1 | SUBROUTINE lpm_sort_arrays |
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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 | ! |
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7 | ! |
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8 | ! Former revisions: |
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9 | ! ----------------- |
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10 | ! $Id: lpm_sort_arrays.f90 849 2012-03-15 10:35:09Z raasch $ |
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11 | ! |
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12 | ! |
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13 | ! Description: |
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14 | ! ------------ |
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15 | ! Sort particles in the sequence the grid boxes are stored in memory. |
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16 | !------------------------------------------------------------------------------! |
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17 | |
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18 | USE arrays_3d |
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19 | USE control_parameters |
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20 | USE cpulog |
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21 | USE grid_variables |
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22 | USE indices |
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23 | USE interfaces |
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24 | USE particle_attributes |
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25 | |
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26 | IMPLICIT NONE |
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27 | |
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28 | INTEGER :: i, ilow, j, k, n |
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29 | |
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30 | TYPE(particle_type), DIMENSION(:), POINTER :: particles_temp |
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31 | |
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32 | |
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33 | CALL cpu_log( log_point_s(47), 'lpm_sort_arrays', 'start' ) |
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34 | |
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35 | ! |
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36 | !-- Initialize counters and set pointer of the temporary array into which |
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37 | !-- particles are sorted to free memory |
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38 | prt_count = 0 |
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39 | sort_count = sort_count +1 |
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40 | |
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41 | SELECT CASE ( MOD( sort_count, 2 ) ) |
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42 | |
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43 | CASE ( 0 ) |
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44 | |
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45 | particles_temp => part_1 |
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46 | |
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47 | CASE ( 1 ) |
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48 | |
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49 | particles_temp => part_2 |
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50 | |
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51 | END SELECT |
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52 | |
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53 | ! |
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54 | !-- Count the particles per gridbox |
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55 | DO n = 1, number_of_particles |
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56 | |
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57 | i = ( particles(n)%x + 0.5 * dx ) * ddx |
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58 | j = ( particles(n)%y + 0.5 * dy ) * ddy |
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59 | k = particles(n)%z / dz + 1 + offset_ocean_nzt |
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60 | ! only exact if equidistant |
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61 | |
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62 | prt_count(k,j,i) = prt_count(k,j,i) + 1 |
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63 | |
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64 | IF ( i < nxl .OR. i > nxr .OR. j < nys .OR. j > nyn .OR. k < nzb+1 .OR. & |
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65 | k > nzt ) THEN |
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66 | WRITE( message_string, * ) ' particle out of range: i=', i, ' j=', & |
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67 | j, ' k=', k, & |
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68 | ' nxl=', nxl, ' nxr=', nxr, & |
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69 | ' nys=', nys, ' nyn=', nyn, & |
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70 | ' nzb=', nzb, ' nzt=', nzt |
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71 | CALL message( 'lpm_sort_arrays', 'PA0149', 1, 2, 0, 6, 0 ) |
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72 | ENDIF |
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73 | |
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74 | ENDDO |
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75 | |
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76 | ! |
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77 | !-- Calculate the lower indices of those ranges of the particles-array |
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78 | !-- containing particles which belong to the same gridpox i,j,k |
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79 | ilow = 1 |
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80 | DO i = nxl, nxr |
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81 | DO j = nys, nyn |
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82 | DO k = nzb+1, nzt |
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83 | prt_start_index(k,j,i) = ilow |
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84 | ilow = ilow + prt_count(k,j,i) |
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85 | ENDDO |
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86 | ENDDO |
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87 | ENDDO |
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88 | |
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89 | ! |
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90 | !-- Sorting the particles |
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91 | DO n = 1, number_of_particles |
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92 | |
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93 | i = ( particles(n)%x + 0.5 * dx ) * ddx |
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94 | j = ( particles(n)%y + 0.5 * dy ) * ddy |
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95 | k = particles(n)%z / dz + 1 + offset_ocean_nzt |
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96 | ! only exact if equidistant |
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97 | |
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98 | particles_temp(prt_start_index(k,j,i)) = particles(n) |
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99 | |
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100 | prt_start_index(k,j,i) = prt_start_index(k,j,i) + 1 |
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101 | |
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102 | ENDDO |
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103 | |
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104 | ! |
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105 | !-- Redirect the particles pointer to the sorted array |
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106 | SELECT CASE ( MOD( sort_count, 2 ) ) |
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107 | |
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108 | CASE ( 0 ) |
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109 | |
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110 | particles => part_1 |
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111 | |
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112 | CASE ( 1 ) |
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113 | |
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114 | particles => part_2 |
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115 | |
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116 | END SELECT |
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117 | |
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118 | ! |
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119 | !-- Reset the index array to the actual start position |
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120 | DO i = nxl, nxr |
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121 | DO j = nys, nyn |
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122 | DO k = nzb+1, nzt |
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123 | prt_start_index(k,j,i) = prt_start_index(k,j,i) - prt_count(k,j,i) |
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124 | ENDDO |
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125 | ENDDO |
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126 | ENDDO |
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127 | |
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128 | CALL cpu_log( log_point_s(47), 'lpm_sort_arrays', 'stop' ) |
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129 | |
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130 | |
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131 | END SUBROUTINE lpm_sort_arrays |
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