!> @file lpm_pack_arrays.f90 !------------------------------------------------------------------------------! ! This file is part of the PALM model system. ! ! PALM is free software: you can redistribute it and/or modify it under the ! terms of the GNU General Public License as published by the Free Software ! Foundation, either version 3 of the License, or (at your option) any later ! version. ! ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. ! ! You should have received a copy of the GNU General Public License along with ! PALM. If not, see . ! ! Copyright 1997-2018 Leibniz Universitaet Hannover !------------------------------------------------------------------------------! ! ! Current revisions: ! ------------------ ! ! ! Former revisions: ! ----------------- ! $Id: lpm_pack_arrays.f90 2801 2018-02-14 16:01:55Z kanani $ ! Introduce particle transfer in nested models. ! ! 2718 2018-01-02 08:49:38Z maronga ! Corrected "Former revisions" section ! ! 2696 2017-12-14 17:12:51Z kanani ! Change in file header (GPL part) ! ! 2628 2017-11-20 12:40:38Z schwenkel ! Enabled particle advection with grid stretching. ! ! 2609 2017-11-14 14:14:44Z schwenkel ! Integrated subroutine pack_and_sort into lpm_sort_in_subboxes ! ! 2606 2017-11-10 10:36:31Z schwenkel ! Changed particle box locations: center of particle box now coincides ! with scalar grid point of same index. ! Renamed module and subroutines: lpm_pack_arrays_mod -> lpm_pack_and_sort_mod ! lpm_pack_all_arrays -> lpm_sort_in_subboxes, lpm_pack_arrays -> lpm_pack ! lpm_sort -> lpm_sort_timeloop_done ! ! 2417 2017-09-06 15:22:27Z suehring ! New routine which sorts particles into particles that completed and not ! completed the LES timestep. ! ! 2101 2017-01-05 16:42:31Z suehring ! ! 2000 2016-08-20 18:09:15Z knoop ! Forced header and separation lines into 80 columns ! ! 1822 2016-04-07 07:49:42Z hoffmann ! Tails removed. Unused variables removed. ! ! 1685 2015-10-08 07:32:13Z raasch ! bugfix concerning vertical index calculation in case of ocean ! ! 1682 2015-10-07 23:56:08Z knoop ! Code annotations made doxygen readable ! ! 1359 2014-04-11 17:15:14Z hoffmann ! New particle structure integrated. ! Kind definition added to all floating point numbers. ! ! 1320 2014-03-20 08:40:49Z raasch ! ONLY-attribute added to USE-statements, ! kind-parameters added to all INTEGER and REAL declaration statements, ! kinds are defined in new module kinds, ! comment fields (!:) to be used for variable explanations added to ! all variable declaration statements ! ! 1036 2012-10-22 13:43:42Z raasch ! code put under GPL (PALM 3.9) ! ! 849 2012-03-15 10:35:09Z raasch ! initial revision (former part of advec_particles) ! ! ! Description: ! ------------ !> Pack particle arrays, which means eliminate those elements marked for !> deletion and move data with higher index values to these free indices. !> Determine the new number of particles. !> Moreover, particles are also sorted into groups finished and not finished !> its timestep. !------------------------------------------------------------------------------! MODULE lpm_pack_and_sort_mod USE particle_attributes, & ONLY: grid_particles, number_of_particles, offset_ocean_nzt, & particles, particle_type, prt_count PRIVATE PUBLIC lpm_sort_in_subboxes, lpm_pack, lpm_sort_timeloop_done INTERFACE lpm_sort_in_subboxes MODULE PROCEDURE lpm_sort_in_subboxes END INTERFACE lpm_sort_in_subboxes INTERFACE lpm_pack MODULE PROCEDURE lpm_pack END INTERFACE lpm_pack INTERFACE lpm_sort_timeloop_done MODULE PROCEDURE lpm_sort_timeloop_done END INTERFACE lpm_sort_timeloop_done CONTAINS !------------------------------------------------------------------------------! ! Description: ! ----------- !> Routine for the whole processor !> Sort all particles into the 8 respective subgrid boxes !------------------------------------------------------------------------------! SUBROUTINE lpm_sort_in_subboxes USE cpulog, & ONLY: cpu_log, log_point_s USE indices, & ONLY: nxl, nxr, nys, nyn, nzb, nzt USE kinds USE control_parameters, & ONLY: dz USE grid_variables, & ONLY: dx,dy,ddx, ddy USE arrays_3d, & ONLY: zu IMPLICIT NONE INTEGER(iwp) :: i !< INTEGER(iwp) :: ip !< INTEGER(iwp) :: is !< INTEGER(iwp) :: j !< INTEGER(iwp) :: jp !< INTEGER(iwp) :: k !< INTEGER(iwp) :: kp !< INTEGER(iwp) :: m !< INTEGER(iwp) :: n !< INTEGER(iwp) :: nn !< INTEGER(iwp) :: sort_index !< INTEGER(iwp), DIMENSION(0:7) :: sort_count !< TYPE(particle_type), DIMENSION(:,:), ALLOCATABLE :: sort_particles !< CALL cpu_log( log_point_s(51), 'lpm_sort_in_subboxes', 'start' ) DO ip = nxl, nxr DO jp = nys, nyn DO kp = nzb+1, nzt number_of_particles = prt_count(kp,jp,ip) IF ( number_of_particles <= 0 ) CYCLE particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles) nn = 0 sort_count = 0 ALLOCATE( sort_particles(number_of_particles, 0:7) ) DO n = 1, number_of_particles sort_index = 0 IF ( particles(n)%particle_mask ) THEN nn = nn + 1 ! !-- Sorting particles with a binary scheme !-- sort_index=111_2=7_10 -> particle at the left,south,bottom subgridbox !-- sort_index=000_2=0_10 -> particle at the right,north,top subgridbox !-- For this the center of the gridbox is calculated i = (particles(n)%x + 0.5_wp * dx) * ddx j = (particles(n)%y + 0.5_wp * dy) * ddy IF ( i == ip ) sort_index = sort_index + 4 IF ( j == jp ) sort_index = sort_index + 2 IF ( zu(kp) > particles(n)%z ) sort_index = sort_index + 1 sort_count(sort_index) = sort_count(sort_index) + 1 m = sort_count(sort_index) sort_particles(m,sort_index) = particles(n) sort_particles(m,sort_index)%block_nr = sort_index ENDIF ENDDO nn = 0 DO is = 0,7 grid_particles(kp,jp,ip)%start_index(is) = nn + 1 DO n = 1,sort_count(is) nn = nn + 1 particles(nn) = sort_particles(n,is) ENDDO grid_particles(kp,jp,ip)%end_index(is) = nn ENDDO number_of_particles = nn prt_count(kp,jp,ip) = number_of_particles DEALLOCATE(sort_particles) ENDDO ENDDO ENDDO CALL cpu_log( log_point_s(51), 'lpm_sort_in_subboxes', 'stop' ) END SUBROUTINE lpm_sort_in_subboxes !------------------------------------------------------------------------------! ! Description: ! ------------ !> Move all particles not marked for deletion to lowest indices (packing) !------------------------------------------------------------------------------! SUBROUTINE lpm_pack USE kinds IMPLICIT NONE INTEGER(iwp) :: n !< INTEGER(iwp) :: nn !< ! !-- Find out elements marked for deletion and move data from highest index !-- values to these free indices nn = number_of_particles DO WHILE ( .NOT. particles(nn)%particle_mask ) nn = nn-1 IF ( nn == 0 ) EXIT ENDDO IF ( nn > 0 ) THEN DO n = 1, number_of_particles IF ( .NOT. particles(n)%particle_mask ) THEN particles(n) = particles(nn) nn = nn - 1 DO WHILE ( .NOT. particles(nn)%particle_mask ) nn = nn-1 IF ( n == nn ) EXIT ENDDO ENDIF IF ( n == nn ) EXIT ENDDO ENDIF ! !-- The number of deleted particles has been determined in routines !-- lpm_boundary_conds, lpm_droplet_collision, and lpm_exchange_horiz number_of_particles = nn END SUBROUTINE lpm_pack !------------------------------------------------------------------------------! ! Description: ! ------------ !> Sort particles in each sub-grid box into two groups: particles that already !> completed the LES timestep, and particles that need further timestepping to !> complete the LES timestep. !------------------------------------------------------------------------------! SUBROUTINE lpm_sort_timeloop_done USE control_parameters, & ONLY: dt_3d USE indices, & ONLY: nxl, nxr, nys, nyn, nzb, nzt USE kinds IMPLICIT NONE INTEGER(iwp) :: end_index !< particle end index for each sub-box INTEGER(iwp) :: i !< index of particle grid box in x-direction INTEGER(iwp) :: j !< index of particle grid box in y-direction INTEGER(iwp) :: k !< index of particle grid box in z-direction INTEGER(iwp) :: n !< running index for number of particles INTEGER(iwp) :: nb !< index of subgrid boux INTEGER(iwp) :: nf !< indices for particles in each sub-box that already finalized their substeps INTEGER(iwp) :: nnf !< indices for particles in each sub-box that need further treatment INTEGER(iwp) :: num_finalized !< number of particles in each sub-box that already finalized their substeps INTEGER(iwp) :: start_index !< particle start index for each sub-box TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: sort_particles !< temporary particle array DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt number_of_particles = prt_count(k,j,i) IF ( number_of_particles <= 0 ) CYCLE particles => grid_particles(k,j,i)%particles(1:number_of_particles) DO nb = 0, 7 ! !-- Obtain start and end index for each subgrid box start_index = grid_particles(k,j,i)%start_index(nb) end_index = grid_particles(k,j,i)%end_index(nb) ! !-- Allocate temporary array used for sorting. ALLOCATE( sort_particles(start_index:end_index) ) ! !-- Determine number of particles already completed the LES !-- timestep, and write them into a temporary array. nf = start_index num_finalized = 0 DO n = start_index, end_index IF ( dt_3d - particles(n)%dt_sum < 1E-8_wp ) THEN sort_particles(nf) = particles(n) nf = nf + 1 num_finalized = num_finalized + 1 ENDIF ENDDO ! !-- Determine number of particles that not completed the LES !-- timestep, and write them into a temporary array. nnf = nf DO n = start_index, end_index IF ( dt_3d - particles(n)%dt_sum > 1E-8_wp ) THEN sort_particles(nnf) = particles(n) nnf = nnf + 1 ENDIF ENDDO ! !-- Write back sorted particles particles(start_index:end_index) = & sort_particles(start_index:end_index) ! !-- Determine updated start_index, used to masked already !-- completed particles. grid_particles(k,j,i)%start_index(nb) = & grid_particles(k,j,i)%start_index(nb) & + num_finalized ! !-- Deallocate dummy array DEALLOCATE ( sort_particles ) ! !-- Finally, if number of non-completed particles is non zero !-- in any of the sub-boxes, set control flag appropriately. IF ( nnf > nf ) & grid_particles(k,j,i)%time_loop_done = .FALSE. ENDDO ENDDO ENDDO ENDDO END SUBROUTINE lpm_sort_timeloop_done END MODULE lpm_pack_and_sort_mod