| 1 | SUBROUTINE lpm_pack_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_pack_arrays.f90 850 2012-03-15 12:09:25Z raasch $ |
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| 11 | ! |
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| 12 | ! 849 2012-03-15 10:35:09Z raasch |
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| 13 | ! initial revision (former part of advec_particles) |
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| 14 | ! |
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| 15 | ! |
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| 16 | ! Description: |
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| 17 | ! ------------ |
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| 18 | ! Pack particle and tail arrays, which means eliminate those elements marked for |
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| 19 | ! deletion and move data with higher index values to these free indices. |
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| 20 | ! Determine the new number of particles. |
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| 21 | !------------------------------------------------------------------------------! |
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| 22 | |
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| 23 | USE particle_attributes |
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| 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | |
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| 27 | INTEGER :: n, nd, nn |
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| 28 | |
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| 29 | |
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| 30 | ! |
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| 31 | !-- Find out elements marked for deletion and move data with higher index |
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| 32 | !-- values to these free indices |
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| 33 | nn = 0 |
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| 34 | nd = 0 |
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| 35 | |
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| 36 | DO n = 1, number_of_particles |
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| 37 | |
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| 38 | IF ( particle_mask(n) ) THEN |
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| 39 | nn = nn + 1 |
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| 40 | particles(nn) = particles(n) |
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| 41 | ELSE |
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| 42 | nd = nd + 1 |
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| 43 | ENDIF |
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| 44 | |
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| 45 | ENDDO |
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| 46 | ! |
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| 47 | !-- The number of deleted particles has been determined in routines |
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| 48 | !-- lpm_boundary_conds, lpm_droplet_collision, and lpm_exchange_horiz |
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| 49 | number_of_particles = number_of_particles - deleted_particles |
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| 50 | |
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| 51 | ! |
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| 52 | !-- Handle tail array in the same way, store the new tail ids and re-assign it |
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| 53 | !-- to the respective particles |
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| 54 | IF ( use_particle_tails ) THEN |
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| 55 | |
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| 56 | nn = 0 |
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| 57 | nd = 0 |
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| 58 | |
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| 59 | DO n = 1, number_of_tails |
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| 60 | |
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| 61 | IF ( tail_mask(n) ) THEN |
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| 62 | nn = nn + 1 |
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| 63 | particle_tail_coordinates(:,:,nn) = & |
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| 64 | particle_tail_coordinates(:,:,n) |
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| 65 | new_tail_id(n) = nn |
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| 66 | ELSE |
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| 67 | nd = nd + 1 |
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| 68 | ENDIF |
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| 69 | |
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| 70 | ENDDO |
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| 71 | |
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| 72 | DO n = 1, number_of_particles |
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| 73 | IF ( particles(n)%tail_id /= 0 ) THEN |
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| 74 | particles(n)%tail_id = new_tail_id(particles(n)%tail_id) |
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| 75 | ENDIF |
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| 76 | ENDDO |
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| 77 | |
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| 78 | ENDIF |
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| 79 | |
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| 80 | ! |
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| 81 | !-- The number of deleted tails has been determined in routines |
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| 82 | !-- lpm_boundary_conds and lpm_exchange_horiz |
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| 83 | number_of_tails = number_of_tails - deleted_tails |
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| 84 | |
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| 85 | |
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| 86 | END SUBROUTINE lpm_pack_arrays |
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