_solute * rho_l ) |
---|
1230 | ! |
---|
1231 | !-- The formula is only valid for subsaturated environments. For |
---|
1232 | !-- supersaturations higher than -5 %, the supersaturation is set to -5%. |
---|
1233 | IF ( e_a / e_s >= 0.95_wp ) e_a = 0.95_wp * e_s |
---|
1234 | |
---|
1235 | DO n = local_start(kp,jp,ip), number_of_particles !only new particles |
---|
1236 | ! |
---|
1237 | !-- For details on this equation, see Eq. (14) of Khvorostyanov and |
---|
1238 | !-- Curry (2007, JGR) |
---|
1239 | particles(n)%radius = bfactor**0.3333333_wp * & |
---|
1240 | particles(n)%aux1 / ( 1.0_wp - e_a / e_s )**0.3333333_wp / & |
---|
1241 | ( 1.0_wp + ( afactor / ( 3.0_wp * bfactor**0.3333333_wp * & |
---|
1242 | particles(n)%aux1 ) ) / & |
---|
1243 | ( 1.0_wp - e_a / e_s )**0.6666666_wp & |
---|
1244 | ) |
---|
1245 | |
---|
1246 | ENDDO |
---|
1247 | |
---|
1248 | ENDDO |
---|
1249 | ENDDO |
---|
1250 | ENDDO |
---|
1251 | |
---|
1252 | END SUBROUTINE lpm_init_aerosols |
---|
1253 | |
---|
1254 | END MODULE lpm_init_mod |
---|