1 | !> @file lpm_init.f90 |
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2 | !--------------------------------------------------------------------------------! |
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3 | ! This file is part of PALM. |
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4 | ! |
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5 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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6 | ! of the GNU General Public License as published by the Free Software Foundation, |
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7 | ! either version 3 of the License, or (at your option) any later version. |
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8 | ! |
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9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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10 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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11 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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12 | ! |
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13 | ! You should have received a copy of the GNU General Public License along with |
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14 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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15 | ! |
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16 | ! Copyright 1997-2015 Leibniz Universitaet Hannover |
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17 | !--------------------------------------------------------------------------------! |
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18 | ! |
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19 | ! Current revisions: |
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20 | ! ----------------- |
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21 | ! |
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22 | ! |
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23 | ! Former revisions: |
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24 | ! ----------------- |
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25 | ! $Id: lpm_init.f90 1726 2015-11-17 13:03:53Z raasch $ |
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26 | ! |
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27 | ! 1725 2015-11-17 13:01:51Z hoffmann |
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28 | ! Bugfix: Processor-dependent seed for random function is generated before it is |
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29 | ! used. |
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30 | ! |
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31 | ! 1691 2015-10-26 16:17:44Z maronga |
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32 | ! Renamed prandtl_layer to constant_flux_layer. |
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33 | ! |
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34 | ! 1685 2015-10-08 07:32:13Z raasch |
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35 | ! bugfix concerning vertical index offset in case of ocean |
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36 | ! |
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37 | ! 1682 2015-10-07 23:56:08Z knoop |
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38 | ! Code annotations made doxygen readable |
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39 | ! |
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40 | ! 1575 2015-03-27 09:56:27Z raasch |
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41 | ! initial vertical particle position is allowed to follow the topography |
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42 | ! |
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43 | ! 1359 2014-04-11 17:15:14Z hoffmann |
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44 | ! New particle structure integrated. |
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45 | ! Kind definition added to all floating point numbers. |
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46 | ! lpm_init changed form a subroutine to a module. |
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47 | ! |
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48 | ! 1327 2014-03-21 11:00:16Z raasch |
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49 | ! -netcdf_output |
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50 | ! |
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51 | ! 1322 2014-03-20 16:38:49Z raasch |
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52 | ! REAL functions provided with KIND-attribute |
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53 | ! |
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54 | ! 1320 2014-03-20 08:40:49Z raasch |
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55 | ! ONLY-attribute added to USE-statements, |
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56 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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57 | ! kinds are defined in new module kinds, |
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58 | ! revision history before 2012 removed, |
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59 | ! comment fields (!:) to be used for variable explanations added to |
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60 | ! all variable declaration statements |
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61 | ! bugfix: #if defined( __parallel ) added |
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62 | ! |
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63 | ! 1314 2014-03-14 18:25:17Z suehring |
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64 | ! Vertical logarithmic interpolation of horizontal particle speed for particles |
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65 | ! between roughness height and first vertical grid level. |
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66 | ! |
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67 | ! 1092 2013-02-02 11:24:22Z raasch |
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68 | ! unused variables removed |
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69 | ! |
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70 | ! 1036 2012-10-22 13:43:42Z raasch |
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71 | ! code put under GPL (PALM 3.9) |
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72 | ! |
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73 | ! 849 2012-03-15 10:35:09Z raasch |
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74 | ! routine renamed: init_particles -> lpm_init |
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75 | ! de_dx, de_dy, de_dz are allocated here (instead of automatic arrays in |
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76 | ! advec_particles), |
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77 | ! sort_particles renamed lpm_sort_arrays, user_init_particles renamed lpm_init |
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78 | ! |
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79 | ! 828 2012-02-21 12:00:36Z raasch |
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80 | ! call of init_kernels, particle feature color renamed class |
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81 | ! |
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82 | ! 824 2012-02-17 09:09:57Z raasch |
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83 | ! particle attributes speed_x|y|z_sgs renamed rvar1|2|3, |
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84 | ! array particles implemented as pointer |
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85 | ! |
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86 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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87 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng for allocation |
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88 | ! of arrays. |
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89 | ! |
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90 | ! Revision 1.1 1999/11/25 16:22:38 raasch |
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91 | ! Initial revision |
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92 | ! |
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93 | ! |
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94 | ! Description: |
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95 | ! ------------ |
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96 | !> This routine initializes a set of particles and their attributes (position, |
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97 | !> radius, ..) which are used by the Lagrangian particle model (see lpm). |
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98 | !------------------------------------------------------------------------------! |
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99 | MODULE lpm_init_mod |
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100 | |
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101 | |
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102 | USE arrays_3d, & |
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103 | ONLY: de_dx, de_dy, de_dz, zu, zw, z0 |
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104 | |
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105 | USE cloud_parameters, & |
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106 | ONLY: curvature_solution_effects |
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107 | |
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108 | USE control_parameters, & |
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109 | ONLY: cloud_droplets, constant_flux_layer, current_timestep_number, & |
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110 | dz, initializing_actions, message_string, netcdf_data_format, & |
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111 | ocean, simulated_time |
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112 | |
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113 | USE dvrp_variables, & |
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114 | ONLY: particle_color, particle_dvrpsize |
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115 | |
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116 | USE grid_variables, & |
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117 | ONLY: ddx, dx, ddy, dy |
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118 | |
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119 | USE indices, & |
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120 | ONLY: nx, nxl, nxlg, nxrg, nxr, ny, nyn, nys, nyng, nysg, nz, nzb, & |
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121 | nzb_w_inner, nzt |
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122 | |
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123 | USE kinds |
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124 | |
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125 | USE lpm_collision_kernels_mod, & |
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126 | ONLY: init_kernels |
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127 | |
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128 | USE particle_attributes, & |
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129 | ONLY: alloc_factor, bc_par_b, bc_par_lr, bc_par_ns, bc_par_t, & |
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130 | block_offset, block_offset_def, collision_kernel, & |
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131 | density_ratio, dvrp_psize, grid_particles, & |
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132 | initial_weighting_factor, ibc_par_b, ibc_par_lr, ibc_par_ns, & |
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133 | ibc_par_t, iran_part, log_z_z0, & |
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134 | max_number_of_particle_groups, maximum_number_of_particles, & |
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135 | maximum_number_of_tailpoints, maximum_number_of_tails, & |
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136 | minimum_tailpoint_distance, min_nr_particle, & |
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137 | mpi_particle_type, new_tail_id, & |
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138 | number_of_initial_tails, number_of_particles, & |
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139 | number_of_particle_groups, number_of_sublayers, & |
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140 | number_of_tails, offset_ocean_nzt, offset_ocean_nzt_m1, & |
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141 | particles, particle_advection_start, particle_groups, & |
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142 | particle_groups_type, particles_per_point, & |
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143 | particle_tail_coordinates, particle_type, pdx, pdy, pdz, & |
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144 | prt_count, psb, psl, psn, psr, pss, pst, & |
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145 | radius, random_start_position, read_particles_from_restartfile,& |
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146 | seed_follows_topography, skip_particles_for_tail, sort_count, & |
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147 | tail_mask, total_number_of_particles, total_number_of_tails, & |
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148 | use_particle_tails, use_sgs_for_particles, & |
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149 | write_particle_statistics, uniform_particles, zero_particle, & |
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150 | z0_av_global |
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151 | |
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152 | USE pegrid |
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153 | |
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154 | USE random_function_mod, & |
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155 | ONLY: random_function |
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156 | |
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157 | IMPLICIT NONE |
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158 | |
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159 | PRIVATE |
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160 | |
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161 | INTEGER(iwp), PARAMETER :: PHASE_INIT = 1 !< |
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162 | INTEGER(iwp), PARAMETER, PUBLIC :: PHASE_RELEASE = 2 !< |
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163 | |
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164 | INTERFACE lpm_init |
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165 | MODULE PROCEDURE lpm_init |
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166 | END INTERFACE lpm_init |
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167 | |
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168 | INTERFACE lpm_create_particle |
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169 | MODULE PROCEDURE lpm_create_particle |
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170 | END INTERFACE lpm_create_particle |
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171 | |
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172 | PUBLIC lpm_init, lpm_create_particle |
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173 | |
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174 | CONTAINS |
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175 | |
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176 | !------------------------------------------------------------------------------! |
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177 | ! Description: |
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178 | ! ------------ |
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179 | !> @todo Missing subroutine description. |
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180 | !------------------------------------------------------------------------------! |
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181 | SUBROUTINE lpm_init |
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182 | |
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183 | USE lpm_collision_kernels_mod, & |
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184 | ONLY: init_kernels |
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185 | |
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186 | IMPLICIT NONE |
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187 | |
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188 | INTEGER(iwp) :: i !< |
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189 | INTEGER(iwp) :: ip !< |
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190 | INTEGER(iwp) :: j !< |
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191 | INTEGER(iwp) :: jp !< |
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192 | INTEGER(iwp) :: k !< |
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193 | INTEGER(iwp) :: kp !< |
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194 | INTEGER(iwp) :: n !< |
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195 | INTEGER(iwp) :: nn !< |
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196 | |
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197 | #if defined( __parallel ) |
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198 | INTEGER(iwp), DIMENSION(3) :: blocklengths !< |
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199 | INTEGER(iwp), DIMENSION(3) :: displacements !< |
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200 | INTEGER(iwp), DIMENSION(3) :: types !< |
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201 | #endif |
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202 | LOGICAL :: uniform_particles_l !< |
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203 | |
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204 | REAL(wp) :: height_int !< |
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205 | REAL(wp) :: height_p !< |
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206 | REAL(wp) :: z_p !< |
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207 | REAL(wp) :: z0_av_local !< |
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208 | |
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209 | #if defined( __parallel ) |
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210 | ! |
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211 | !-- Define MPI derived datatype for FORTRAN datatype particle_type (see module |
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212 | !-- particle_attributes). Integer length is 4 byte, Real is 8 byte |
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213 | #if defined( __twocachelines ) |
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214 | blocklengths(1) = 7; blocklengths(2) = 18; blocklengths(3) = 1 |
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215 | displacements(1) = 0; displacements(2) = 64; displacements(3) = 128 |
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216 | |
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217 | types(1) = MPI_REAL ! 64 bit words |
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218 | types(2) = MPI_INTEGER ! 32 Bit words |
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219 | types(3) = MPI_UB |
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220 | #else |
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221 | blocklengths(1) = 19; blocklengths(2) = 6; blocklengths(3) = 1 |
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222 | displacements(1) = 0; displacements(2) = 152; displacements(3) = 176 |
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223 | |
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224 | types(1) = MPI_REAL |
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225 | types(2) = MPI_INTEGER |
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226 | types(3) = MPI_UB |
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227 | #endif |
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228 | CALL MPI_TYPE_STRUCT( 3, blocklengths, displacements, types, & |
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229 | mpi_particle_type, ierr ) |
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230 | CALL MPI_TYPE_COMMIT( mpi_particle_type, ierr ) |
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231 | #endif |
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232 | |
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233 | ! |
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234 | !-- In case of oceans runs, the vertical index calculations need an offset, |
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235 | !-- because otherwise the k indices will become negative |
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236 | IF ( ocean ) THEN |
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237 | offset_ocean_nzt = nzt |
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238 | offset_ocean_nzt_m1 = nzt - 1 |
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239 | ENDIF |
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240 | |
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241 | ! |
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242 | !-- Define block offsets for dividing a gridcell in 8 sub cells |
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243 | |
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244 | block_offset(0) = block_offset_def (-1,-1,-1) |
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245 | block_offset(1) = block_offset_def (-1,-1, 0) |
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246 | block_offset(2) = block_offset_def (-1, 0,-1) |
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247 | block_offset(3) = block_offset_def (-1, 0, 0) |
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248 | block_offset(4) = block_offset_def ( 0,-1,-1) |
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249 | block_offset(5) = block_offset_def ( 0,-1, 0) |
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250 | block_offset(6) = block_offset_def ( 0, 0,-1) |
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251 | block_offset(7) = block_offset_def ( 0, 0, 0) |
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252 | ! |
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253 | !-- Check the number of particle groups. |
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254 | IF ( number_of_particle_groups > max_number_of_particle_groups ) THEN |
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255 | WRITE( message_string, * ) 'max_number_of_particle_groups =', & |
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256 | max_number_of_particle_groups , & |
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257 | '&number_of_particle_groups reset to ', & |
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258 | max_number_of_particle_groups |
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259 | CALL message( 'lpm_init', 'PA0213', 0, 1, 0, 6, 0 ) |
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260 | number_of_particle_groups = max_number_of_particle_groups |
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261 | ENDIF |
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262 | |
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263 | ! |
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264 | !-- Set default start positions, if necessary |
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265 | IF ( psl(1) == 9999999.9_wp ) psl(1) = -0.5_wp * dx |
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266 | IF ( psr(1) == 9999999.9_wp ) psr(1) = ( nx + 0.5_wp ) * dx |
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267 | IF ( pss(1) == 9999999.9_wp ) pss(1) = -0.5_wp * dy |
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268 | IF ( psn(1) == 9999999.9_wp ) psn(1) = ( ny + 0.5_wp ) * dy |
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269 | IF ( psb(1) == 9999999.9_wp ) psb(1) = zu(nz/2) |
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270 | IF ( pst(1) == 9999999.9_wp ) pst(1) = psb(1) |
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271 | |
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272 | IF ( pdx(1) == 9999999.9_wp .OR. pdx(1) == 0.0_wp ) pdx(1) = dx |
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273 | IF ( pdy(1) == 9999999.9_wp .OR. pdy(1) == 0.0_wp ) pdy(1) = dy |
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274 | IF ( pdz(1) == 9999999.9_wp .OR. pdz(1) == 0.0_wp ) pdz(1) = zu(2) - zu(1) |
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275 | |
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276 | DO j = 2, number_of_particle_groups |
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277 | IF ( psl(j) == 9999999.9_wp ) psl(j) = psl(j-1) |
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278 | IF ( psr(j) == 9999999.9_wp ) psr(j) = psr(j-1) |
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279 | IF ( pss(j) == 9999999.9_wp ) pss(j) = pss(j-1) |
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280 | IF ( psn(j) == 9999999.9_wp ) psn(j) = psn(j-1) |
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281 | IF ( psb(j) == 9999999.9_wp ) psb(j) = psb(j-1) |
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282 | IF ( pst(j) == 9999999.9_wp ) pst(j) = pst(j-1) |
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283 | IF ( pdx(j) == 9999999.9_wp .OR. pdx(j) == 0.0_wp ) pdx(j) = pdx(j-1) |
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284 | IF ( pdy(j) == 9999999.9_wp .OR. pdy(j) == 0.0_wp ) pdy(j) = pdy(j-1) |
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285 | IF ( pdz(j) == 9999999.9_wp .OR. pdz(j) == 0.0_wp ) pdz(j) = pdz(j-1) |
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286 | ENDDO |
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287 | |
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288 | ! |
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289 | !-- Allocate arrays required for calculating particle SGS velocities |
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290 | IF ( use_sgs_for_particles ) THEN |
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291 | ALLOCATE( de_dx(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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292 | de_dy(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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293 | de_dz(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
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294 | ENDIF |
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295 | |
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296 | ! |
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297 | !-- Allocate array required for logarithmic vertical interpolation of |
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298 | !-- horizontal particle velocities between the surface and the first vertical |
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299 | !-- grid level. In order to avoid repeated CPU cost-intensive CALLS of |
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300 | !-- intrinsic FORTRAN procedure LOG(z/z0), LOG(z/z0) is precalculated for |
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301 | !-- several heights. Splitting into 20 sublayers turned out to be sufficient. |
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302 | !-- To obtain exact height levels of particles, linear interpolation is applied |
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303 | !-- (see lpm_advec.f90). |
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304 | IF ( constant_flux_layer ) THEN |
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305 | |
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306 | ALLOCATE ( log_z_z0(0:number_of_sublayers) ) |
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307 | z_p = zu(nzb+1) - zw(nzb) |
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308 | |
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309 | ! |
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310 | !-- Calculate horizontal mean value of z0 used for logartihmic |
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311 | !-- interpolation. Note: this is not exact for heterogeneous z0. |
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312 | !-- However, sensitivity studies showed that the effect is |
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313 | !-- negligible. |
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314 | z0_av_local = SUM( z0(nys:nyn,nxl:nxr) ) |
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315 | z0_av_global = 0.0_wp |
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316 | |
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317 | #if defined( __parallel ) |
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318 | CALL MPI_ALLREDUCE(z0_av_local, z0_av_global, 1, MPI_REAL, MPI_SUM, & |
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319 | comm2d, ierr ) |
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320 | #else |
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321 | z0_av_global = z0_av_local |
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322 | #endif |
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323 | |
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324 | z0_av_global = z0_av_global / ( ( ny + 1 ) * ( nx + 1 ) ) |
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325 | ! |
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326 | !-- Horizontal wind speed is zero below and at z0 |
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327 | log_z_z0(0) = 0.0_wp |
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328 | ! |
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329 | !-- Calculate vertical depth of the sublayers |
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330 | height_int = ( z_p - z0_av_global ) / REAL( number_of_sublayers, KIND=wp ) |
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331 | ! |
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332 | !-- Precalculate LOG(z/z0) |
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333 | height_p = 0.0_wp |
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334 | DO k = 1, number_of_sublayers |
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335 | |
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336 | height_p = height_p + height_int |
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337 | log_z_z0(k) = LOG( height_p / z0_av_global ) |
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338 | |
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339 | ENDDO |
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340 | |
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341 | |
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342 | ENDIF |
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343 | |
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344 | ! |
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345 | !-- Check boundary condition and set internal variables |
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346 | SELECT CASE ( bc_par_b ) |
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347 | |
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348 | CASE ( 'absorb' ) |
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349 | ibc_par_b = 1 |
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350 | |
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351 | CASE ( 'reflect' ) |
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352 | ibc_par_b = 2 |
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353 | |
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354 | CASE DEFAULT |
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355 | WRITE( message_string, * ) 'unknown boundary condition ', & |
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356 | 'bc_par_b = "', TRIM( bc_par_b ), '"' |
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357 | CALL message( 'lpm_init', 'PA0217', 1, 2, 0, 6, 0 ) |
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358 | |
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359 | END SELECT |
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360 | SELECT CASE ( bc_par_t ) |
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361 | |
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362 | CASE ( 'absorb' ) |
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363 | ibc_par_t = 1 |
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364 | |
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365 | CASE ( 'reflect' ) |
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366 | ibc_par_t = 2 |
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367 | |
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368 | CASE DEFAULT |
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369 | WRITE( message_string, * ) 'unknown boundary condition ', & |
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370 | 'bc_par_t = "', TRIM( bc_par_t ), '"' |
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371 | CALL message( 'lpm_init', 'PA0218', 1, 2, 0, 6, 0 ) |
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372 | |
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373 | END SELECT |
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374 | SELECT CASE ( bc_par_lr ) |
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375 | |
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376 | CASE ( 'cyclic' ) |
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377 | ibc_par_lr = 0 |
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378 | |
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379 | CASE ( 'absorb' ) |
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380 | ibc_par_lr = 1 |
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381 | |
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382 | CASE ( 'reflect' ) |
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383 | ibc_par_lr = 2 |
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384 | |
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385 | CASE DEFAULT |
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386 | WRITE( message_string, * ) 'unknown boundary condition ', & |
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387 | 'bc_par_lr = "', TRIM( bc_par_lr ), '"' |
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388 | CALL message( 'lpm_init', 'PA0219', 1, 2, 0, 6, 0 ) |
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389 | |
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390 | END SELECT |
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391 | SELECT CASE ( bc_par_ns ) |
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392 | |
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393 | CASE ( 'cyclic' ) |
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394 | ibc_par_ns = 0 |
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395 | |
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396 | CASE ( 'absorb' ) |
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397 | ibc_par_ns = 1 |
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398 | |
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399 | CASE ( 'reflect' ) |
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400 | ibc_par_ns = 2 |
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401 | |
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402 | CASE DEFAULT |
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403 | WRITE( message_string, * ) 'unknown boundary condition ', & |
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404 | 'bc_par_ns = "', TRIM( bc_par_ns ), '"' |
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405 | CALL message( 'lpm_init', 'PA0220', 1, 2, 0, 6, 0 ) |
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406 | |
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407 | END SELECT |
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408 | |
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409 | ! |
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410 | !-- Initialize collision kernels |
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411 | IF ( collision_kernel /= 'none' ) CALL init_kernels |
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412 | |
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413 | ! |
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414 | !-- For the first model run of a possible job chain initialize the |
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415 | !-- particles, otherwise read the particle data from restart file. |
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416 | IF ( TRIM( initializing_actions ) == 'read_restart_data' & |
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417 | .AND. read_particles_from_restartfile ) THEN |
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418 | |
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419 | CALL lpm_read_restart_file |
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420 | |
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421 | ELSE |
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422 | |
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423 | ! |
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424 | !-- Allocate particle arrays and set attributes of the initial set of |
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425 | !-- particles, which can be also periodically released at later times. |
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426 | !-- Also allocate array for particle tail coordinates, if needed. |
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427 | ALLOCATE( prt_count(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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428 | grid_particles(nzb+1:nzt,nys:nyn,nxl:nxr) ) |
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429 | |
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430 | maximum_number_of_particles = 0 |
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431 | number_of_particles = 0 |
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432 | |
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433 | sort_count = 0 |
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434 | prt_count = 0 |
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435 | |
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436 | ! |
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437 | !-- Initialize all particles with dummy values (otherwise errors may |
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438 | !-- occur within restart runs). The reason for this is still not clear |
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439 | !-- and may be presumably caused by errors in the respective user-interface. |
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440 | #if defined( __twocachelines ) |
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441 | zero_particle = particle_type( 0.0_wp, 0.0_sp, 0.0_sp, 0.0_sp, 0.0_sp, & |
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442 | 0.0_sp, 0.0_sp, 0.0_wp, 0.0_wp, 0.0_wp, & |
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443 | 0, .FALSE., 0.0_wp, 0.0_wp, 0.0_wp, & |
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444 | 0.0_sp, 0.0_sp, 0.0_sp, 0.0_sp, 0.0_sp, & |
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445 | 0.0_sp, 0, 0, 0, -1) |
---|
446 | #else |
---|
447 | zero_particle = particle_type( 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
448 | 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
449 | 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, & |
---|
450 | 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0, 0, 0, & |
---|
451 | 0, .FALSE., -1) |
---|
452 | #endif |
---|
453 | particle_groups = particle_groups_type( 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp ) |
---|
454 | |
---|
455 | ! |
---|
456 | !-- Set the default particle size used for dvrp plots |
---|
457 | IF ( dvrp_psize == 9999999.9_wp ) dvrp_psize = 0.2_wp * dx |
---|
458 | |
---|
459 | ! |
---|
460 | !-- Set values for the density ratio and radius for all particle |
---|
461 | !-- groups, if necessary |
---|
462 | IF ( density_ratio(1) == 9999999.9_wp ) density_ratio(1) = 0.0_wp |
---|
463 | IF ( radius(1) == 9999999.9_wp ) radius(1) = 0.0_wp |
---|
464 | DO i = 2, number_of_particle_groups |
---|
465 | IF ( density_ratio(i) == 9999999.9_wp ) THEN |
---|
466 | density_ratio(i) = density_ratio(i-1) |
---|
467 | ENDIF |
---|
468 | IF ( radius(i) == 9999999.9_wp ) radius(i) = radius(i-1) |
---|
469 | ENDDO |
---|
470 | |
---|
471 | DO i = 1, number_of_particle_groups |
---|
472 | IF ( density_ratio(i) /= 0.0_wp .AND. radius(i) == 0 ) THEN |
---|
473 | WRITE( message_string, * ) 'particle group #', i, 'has a', & |
---|
474 | 'density ratio /= 0 but radius = 0' |
---|
475 | CALL message( 'lpm_init', 'PA0215', 1, 2, 0, 6, 0 ) |
---|
476 | ENDIF |
---|
477 | particle_groups(i)%density_ratio = density_ratio(i) |
---|
478 | particle_groups(i)%radius = radius(i) |
---|
479 | ENDDO |
---|
480 | |
---|
481 | ! |
---|
482 | !-- Set a seed value for the random number generator to be exclusively |
---|
483 | !-- used for the particle code. The generated random numbers should be |
---|
484 | !-- different on the different PEs. |
---|
485 | iran_part = iran_part + myid |
---|
486 | |
---|
487 | CALL lpm_create_particle (PHASE_INIT) |
---|
488 | |
---|
489 | ! |
---|
490 | !-- User modification of initial particles |
---|
491 | CALL user_lpm_init |
---|
492 | |
---|
493 | ! |
---|
494 | !-- Open file for statistical informations about particle conditions |
---|
495 | IF ( write_particle_statistics ) THEN |
---|
496 | CALL check_open( 80 ) |
---|
497 | WRITE ( 80, 8000 ) current_timestep_number, simulated_time, & |
---|
498 | number_of_particles, & |
---|
499 | maximum_number_of_particles |
---|
500 | CALL close_file( 80 ) |
---|
501 | ENDIF |
---|
502 | |
---|
503 | ! |
---|
504 | !-- Check if particles are really uniform in color and radius (dvrp_size) |
---|
505 | !-- (uniform_particles is preset TRUE) |
---|
506 | IF ( uniform_particles ) THEN |
---|
507 | DO ip = nxl, nxr |
---|
508 | DO jp = nys, nyn |
---|
509 | DO kp = nzb+1, nzt |
---|
510 | |
---|
511 | n = prt_count(kp,jp,ip) |
---|
512 | IF ( MINVAL( grid_particles(kp,jp,ip)%particles(1:n)%dvrp_psize ) == & |
---|
513 | MAXVAL( grid_particles(kp,jp,ip)%particles(1:n)%dvrp_psize ) .AND. & |
---|
514 | MINVAL( grid_particles(kp,jp,ip)%particles(1:n)%class ) == & |
---|
515 | MAXVAL( grid_particles(kp,jp,ip)%particles(1:n)%class ) ) THEN |
---|
516 | uniform_particles_l = .TRUE. |
---|
517 | ELSE |
---|
518 | uniform_particles_l = .FALSE. |
---|
519 | ENDIF |
---|
520 | |
---|
521 | ENDDO |
---|
522 | ENDDO |
---|
523 | ENDDO |
---|
524 | |
---|
525 | #if defined( __parallel ) |
---|
526 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
527 | CALL MPI_ALLREDUCE( uniform_particles_l, uniform_particles, 1, & |
---|
528 | MPI_LOGICAL, MPI_LAND, comm2d, ierr ) |
---|
529 | #else |
---|
530 | uniform_particles = uniform_particles_l |
---|
531 | #endif |
---|
532 | |
---|
533 | ENDIF |
---|
534 | |
---|
535 | ! |
---|
536 | !-- Particles will probably become none-uniform, if their size and color |
---|
537 | !-- will be determined by flow variables |
---|
538 | IF ( particle_color /= 'none' .OR. particle_dvrpsize /= 'none' ) THEN |
---|
539 | uniform_particles = .FALSE. |
---|
540 | ENDIF |
---|
541 | |
---|
542 | ! !kk Not implemented aft individual particle array fort every gridcell |
---|
543 | ! ! |
---|
544 | ! !-- Set the beginning of the particle tails and their age |
---|
545 | ! IF ( use_particle_tails ) THEN |
---|
546 | ! ! |
---|
547 | ! !-- Choose the maximum number of tails with respect to the maximum number |
---|
548 | ! !-- of particles and skip_particles_for_tail |
---|
549 | ! maximum_number_of_tails = maximum_number_of_particles / & |
---|
550 | ! skip_particles_for_tail |
---|
551 | ! |
---|
552 | ! ! |
---|
553 | ! !-- Create a minimum number of tails in case that there is no tail |
---|
554 | ! !-- initially (otherwise, index errors will occur when adressing the |
---|
555 | ! !-- arrays below) |
---|
556 | ! IF ( maximum_number_of_tails == 0 ) maximum_number_of_tails = 10 |
---|
557 | ! |
---|
558 | ! ALLOCATE( particle_tail_coordinates(maximum_number_of_tailpoints,5, & |
---|
559 | ! maximum_number_of_tails), & |
---|
560 | ! new_tail_id(maximum_number_of_tails), & |
---|
561 | ! tail_mask(maximum_number_of_tails) ) |
---|
562 | ! |
---|
563 | ! particle_tail_coordinates = 0.0_wp |
---|
564 | ! minimum_tailpoint_distance = minimum_tailpoint_distance**2 |
---|
565 | ! number_of_initial_tails = number_of_tails |
---|
566 | ! |
---|
567 | ! nn = 0 |
---|
568 | ! DO n = 1, number_of_particles |
---|
569 | ! ! |
---|
570 | ! !-- Only for those particles marked above with a provisional tail_id |
---|
571 | ! !-- tails will be created. Particles now get their final tail_id. |
---|
572 | ! IF ( particles(n)%tail_id /= 0 ) THEN |
---|
573 | ! |
---|
574 | ! nn = nn + 1 |
---|
575 | ! particles(n)%tail_id = nn |
---|
576 | ! |
---|
577 | ! particle_tail_coordinates(1,1,nn) = particles(n)%x |
---|
578 | ! particle_tail_coordinates(1,2,nn) = particles(n)%y |
---|
579 | ! particle_tail_coordinates(1,3,nn) = particles(n)%z |
---|
580 | ! particle_tail_coordinates(1,4,nn) = particles(n)%class |
---|
581 | ! particles(n)%tailpoints = 1 |
---|
582 | ! IF ( minimum_tailpoint_distance /= 0.0_wp ) THEN |
---|
583 | ! particle_tail_coordinates(2,1,nn) = particles(n)%x |
---|
584 | ! particle_tail_coordinates(2,2,nn) = particles(n)%y |
---|
585 | ! particle_tail_coordinates(2,3,nn) = particles(n)%z |
---|
586 | ! particle_tail_coordinates(2,4,nn) = particles(n)%class |
---|
587 | ! particle_tail_coordinates(1:2,5,nn) = 0.0_wp |
---|
588 | ! particles(n)%tailpoints = 2 |
---|
589 | ! ENDIF |
---|
590 | ! |
---|
591 | ! ENDIF |
---|
592 | ! ENDDO |
---|
593 | ! ENDIF |
---|
594 | ! |
---|
595 | ! ! |
---|
596 | ! !-- Plot initial positions of particles (only if particle advection is |
---|
597 | ! !-- switched on from the beginning of the simulation (t=0)) |
---|
598 | ! IF ( particle_advection_start == 0.0_wp ) CALL data_output_dvrp |
---|
599 | |
---|
600 | ENDIF |
---|
601 | |
---|
602 | ! |
---|
603 | !-- To avoid programm abort, assign particles array to the local version of |
---|
604 | !-- first grid cell |
---|
605 | number_of_particles = prt_count(nzb+1,nys,nxl) |
---|
606 | particles => grid_particles(nzb+1,nys,nxl)%particles(1:number_of_particles) |
---|
607 | |
---|
608 | ! |
---|
609 | !-- Formats |
---|
610 | 8000 FORMAT (I6,1X,F7.2,4X,I10,71X,I10) |
---|
611 | |
---|
612 | END SUBROUTINE lpm_init |
---|
613 | |
---|
614 | !------------------------------------------------------------------------------! |
---|
615 | ! Description: |
---|
616 | ! ------------ |
---|
617 | !> @todo Missing subroutine description. |
---|
618 | !------------------------------------------------------------------------------! |
---|
619 | SUBROUTINE lpm_create_particle (phase) |
---|
620 | |
---|
621 | USE lpm_exchange_horiz_mod, & |
---|
622 | ONLY: lpm_exchange_horiz, lpm_move_particle, realloc_particles_array |
---|
623 | |
---|
624 | USE lpm_pack_arrays_mod, & |
---|
625 | ONLY: lpm_pack_all_arrays |
---|
626 | |
---|
627 | IMPLICIT NONE |
---|
628 | |
---|
629 | INTEGER(iwp) :: alloc_size !< |
---|
630 | INTEGER(iwp) :: i !< |
---|
631 | INTEGER(iwp) :: ip !< |
---|
632 | INTEGER(iwp) :: j !< |
---|
633 | INTEGER(iwp) :: jp !< |
---|
634 | INTEGER(iwp) :: kp !< |
---|
635 | INTEGER(iwp) :: loop_stride !< |
---|
636 | INTEGER(iwp) :: n !< |
---|
637 | INTEGER(iwp) :: new_size !< |
---|
638 | INTEGER(iwp) :: nn !< |
---|
639 | |
---|
640 | INTEGER(iwp), INTENT(IN) :: phase !< |
---|
641 | |
---|
642 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: local_count !< |
---|
643 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: local_start !< |
---|
644 | |
---|
645 | LOGICAL :: first_stride !< |
---|
646 | |
---|
647 | REAL(wp) :: pos_x !< |
---|
648 | REAL(wp) :: pos_y !< |
---|
649 | REAL(wp) :: pos_z !< |
---|
650 | |
---|
651 | TYPE(particle_type),TARGET :: tmp_particle !< |
---|
652 | |
---|
653 | ! |
---|
654 | !-- Calculate particle positions and store particle attributes, if |
---|
655 | !-- particle is situated on this PE |
---|
656 | DO loop_stride = 1, 2 |
---|
657 | first_stride = (loop_stride == 1) |
---|
658 | IF ( first_stride ) THEN |
---|
659 | local_count = 0 ! count number of particles |
---|
660 | ELSE |
---|
661 | local_count = prt_count ! Start address of new particles |
---|
662 | ENDIF |
---|
663 | |
---|
664 | n = 0 |
---|
665 | DO i = 1, number_of_particle_groups |
---|
666 | |
---|
667 | pos_z = psb(i) |
---|
668 | |
---|
669 | DO WHILE ( pos_z <= pst(i) ) |
---|
670 | |
---|
671 | pos_y = pss(i) |
---|
672 | |
---|
673 | DO WHILE ( pos_y <= psn(i) ) |
---|
674 | |
---|
675 | IF ( pos_y >= ( nys - 0.5_wp ) * dy .AND. & |
---|
676 | pos_y < ( nyn + 0.5_wp ) * dy ) THEN |
---|
677 | |
---|
678 | pos_x = psl(i) |
---|
679 | |
---|
680 | xloop: DO WHILE ( pos_x <= psr(i) ) |
---|
681 | |
---|
682 | IF ( pos_x >= ( nxl - 0.5_wp ) * dx .AND. & |
---|
683 | pos_x < ( nxr + 0.5_wp ) * dx ) THEN |
---|
684 | |
---|
685 | DO j = 1, particles_per_point |
---|
686 | |
---|
687 | n = n + 1 |
---|
688 | #if defined( __twocachelines ) |
---|
689 | tmp_particle%x = pos_x |
---|
690 | tmp_particle%y = pos_y |
---|
691 | tmp_particle%z = pos_z |
---|
692 | tmp_particle%age = 0.0_sp |
---|
693 | tmp_particle%age_m = 0.0_sp |
---|
694 | tmp_particle%dt_sum = 0.0_wp |
---|
695 | tmp_particle%dvrp_psize = dvrp_psize |
---|
696 | tmp_particle%e_m = 0.0_sp |
---|
697 | IF ( curvature_solution_effects ) THEN |
---|
698 | ! |
---|
699 | !-- Initial values (internal timesteps, derivative) |
---|
700 | !-- for Rosenbrock method |
---|
701 | tmp_particle%rvar1 = 1.0E-12_wp |
---|
702 | tmp_particle%rvar2 = 1.0E-3_wp |
---|
703 | tmp_particle%rvar3 = -9999999.9_wp |
---|
704 | ELSE |
---|
705 | ! |
---|
706 | !-- Initial values for SGS velocities |
---|
707 | tmp_particle%rvar1 = 0.0_wp |
---|
708 | tmp_particle%rvar2 = 0.0_wp |
---|
709 | tmp_particle%rvar3 = 0.0_wp |
---|
710 | ENDIF |
---|
711 | tmp_particle%speed_x = 0.0_sp |
---|
712 | tmp_particle%speed_y = 0.0_sp |
---|
713 | tmp_particle%speed_z = 0.0_sp |
---|
714 | tmp_particle%origin_x = pos_x |
---|
715 | tmp_particle%origin_y = pos_y |
---|
716 | tmp_particle%origin_z = pos_z |
---|
717 | tmp_particle%radius = particle_groups(i)%radius |
---|
718 | tmp_particle%weight_factor = initial_weighting_factor |
---|
719 | tmp_particle%class = 1 |
---|
720 | tmp_particle%group = i |
---|
721 | tmp_particle%tailpoints = 0 |
---|
722 | tmp_particle%particle_mask = .TRUE. |
---|
723 | #else |
---|
724 | tmp_particle%x = pos_x |
---|
725 | tmp_particle%y = pos_y |
---|
726 | tmp_particle%z = pos_z |
---|
727 | tmp_particle%age = 0.0_wp |
---|
728 | tmp_particle%age_m = 0.0_wp |
---|
729 | tmp_particle%dt_sum = 0.0_wp |
---|
730 | tmp_particle%dvrp_psize = dvrp_psize |
---|
731 | tmp_particle%e_m = 0.0_wp |
---|
732 | IF ( curvature_solution_effects ) THEN |
---|
733 | ! |
---|
734 | !-- Initial values (internal timesteps, derivative) |
---|
735 | !-- for Rosenbrock method |
---|
736 | tmp_particle%rvar1 = 1.0E-12_wp |
---|
737 | tmp_particle%rvar2 = 1.0E-3_wp |
---|
738 | tmp_particle%rvar3 = -9999999.9_wp |
---|
739 | ELSE |
---|
740 | ! |
---|
741 | !-- Initial values for SGS velocities |
---|
742 | tmp_particle%rvar1 = 0.0_wp |
---|
743 | tmp_particle%rvar2 = 0.0_wp |
---|
744 | tmp_particle%rvar3 = 0.0_wp |
---|
745 | ENDIF |
---|
746 | tmp_particle%speed_x = 0.0_wp |
---|
747 | tmp_particle%speed_y = 0.0_wp |
---|
748 | tmp_particle%speed_z = 0.0_wp |
---|
749 | tmp_particle%origin_x = pos_x |
---|
750 | tmp_particle%origin_y = pos_y |
---|
751 | tmp_particle%origin_z = pos_z |
---|
752 | tmp_particle%radius = particle_groups(i)%radius |
---|
753 | tmp_particle%weight_factor = initial_weighting_factor |
---|
754 | tmp_particle%class = 1 |
---|
755 | tmp_particle%group = i |
---|
756 | tmp_particle%tailpoints = 0 |
---|
757 | tmp_particle%particle_mask = .TRUE. |
---|
758 | #endif |
---|
759 | IF ( use_particle_tails .AND. & |
---|
760 | MOD( n, skip_particles_for_tail ) == 0 ) THEN |
---|
761 | number_of_tails = number_of_tails + 1 |
---|
762 | ! |
---|
763 | !-- This is a temporary provisional setting (see |
---|
764 | !-- further below!) |
---|
765 | tmp_particle%tail_id = number_of_tails |
---|
766 | ELSE |
---|
767 | tmp_particle%tail_id = 0 |
---|
768 | ENDIF |
---|
769 | ! |
---|
770 | !-- Determine the grid indices of the particle position |
---|
771 | ip = ( tmp_particle%x + 0.5_wp * dx ) * ddx |
---|
772 | jp = ( tmp_particle%y + 0.5_wp * dy ) * ddy |
---|
773 | kp = tmp_particle%z / dz + 1 + offset_ocean_nzt |
---|
774 | |
---|
775 | IF ( seed_follows_topography ) THEN |
---|
776 | ! |
---|
777 | !-- Particle height is given relative to topography |
---|
778 | kp = kp + nzb_w_inner(jp,ip) |
---|
779 | tmp_particle%z = tmp_particle%z + zw(kp) |
---|
780 | IF ( kp > nzt ) THEN |
---|
781 | pos_x = pos_x + pdx(i) |
---|
782 | CYCLE xloop |
---|
783 | ENDIF |
---|
784 | ENDIF |
---|
785 | |
---|
786 | local_count(kp,jp,ip) = local_count(kp,jp,ip) + 1 |
---|
787 | IF ( .NOT. first_stride ) THEN |
---|
788 | IF ( ip < nxl .OR. jp < nys .OR. kp < nzb+1 ) THEN |
---|
789 | write(6,*) 'xl ',ip,jp,kp,nxl,nys,nzb+1 |
---|
790 | ENDIF |
---|
791 | IF ( ip > nxr .OR. jp > nyn .OR. kp > nzt ) THEN |
---|
792 | write(6,*) 'xu ',ip,jp,kp,nxr,nyn,nzt |
---|
793 | ENDIF |
---|
794 | grid_particles(kp,jp,ip)%particles(local_count(kp,jp,ip)) = tmp_particle |
---|
795 | ENDIF |
---|
796 | ENDDO |
---|
797 | |
---|
798 | ENDIF |
---|
799 | |
---|
800 | pos_x = pos_x + pdx(i) |
---|
801 | |
---|
802 | ENDDO xloop |
---|
803 | |
---|
804 | ENDIF |
---|
805 | |
---|
806 | pos_y = pos_y + pdy(i) |
---|
807 | |
---|
808 | ENDDO |
---|
809 | |
---|
810 | pos_z = pos_z + pdz(i) |
---|
811 | |
---|
812 | ENDDO |
---|
813 | |
---|
814 | ENDDO |
---|
815 | |
---|
816 | IF ( first_stride ) THEN |
---|
817 | DO ip = nxl, nxr |
---|
818 | DO jp = nys, nyn |
---|
819 | DO kp = nzb+1, nzt |
---|
820 | IF ( phase == PHASE_INIT ) THEN |
---|
821 | IF ( local_count(kp,jp,ip) > 0 ) THEN |
---|
822 | alloc_size = MAX( INT( local_count(kp,jp,ip) * & |
---|
823 | ( 1.0_wp + alloc_factor / 100.0_wp ) ), & |
---|
824 | min_nr_particle ) |
---|
825 | ELSE |
---|
826 | alloc_size = min_nr_particle |
---|
827 | ENDIF |
---|
828 | ALLOCATE(grid_particles(kp,jp,ip)%particles(1:alloc_size)) |
---|
829 | DO n = 1, alloc_size |
---|
830 | grid_particles(kp,jp,ip)%particles(n) = zero_particle |
---|
831 | ENDDO |
---|
832 | ELSEIF ( phase == PHASE_RELEASE ) THEN |
---|
833 | IF ( local_count(kp,jp,ip) > 0 ) THEN |
---|
834 | new_size = local_count(kp,jp,ip) + prt_count(kp,jp,ip) |
---|
835 | alloc_size = MAX( INT( new_size * ( 1.0_wp + & |
---|
836 | alloc_factor / 100.0_wp ) ), min_nr_particle ) |
---|
837 | IF( alloc_size > SIZE( grid_particles(kp,jp,ip)%particles) ) THEN |
---|
838 | CALL realloc_particles_array(ip,jp,kp,alloc_size) |
---|
839 | ENDIF |
---|
840 | ENDIF |
---|
841 | ENDIF |
---|
842 | ENDDO |
---|
843 | ENDDO |
---|
844 | ENDDO |
---|
845 | ENDIF |
---|
846 | ENDDO |
---|
847 | |
---|
848 | local_start = prt_count+1 |
---|
849 | prt_count = local_count |
---|
850 | ! |
---|
851 | !-- Add random fluctuation to particle positions |
---|
852 | IF ( random_start_position ) THEN |
---|
853 | DO ip = nxl, nxr |
---|
854 | DO jp = nys, nyn |
---|
855 | DO kp = nzb+1, nzt |
---|
856 | number_of_particles = prt_count(kp,jp,ip) |
---|
857 | IF ( number_of_particles <= 0 ) CYCLE |
---|
858 | particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles) |
---|
859 | |
---|
860 | DO n = local_start(kp,jp,ip), number_of_particles !Move only new particles |
---|
861 | IF ( psl(particles(n)%group) /= psr(particles(n)%group) ) THEN |
---|
862 | particles(n)%x = particles(n)%x + & |
---|
863 | ( random_function( iran_part ) - 0.5_wp ) * & |
---|
864 | pdx(particles(n)%group) |
---|
865 | ENDIF |
---|
866 | IF ( pss(particles(n)%group) /= psn(particles(n)%group) ) THEN |
---|
867 | particles(n)%y = particles(n)%y + & |
---|
868 | ( random_function( iran_part ) - 0.5_wp ) * & |
---|
869 | pdy(particles(n)%group) |
---|
870 | ENDIF |
---|
871 | IF ( psb(particles(n)%group) /= pst(particles(n)%group) ) THEN |
---|
872 | particles(n)%z = particles(n)%z + & |
---|
873 | ( random_function( iran_part ) - 0.5_wp ) * & |
---|
874 | pdz(particles(n)%group) |
---|
875 | ENDIF |
---|
876 | ENDDO |
---|
877 | ! |
---|
878 | !-- Identify particles located outside the model domain |
---|
879 | CALL lpm_boundary_conds( 'bottom/top' ) |
---|
880 | ENDDO |
---|
881 | ENDDO |
---|
882 | ENDDO |
---|
883 | ! |
---|
884 | !-- Exchange particles between grid cells and processors |
---|
885 | CALL lpm_move_particle |
---|
886 | CALL lpm_exchange_horiz |
---|
887 | |
---|
888 | ENDIF |
---|
889 | ! |
---|
890 | !-- In case of random_start_position, delete particles identified by |
---|
891 | !-- lpm_exchange_horiz and lpm_boundary_conds. Then sort particles into blocks, |
---|
892 | !-- which is needed for a fast interpolation of the LES fields on the particle |
---|
893 | !-- position. |
---|
894 | CALL lpm_pack_all_arrays |
---|
895 | |
---|
896 | ! |
---|
897 | !-- Determine maximum number of particles (i.e., all possible particles that |
---|
898 | !-- have been allocated) and the current number of particles |
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899 | DO ip = nxl, nxr |
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900 | DO jp = nys, nyn |
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901 | DO kp = nzb+1, nzt |
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902 | maximum_number_of_particles = maximum_number_of_particles & |
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903 | + SIZE(grid_particles(kp,jp,ip)%particles) |
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904 | number_of_particles = number_of_particles & |
---|
905 | + prt_count(kp,jp,ip) |
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906 | ENDDO |
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907 | ENDDO |
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908 | ENDDO |
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909 | ! |
---|
910 | !-- Calculate the number of particles and tails of the total domain |
---|
911 | #if defined( __parallel ) |
---|
912 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
913 | CALL MPI_ALLREDUCE( number_of_particles, total_number_of_particles, 1, & |
---|
914 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
---|
915 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
916 | CALL MPI_ALLREDUCE( number_of_tails, total_number_of_tails, 1, & |
---|
917 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
---|
918 | #else |
---|
919 | total_number_of_particles = number_of_particles |
---|
920 | total_number_of_tails = number_of_tails |
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921 | #endif |
---|
922 | |
---|
923 | RETURN |
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924 | |
---|
925 | END SUBROUTINE lpm_create_particle |
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926 | |
---|
927 | END MODULE lpm_init_mod |
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