1 | SUBROUTINE init_particles |
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2 | |
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3 | !------------------------------------------------------------------------------! |
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4 | ! Current revisions: |
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5 | ! ----------------- |
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6 | ! array particles implemented as pointer |
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7 | ! |
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8 | ! Former revisions: |
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9 | ! ----------------- |
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10 | ! $Id: init_particles.f90 792 2011-12-01 00:23:23Z maronga $ |
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11 | ! |
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12 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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13 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng for allocation |
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14 | ! of arrays. |
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15 | ! |
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16 | ! 622 2010-12-10 08:08:13Z raasch |
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17 | ! optional barriers included in order to speed up collective operations |
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18 | ! |
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19 | ! 336 2009-06-10 11:19:35Z raasch |
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20 | ! Maximum number of tails is calculated from maximum number of particles and |
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21 | ! skip_particles_for_tail, |
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22 | ! output of messages replaced by message handling routine |
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23 | ! Bugfix: arrays for tails are allocated with a minimum size of 10 tails if |
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24 | ! there is no tail initially |
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25 | ! |
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26 | ! 150 2008-02-29 08:19:58Z raasch |
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27 | ! Setting offset_ocean_* needed for calculating vertical indices within ocean |
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28 | ! runs |
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29 | ! |
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30 | ! 117 2007-10-11 03:27:59Z raasch |
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31 | ! Sorting of particles only in case of cloud droplets |
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32 | ! |
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33 | ! 106 2007-08-16 14:30:26Z raasch |
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34 | ! variable iran replaced by iran_part |
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35 | ! |
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36 | ! 82 2007-04-16 15:40:52Z raasch |
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37 | ! Preprocessor directives for old systems removed |
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38 | ! |
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39 | ! 70 2007-03-18 23:46:30Z raasch |
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40 | ! displacements for mpi_particle_type changed, age_m initialized, |
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41 | ! particles-package is now part of the default code |
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42 | ! |
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43 | ! 16 2007-02-15 13:16:47Z raasch |
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44 | ! Bugfix: MPI_REAL in MPI_ALLREDUCE replaced by MPI_INTEGER |
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45 | ! |
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46 | ! r4 | raasch | 2007-02-13 12:33:16 +0100 (Tue, 13 Feb 2007) |
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47 | ! RCS Log replace by Id keyword, revision history cleaned up |
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48 | ! |
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49 | ! Revision 1.24 2007/02/11 13:00:17 raasch |
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50 | ! Bugfix: allocation of tail_mask and new_tail_id in case of restart-runs |
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51 | ! Bugfix: __ was missing in a cpp-directive |
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52 | ! |
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53 | ! Revision 1.1 1999/11/25 16:22:38 raasch |
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54 | ! Initial revision |
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55 | ! |
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56 | ! |
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57 | ! Description: |
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58 | ! ------------ |
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59 | ! This routine initializes a set of particles and their attributes (position, |
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60 | ! radius, ..). Advection of these particles is carried out by advec_particles, |
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61 | ! plotting is done in data_output_dvrp. |
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62 | !------------------------------------------------------------------------------! |
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63 | |
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64 | USE arrays_3d |
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65 | USE control_parameters |
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66 | USE dvrp_variables |
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67 | USE grid_variables |
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68 | USE indices |
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69 | USE particle_attributes |
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70 | USE pegrid |
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71 | USE random_function_mod |
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72 | |
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73 | |
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74 | IMPLICIT NONE |
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75 | |
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76 | CHARACTER (LEN=10) :: particle_binary_version, version_on_file |
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77 | |
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78 | INTEGER :: i, j, n, nn |
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79 | #if defined( __parallel ) |
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80 | INTEGER, DIMENSION(3) :: blocklengths, displacements, types |
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81 | #endif |
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82 | LOGICAL :: uniform_particles_l |
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83 | REAL :: factor, pos_x, pos_y, pos_z, value |
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84 | |
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85 | |
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86 | #if defined( __parallel ) |
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87 | ! |
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88 | !-- Define MPI derived datatype for FORTRAN datatype particle_type (see module |
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89 | !-- particle_attributes). Integer length is 4 byte, Real is 8 byte |
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90 | blocklengths(1) = 19; blocklengths(2) = 4; blocklengths(3) = 1 |
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91 | displacements(1) = 0; displacements(2) = 152; displacements(3) = 168 |
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92 | |
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93 | types(1) = MPI_REAL |
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94 | types(2) = MPI_INTEGER |
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95 | types(3) = MPI_UB |
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96 | CALL MPI_TYPE_STRUCT( 3, blocklengths, displacements, types, & |
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97 | mpi_particle_type, ierr ) |
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98 | CALL MPI_TYPE_COMMIT( mpi_particle_type, ierr ) |
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99 | #endif |
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100 | |
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101 | ! |
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102 | !-- In case of oceans runs, the vertical index calculations need an offset, |
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103 | !-- because otherwise the k indices will become negative |
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104 | IF ( ocean ) THEN |
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105 | offset_ocean_nzt = nzt |
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106 | offset_ocean_nzt_m1 = nzt - 1 |
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107 | ENDIF |
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108 | |
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109 | |
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110 | ! |
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111 | !-- Check the number of particle groups. |
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112 | IF ( number_of_particle_groups > max_number_of_particle_groups ) THEN |
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113 | WRITE( message_string, * ) 'max_number_of_particle_groups =', & |
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114 | max_number_of_particle_groups , & |
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115 | '&number_of_particle_groups reset to ', & |
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116 | max_number_of_particle_groups |
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117 | CALL message( 'init_particles', 'PA0213', 0, 1, 0, 6, 0 ) |
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118 | number_of_particle_groups = max_number_of_particle_groups |
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119 | ENDIF |
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120 | |
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121 | ! |
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122 | !-- Set default start positions, if necessary |
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123 | IF ( psl(1) == 9999999.9 ) psl(1) = -0.5 * dx |
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124 | IF ( psr(1) == 9999999.9 ) psr(1) = ( nx + 0.5 ) * dx |
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125 | IF ( pss(1) == 9999999.9 ) pss(1) = -0.5 * dy |
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126 | IF ( psn(1) == 9999999.9 ) psn(1) = ( ny + 0.5 ) * dy |
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127 | IF ( psb(1) == 9999999.9 ) psb(1) = zu(nz/2) |
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128 | IF ( pst(1) == 9999999.9 ) pst(1) = psb(1) |
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129 | |
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130 | IF ( pdx(1) == 9999999.9 .OR. pdx(1) == 0.0 ) pdx(1) = dx |
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131 | IF ( pdy(1) == 9999999.9 .OR. pdy(1) == 0.0 ) pdy(1) = dy |
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132 | IF ( pdz(1) == 9999999.9 .OR. pdz(1) == 0.0 ) pdz(1) = zu(2) - zu(1) |
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133 | |
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134 | DO j = 2, number_of_particle_groups |
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135 | IF ( psl(j) == 9999999.9 ) psl(j) = psl(j-1) |
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136 | IF ( psr(j) == 9999999.9 ) psr(j) = psr(j-1) |
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137 | IF ( pss(j) == 9999999.9 ) pss(j) = pss(j-1) |
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138 | IF ( psn(j) == 9999999.9 ) psn(j) = psn(j-1) |
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139 | IF ( psb(j) == 9999999.9 ) psb(j) = psb(j-1) |
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140 | IF ( pst(j) == 9999999.9 ) pst(j) = pst(j-1) |
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141 | IF ( pdx(j) == 9999999.9 .OR. pdx(j) == 0.0 ) pdx(j) = pdx(j-1) |
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142 | IF ( pdy(j) == 9999999.9 .OR. pdy(j) == 0.0 ) pdy(j) = pdy(j-1) |
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143 | IF ( pdz(j) == 9999999.9 .OR. pdz(j) == 0.0 ) pdz(j) = pdz(j-1) |
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144 | ENDDO |
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145 | |
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146 | ! |
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147 | !-- For the first model run of a possible job chain initialize the |
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148 | !-- particles, otherwise read the particle data from file. |
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149 | IF ( TRIM( initializing_actions ) == 'read_restart_data' & |
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150 | .AND. read_particles_from_restartfile ) THEN |
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151 | |
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152 | ! |
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153 | !-- Read particle data from previous model run. |
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154 | !-- First open the input unit. |
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155 | IF ( myid_char == '' ) THEN |
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156 | OPEN ( 90, FILE='PARTICLE_RESTART_DATA_IN'//myid_char, & |
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157 | FORM='UNFORMATTED' ) |
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158 | ELSE |
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159 | OPEN ( 90, FILE='PARTICLE_RESTART_DATA_IN/'//myid_char, & |
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160 | FORM='UNFORMATTED' ) |
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161 | ENDIF |
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162 | |
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163 | ! |
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164 | !-- First compare the version numbers |
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165 | READ ( 90 ) version_on_file |
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166 | particle_binary_version = '3.0' |
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167 | IF ( TRIM( version_on_file ) /= TRIM( particle_binary_version ) ) THEN |
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168 | message_string = 'version mismatch concerning data from prior ' // & |
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169 | 'run &version on file = "' // & |
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170 | TRIM( version_on_file ) // & |
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171 | '&version in program = "' // & |
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172 | TRIM( particle_binary_version ) // '"' |
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173 | CALL message( 'init_particles', 'PA0214', 1, 2, 0, 6, 0 ) |
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174 | ENDIF |
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175 | |
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176 | ! |
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177 | !-- Read some particle parameters and the size of the particle arrays, |
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178 | !-- allocate them and read their contents. |
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179 | READ ( 90 ) bc_par_b, bc_par_lr, bc_par_ns, bc_par_t, & |
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180 | maximum_number_of_particles, maximum_number_of_tailpoints, & |
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181 | maximum_number_of_tails, number_of_initial_particles, & |
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182 | number_of_particles, number_of_particle_groups, & |
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183 | number_of_tails, particle_groups, time_prel, & |
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184 | time_write_particle_data, uniform_particles |
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185 | |
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186 | IF ( number_of_initial_particles /= 0 ) THEN |
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187 | ALLOCATE( initial_particles(1:number_of_initial_particles) ) |
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188 | READ ( 90 ) initial_particles |
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189 | ENDIF |
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190 | |
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191 | ALLOCATE( prt_count(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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192 | prt_start_index(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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193 | particle_mask(maximum_number_of_particles), & |
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194 | part_1(maximum_number_of_particles), & |
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195 | part_2(maximum_number_of_particles) ) |
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196 | |
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197 | part_1 = particle_type( 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, & |
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198 | 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, & |
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199 | 0.0, 0, 0, 0, 0 ) |
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200 | |
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201 | part_2 = particle_type( 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, & |
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202 | 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, & |
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203 | 0.0, 0, 0, 0, 0 ) |
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204 | |
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205 | sort_count = 0 |
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206 | |
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207 | particles => part_1 |
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208 | |
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209 | READ ( 90 ) prt_count, prt_start_index |
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210 | READ ( 90 ) particles |
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211 | |
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212 | IF ( use_particle_tails ) THEN |
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213 | ALLOCATE( particle_tail_coordinates(maximum_number_of_tailpoints,5, & |
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214 | maximum_number_of_tails), & |
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215 | new_tail_id(maximum_number_of_tails), & |
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216 | tail_mask(maximum_number_of_tails) ) |
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217 | READ ( 90 ) particle_tail_coordinates |
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218 | ENDIF |
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219 | |
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220 | CLOSE ( 90 ) |
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221 | |
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222 | ELSE |
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223 | |
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224 | ! |
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225 | !-- Allocate particle arrays and set attributes of the initial set of |
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226 | !-- particles, which can be also periodically released at later times. |
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227 | !-- Also allocate array for particle tail coordinates, if needed. |
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228 | ALLOCATE( prt_count(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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229 | prt_start_index(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
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230 | particle_mask(maximum_number_of_particles), & |
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231 | part_1(maximum_number_of_particles), & |
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232 | part_2(maximum_number_of_particles) ) |
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233 | |
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234 | particles => part_1 |
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235 | |
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236 | sort_count = 0 |
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237 | |
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238 | ! |
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239 | !-- Initialize all particles with dummy values (otherwise errors may |
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240 | !-- occur within restart runs). The reason for this is still not clear |
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241 | !-- and may be presumably caused by errors in the respective user-interface. |
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242 | particles = particle_type( 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, & |
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243 | 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, & |
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244 | 0.0, 0, 0, 0, 0 ) |
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245 | particle_groups = particle_groups_type( 0.0, 0.0, 0.0, 0.0 ) |
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246 | |
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247 | ! |
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248 | !-- Set the default particle size used for dvrp plots |
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249 | IF ( dvrp_psize == 9999999.9 ) dvrp_psize = 0.2 * dx |
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250 | |
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251 | ! |
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252 | !-- Set values for the density ratio and radius for all particle |
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253 | !-- groups, if necessary |
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254 | IF ( density_ratio(1) == 9999999.9 ) density_ratio(1) = 0.0 |
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255 | IF ( radius(1) == 9999999.9 ) radius(1) = 0.0 |
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256 | DO i = 2, number_of_particle_groups |
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257 | IF ( density_ratio(i) == 9999999.9 ) THEN |
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258 | density_ratio(i) = density_ratio(i-1) |
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259 | ENDIF |
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260 | IF ( radius(i) == 9999999.9 ) radius(i) = radius(i-1) |
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261 | ENDDO |
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262 | |
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263 | DO i = 1, number_of_particle_groups |
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264 | IF ( density_ratio(i) /= 0.0 .AND. radius(i) == 0 ) THEN |
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265 | WRITE( message_string, * ) 'particle group #', i, 'has a', & |
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266 | 'density ratio /= 0 but radius = 0' |
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267 | CALL message( 'init_particles', 'PA0215', 1, 2, 0, 6, 0 ) |
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268 | ENDIF |
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269 | particle_groups(i)%density_ratio = density_ratio(i) |
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270 | particle_groups(i)%radius = radius(i) |
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271 | ENDDO |
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272 | |
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273 | ! |
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274 | !-- Calculate particle positions and store particle attributes, if |
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275 | !-- particle is situated on this PE |
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276 | n = 0 |
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277 | |
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278 | DO i = 1, number_of_particle_groups |
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279 | |
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280 | pos_z = psb(i) |
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281 | |
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282 | DO WHILE ( pos_z <= pst(i) ) |
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283 | |
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284 | pos_y = pss(i) |
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285 | |
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286 | DO WHILE ( pos_y <= psn(i) ) |
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287 | |
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288 | IF ( pos_y >= ( nys - 0.5 ) * dy .AND. & |
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289 | pos_y < ( nyn + 0.5 ) * dy ) THEN |
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290 | |
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291 | pos_x = psl(i) |
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292 | |
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293 | DO WHILE ( pos_x <= psr(i) ) |
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294 | |
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295 | IF ( pos_x >= ( nxl - 0.5 ) * dx .AND. & |
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296 | pos_x < ( nxr + 0.5 ) * dx ) THEN |
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297 | |
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298 | DO j = 1, particles_per_point |
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299 | |
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300 | n = n + 1 |
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301 | IF ( n > maximum_number_of_particles ) THEN |
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302 | WRITE( message_string, * ) 'number of initial', & |
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303 | 'particles (', n, ') exceeds', & |
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304 | '&maximum_number_of_particles (', & |
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305 | maximum_number_of_particles, ') on PE ', & |
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306 | myid |
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307 | CALL message( 'init_particles', 'PA0216', & |
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308 | 2, 2, -1, 6, 1 ) |
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309 | ENDIF |
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310 | particles(n)%x = pos_x |
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311 | particles(n)%y = pos_y |
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312 | particles(n)%z = pos_z |
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313 | particles(n)%age = 0.0 |
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314 | particles(n)%age_m = 0.0 |
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315 | particles(n)%dt_sum = 0.0 |
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316 | particles(n)%dvrp_psize = dvrp_psize |
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317 | particles(n)%e_m = 0.0 |
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318 | particles(n)%speed_x = 0.0 |
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319 | particles(n)%speed_x_sgs = 0.0 |
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320 | particles(n)%speed_y = 0.0 |
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321 | particles(n)%speed_y_sgs = 0.0 |
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322 | particles(n)%speed_z = 0.0 |
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323 | particles(n)%speed_z_sgs = 0.0 |
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324 | particles(n)%origin_x = pos_x |
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325 | particles(n)%origin_y = pos_y |
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326 | particles(n)%origin_z = pos_z |
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327 | particles(n)%radius = particle_groups(i)%radius |
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328 | particles(n)%weight_factor =initial_weighting_factor |
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329 | particles(n)%color = 1 |
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330 | particles(n)%group = i |
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331 | particles(n)%tailpoints = 0 |
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332 | IF ( use_particle_tails .AND. & |
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333 | MOD( n, skip_particles_for_tail ) == 0 ) THEN |
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334 | number_of_tails = number_of_tails + 1 |
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335 | ! |
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336 | !-- This is a temporary provisional setting (see |
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337 | !-- further below!) |
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338 | particles(n)%tail_id = number_of_tails |
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339 | ELSE |
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340 | particles(n)%tail_id = 0 |
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341 | ENDIF |
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342 | |
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343 | ENDDO |
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344 | |
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345 | ENDIF |
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346 | |
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347 | pos_x = pos_x + pdx(i) |
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348 | |
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349 | ENDDO |
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350 | |
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351 | ENDIF |
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352 | |
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353 | pos_y = pos_y + pdy(i) |
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354 | |
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355 | ENDDO |
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356 | |
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357 | pos_z = pos_z + pdz(i) |
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358 | |
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359 | ENDDO |
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360 | |
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361 | ENDDO |
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362 | |
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363 | number_of_initial_particles = n |
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364 | number_of_particles = n |
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365 | |
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366 | ! |
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367 | !-- Calculate the number of particles and tails of the total domain |
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368 | #if defined( __parallel ) |
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369 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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370 | CALL MPI_ALLREDUCE( number_of_particles, total_number_of_particles, 1, & |
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371 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
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372 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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373 | CALL MPI_ALLREDUCE( number_of_tails, total_number_of_tails, 1, & |
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374 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
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375 | #else |
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376 | total_number_of_particles = number_of_particles |
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377 | total_number_of_tails = number_of_tails |
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378 | #endif |
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379 | |
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380 | ! |
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381 | !-- Set a seed value for the random number generator to be exclusively |
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382 | !-- used for the particle code. The generated random numbers should be |
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383 | !-- different on the different PEs. |
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384 | iran_part = iran_part + myid |
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385 | |
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386 | ! |
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387 | !-- User modification of initial particles |
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388 | CALL user_init_particles |
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389 | |
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390 | ! |
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391 | !-- Store the initial set of particles for release at later times |
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392 | IF ( number_of_initial_particles /= 0 ) THEN |
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393 | ALLOCATE( initial_particles(1:number_of_initial_particles) ) |
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394 | initial_particles(1:number_of_initial_particles) = & |
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395 | particles(1:number_of_initial_particles) |
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396 | ENDIF |
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397 | |
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398 | ! |
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399 | !-- Add random fluctuation to particle positions |
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400 | IF ( random_start_position ) THEN |
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401 | |
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402 | DO n = 1, number_of_initial_particles |
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403 | IF ( psl(particles(n)%group) /= psr(particles(n)%group) ) THEN |
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404 | particles(n)%x = particles(n)%x + & |
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405 | ( random_function( iran_part ) - 0.5 ) * & |
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406 | pdx(particles(n)%group) |
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407 | IF ( particles(n)%x <= ( nxl - 0.5 ) * dx ) THEN |
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408 | particles(n)%x = ( nxl - 0.4999999999 ) * dx |
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409 | ELSEIF ( particles(n)%x >= ( nxr + 0.5 ) * dx ) THEN |
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410 | particles(n)%x = ( nxr + 0.4999999999 ) * dx |
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411 | ENDIF |
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412 | ENDIF |
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413 | IF ( pss(particles(n)%group) /= psn(particles(n)%group) ) THEN |
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414 | particles(n)%y = particles(n)%y + & |
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415 | ( random_function( iran_part ) - 0.5 ) * & |
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416 | pdy(particles(n)%group) |
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417 | IF ( particles(n)%y <= ( nys - 0.5 ) * dy ) THEN |
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418 | particles(n)%y = ( nys - 0.4999999999 ) * dy |
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419 | ELSEIF ( particles(n)%y >= ( nyn + 0.5 ) * dy ) THEN |
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420 | particles(n)%y = ( nyn + 0.4999999999 ) * dy |
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421 | ENDIF |
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422 | ENDIF |
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423 | IF ( psb(particles(n)%group) /= pst(particles(n)%group) ) THEN |
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424 | particles(n)%z = particles(n)%z + & |
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425 | ( random_function( iran_part ) - 0.5 ) * & |
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426 | pdz(particles(n)%group) |
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427 | ENDIF |
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428 | ENDDO |
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429 | ENDIF |
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430 | |
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431 | ! |
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432 | !-- Sort particles in the sequence the gridboxes are stored in the memory. |
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433 | !-- Only required if cloud droplets are used. |
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434 | IF ( cloud_droplets ) CALL sort_particles |
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435 | |
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436 | ! |
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437 | !-- Open file for statistical informations about particle conditions |
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438 | IF ( write_particle_statistics ) THEN |
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439 | CALL check_open( 80 ) |
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440 | WRITE ( 80, 8000 ) current_timestep_number, simulated_time, & |
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441 | number_of_initial_particles, & |
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442 | maximum_number_of_particles |
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443 | CALL close_file( 80 ) |
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444 | ENDIF |
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445 | |
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446 | ! |
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447 | !-- Check if particles are really uniform in color and radius (dvrp_size) |
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448 | !-- (uniform_particles is preset TRUE) |
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449 | IF ( uniform_particles ) THEN |
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450 | IF ( number_of_initial_particles == 0 ) THEN |
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451 | uniform_particles_l = .TRUE. |
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452 | ELSE |
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453 | n = number_of_initial_particles |
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454 | IF ( MINVAL( particles(1:n)%dvrp_psize ) == & |
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455 | MAXVAL( particles(1:n)%dvrp_psize ) .AND. & |
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456 | MINVAL( particles(1:n)%color ) == & |
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457 | MAXVAL( particles(1:n)%color ) ) THEN |
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458 | uniform_particles_l = .TRUE. |
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459 | ELSE |
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460 | uniform_particles_l = .FALSE. |
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461 | ENDIF |
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462 | ENDIF |
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463 | |
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464 | #if defined( __parallel ) |
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465 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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466 | CALL MPI_ALLREDUCE( uniform_particles_l, uniform_particles, 1, & |
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467 | MPI_LOGICAL, MPI_LAND, comm2d, ierr ) |
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468 | #else |
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469 | uniform_particles = uniform_particles_l |
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470 | #endif |
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471 | |
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472 | ENDIF |
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473 | |
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474 | ! |
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475 | !-- Particles will probably become none-uniform, if their size and color |
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476 | !-- will be determined by flow variables |
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477 | IF ( particle_color /= 'none' .OR. particle_dvrpsize /= 'none' ) THEN |
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478 | uniform_particles = .FALSE. |
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479 | ENDIF |
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480 | |
---|
481 | ! |
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482 | !-- Set the beginning of the particle tails and their age |
---|
483 | IF ( use_particle_tails ) THEN |
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484 | ! |
---|
485 | !-- Choose the maximum number of tails with respect to the maximum number |
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486 | !-- of particles and skip_particles_for_tail |
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487 | maximum_number_of_tails = maximum_number_of_particles / & |
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488 | skip_particles_for_tail |
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489 | |
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490 | ! |
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491 | !-- Create a minimum number of tails in case that there is no tail |
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492 | !-- initially (otherwise, index errors will occur when adressing the |
---|
493 | !-- arrays below) |
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494 | IF ( maximum_number_of_tails == 0 ) maximum_number_of_tails = 10 |
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495 | |
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496 | ALLOCATE( particle_tail_coordinates(maximum_number_of_tailpoints,5, & |
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497 | maximum_number_of_tails), & |
---|
498 | new_tail_id(maximum_number_of_tails), & |
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499 | tail_mask(maximum_number_of_tails) ) |
---|
500 | |
---|
501 | particle_tail_coordinates = 0.0 |
---|
502 | minimum_tailpoint_distance = minimum_tailpoint_distance**2 |
---|
503 | number_of_initial_tails = number_of_tails |
---|
504 | |
---|
505 | nn = 0 |
---|
506 | DO n = 1, number_of_particles |
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507 | ! |
---|
508 | !-- Only for those particles marked above with a provisional tail_id |
---|
509 | !-- tails will be created. Particles now get their final tail_id. |
---|
510 | IF ( particles(n)%tail_id /= 0 ) THEN |
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511 | |
---|
512 | nn = nn + 1 |
---|
513 | particles(n)%tail_id = nn |
---|
514 | |
---|
515 | particle_tail_coordinates(1,1,nn) = particles(n)%x |
---|
516 | particle_tail_coordinates(1,2,nn) = particles(n)%y |
---|
517 | particle_tail_coordinates(1,3,nn) = particles(n)%z |
---|
518 | particle_tail_coordinates(1,4,nn) = particles(n)%color |
---|
519 | particles(n)%tailpoints = 1 |
---|
520 | IF ( minimum_tailpoint_distance /= 0.0 ) THEN |
---|
521 | particle_tail_coordinates(2,1,nn) = particles(n)%x |
---|
522 | particle_tail_coordinates(2,2,nn) = particles(n)%y |
---|
523 | particle_tail_coordinates(2,3,nn) = particles(n)%z |
---|
524 | particle_tail_coordinates(2,4,nn) = particles(n)%color |
---|
525 | particle_tail_coordinates(1:2,5,nn) = 0.0 |
---|
526 | particles(n)%tailpoints = 2 |
---|
527 | ENDIF |
---|
528 | |
---|
529 | ENDIF |
---|
530 | ENDDO |
---|
531 | ENDIF |
---|
532 | |
---|
533 | ! |
---|
534 | !-- Plot initial positions of particles (only if particle advection is |
---|
535 | !-- switched on from the beginning of the simulation (t=0)) |
---|
536 | IF ( particle_advection_start == 0.0 ) CALL data_output_dvrp |
---|
537 | |
---|
538 | ENDIF |
---|
539 | |
---|
540 | ! |
---|
541 | !-- Check boundary condition and set internal variables |
---|
542 | SELECT CASE ( bc_par_b ) |
---|
543 | |
---|
544 | CASE ( 'absorb' ) |
---|
545 | ibc_par_b = 1 |
---|
546 | |
---|
547 | CASE ( 'reflect' ) |
---|
548 | ibc_par_b = 2 |
---|
549 | |
---|
550 | CASE DEFAULT |
---|
551 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
552 | 'bc_par_b = "', TRIM( bc_par_b ), '"' |
---|
553 | CALL message( 'init_particles', 'PA0217', 1, 2, 0, 6, 0 ) |
---|
554 | |
---|
555 | END SELECT |
---|
556 | SELECT CASE ( bc_par_t ) |
---|
557 | |
---|
558 | CASE ( 'absorb' ) |
---|
559 | ibc_par_t = 1 |
---|
560 | |
---|
561 | CASE ( 'reflect' ) |
---|
562 | ibc_par_t = 2 |
---|
563 | |
---|
564 | CASE DEFAULT |
---|
565 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
566 | 'bc_par_t = "', TRIM( bc_par_t ), '"' |
---|
567 | CALL message( 'init_particles', 'PA0218', 1, 2, 0, 6, 0 ) |
---|
568 | |
---|
569 | END SELECT |
---|
570 | SELECT CASE ( bc_par_lr ) |
---|
571 | |
---|
572 | CASE ( 'cyclic' ) |
---|
573 | ibc_par_lr = 0 |
---|
574 | |
---|
575 | CASE ( 'absorb' ) |
---|
576 | ibc_par_lr = 1 |
---|
577 | |
---|
578 | CASE ( 'reflect' ) |
---|
579 | ibc_par_lr = 2 |
---|
580 | |
---|
581 | CASE DEFAULT |
---|
582 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
583 | 'bc_par_lr = "', TRIM( bc_par_lr ), '"' |
---|
584 | CALL message( 'init_particles', 'PA0219', 1, 2, 0, 6, 0 ) |
---|
585 | |
---|
586 | END SELECT |
---|
587 | SELECT CASE ( bc_par_ns ) |
---|
588 | |
---|
589 | CASE ( 'cyclic' ) |
---|
590 | ibc_par_ns = 0 |
---|
591 | |
---|
592 | CASE ( 'absorb' ) |
---|
593 | ibc_par_ns = 1 |
---|
594 | |
---|
595 | CASE ( 'reflect' ) |
---|
596 | ibc_par_ns = 2 |
---|
597 | |
---|
598 | CASE DEFAULT |
---|
599 | WRITE( message_string, * ) 'unknown boundary condition ', & |
---|
600 | 'bc_par_ns = "', TRIM( bc_par_ns ), '"' |
---|
601 | CALL message( 'init_particles', 'PA0220', 1, 2, 0, 6, 0 ) |
---|
602 | |
---|
603 | END SELECT |
---|
604 | ! |
---|
605 | !-- Formats |
---|
606 | 8000 FORMAT (I6,1X,F7.2,4X,I6,71X,I6) |
---|
607 | |
---|
608 | END SUBROUTINE init_particles |
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