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source: palm/trunk/SOURCE/lpm_exchange_horiz.f90 @ 2610

Last change on this file since 2610 was 2606, checked in by schwenkel, 7 years ago
Modified particle box location and further changes in particle model
Property svn:keywords set to `Id`
File size: 47.8 KB

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1	!> @file lpm_exchange_horiz.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the
6	! terms of the GNU General Public License as published by the Free Software
7	! Foundation, either version 3 of the License, or (at your option) any later
8	! version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2017 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: lpm_exchange_horiz.f90 2606 2017-11-10 10:36:31Z raasch $
27	! Changed particle box locations: center of particle box now coincides
28	! with scalar grid point of same index.
29	! lpm_move_particle now moves inner particles that would leave the core
30	! to the respective boundary gridbox. Afterwards they get transferred by
31	! lpm_exchange_horiz. This allows particles to move more than one gridbox
32	! independent of domain composition.
33	! Renamed module and subroutines: lpm_pack_arrays_mod -> lpm_pack_and_sort_mod
34	! lpm_pack_all_arrays -> lpm_sort_in_subboxes, lpm_pack_arrays -> lpm_pack
35	! lpm_sort -> lpm_sort_timeloop_done
36	!
37	! 2330 2017-08-03 14:26:02Z schwenkel
38	! Bugfix: Also for gfortran compilable, function c_sizeof is not used.
39	!
40	! 2305 2017-07-06 11:18:47Z hoffmann
41	! Improved calculation of particle IDs.
42	!
43	! 2245 2017-06-02 14:37:10Z schwenkel
44	! Bugfix in Add_particles_to_gridcell:
45	! Apply boundary conditions also in y-direction
46	!
47	! 2151 2017-02-15 10:42:16Z schwenkel
48	! Bugfix in lpm_move_particle that prevents
49	! false production of additional particles
50	!
51	! 2000 2016-08-20 18:09:15Z knoop
52	! Forced header and separation lines into 80 columns
53	!
54	! 1936 2016-06-13 13:37:44Z suehring
55	! Deallocation of unused memory
56	!
57	! 1929 2016-06-09 16:25:25Z suehring
58	! Bugfixes:
59	! - reallocation of new particles
60	! ( did not work for small number of min_nr_particle )
61	! - dynamical reallocation of north-south exchange arrays ( particles got lost )
62	! - north-south exchange ( nr_move_north, nr_move_south were overwritten by zero )
63	! - horizontal particle boundary conditions in serial mode
64	!
65	! Remove unused variables
66	! Descriptions in variable declaration blocks added
67	!
68	! 1873 2016-04-18 14:50:06Z maronga
69	! Module renamed (removed _mod)
70	!
71	!
72	! 1850 2016-04-08 13:29:27Z maronga
73	! Module renamed
74	!
75	!
76	! 1822 2016-04-07 07:49:42Z hoffmann
77	! Tails removed. Unused variables removed.
78	!
79	! 1783 2016-03-06 18:36:17Z raasch
80	! new netcdf-module included
81	!
82	! 1691 2015-10-26 16:17:44Z maronga
83	! Formatting corrections.
84	!
85	! 1685 2015-10-08 07:32:13Z raasch
86	! bugfix concerning vertical index offset in case of ocean
87	!
88	! 1682 2015-10-07 23:56:08Z knoop
89	! Code annotations made doxygen readable
90	!
91	! 1359 2014-04-11 17:15:14Z hoffmann
92	! New particle structure integrated.
93	! Kind definition added to all floating point numbers.
94	!
95	! 1327 2014-03-21 11:00:16Z raasch
96	! -netcdf output queries
97	!
98	! 1320 2014-03-20 08:40:49Z raasch
99	! ONLY-attribute added to USE-statements,
100	! kind-parameters added to all INTEGER and REAL declaration statements,
101	! kinds are defined in new module kinds,
102	! comment fields (!:) to be used for variable explanations added to
103	! all variable declaration statements
104	!
105	! 1318 2014-03-17 13:35:16Z raasch
106	! module interfaces removed
107	!
108	! 1036 2012-10-22 13:43:42Z raasch
109	! code put under GPL (PALM 3.9)
110	!
111	! 851 2012-03-15 14:32:58Z raasch
112	! Bugfix: resetting of particle_mask and tail mask moved from end of this
113	! routine to lpm
114	!
115	! 849 2012-03-15 10:35:09Z raasch
116	! initial revision (former part of advec_particles)
117	!
118	!
119	! Description:
120	! ------------
121	! Exchange of particles between the subdomains.
122	!------------------------------------------------------------------------------!
123	MODULE lpm_exchange_horiz_mod
124
125	USE, INTRINSIC :: ISO_C_BINDING
126
127	USE control_parameters, &
128	ONLY: dz, message_string, simulated_time
129
130	USE cpulog, &
131	ONLY: cpu_log, log_point_s
132
133	USE grid_variables, &
134	ONLY: ddx, ddy, dx, dy
135
136	USE indices, &
137	ONLY: nx, nxl, nxr, ny, nyn, nys, nzb, nzt
138
139	USE kinds
140
141	USE lpm_pack_and_sort_mod, &
142	ONLY: lpm_pack
143
144	USE netcdf_interface, &
145	ONLY: netcdf_data_format
146
147	USE particle_attributes, &
148	ONLY: alloc_factor, deleted_particles, grid_particles, &
149	ibc_par_lr, ibc_par_ns, min_nr_particle, &
150	number_of_particles, &
151	offset_ocean_nzt, offset_ocean_nzt_m1, particles, &
152	particle_type, prt_count, trlp_count_sum, &
153	trlp_count_recv_sum, trnp_count_sum, trnp_count_recv_sum, &
154	trrp_count_sum, trrp_count_recv_sum, trsp_count_sum, &
155	trsp_count_recv_sum, zero_particle
156
157	USE pegrid
158
159	IMPLICIT NONE
160
161	INTEGER(iwp), PARAMETER :: NR_2_direction_move = 10000 !<
162	INTEGER(iwp) :: nr_move_north !<
163	INTEGER(iwp) :: nr_move_south !<
164
165	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: move_also_north
166	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: move_also_south
167
168	SAVE
169
170	PRIVATE
171	PUBLIC lpm_exchange_horiz, lpm_move_particle, realloc_particles_array, &
172	dealloc_particles_array
173
174	INTERFACE lpm_exchange_horiz
175	MODULE PROCEDURE lpm_exchange_horiz
176	END INTERFACE lpm_exchange_horiz
177
178	INTERFACE lpm_move_particle
179	MODULE PROCEDURE lpm_move_particle
180	END INTERFACE lpm_move_particle
181
182	INTERFACE realloc_particles_array
183	MODULE PROCEDURE realloc_particles_array
184	END INTERFACE realloc_particles_array
185
186	INTERFACE dealloc_particles_array
187	MODULE PROCEDURE dealloc_particles_array
188	END INTERFACE dealloc_particles_array
189	CONTAINS
190
191	!------------------------------------------------------------------------------!
192	! Description:
193	! ------------
194	!> Exchange between subdomains.
195	!> As soon as one particle has moved beyond the boundary of the domain, it
196	!> is included in the relevant transfer arrays and marked for subsequent
197	!> deletion on this PE.
198	!> First sweep for crossings in x direction. Find out first the number of
199	!> particles to be transferred and allocate temporary arrays needed to store
200	!> them.
201	!> For a one-dimensional decomposition along y, no transfer is necessary,
202	!> because the particle remains on the PE, but the particle coordinate has to
203	!> be adjusted.
204	!------------------------------------------------------------------------------!
205	SUBROUTINE lpm_exchange_horiz
206
207	IMPLICIT NONE
208
209	INTEGER(iwp) :: i !< grid index (x) of particle positition
210	INTEGER(iwp) :: ip !< index variable along x
211	INTEGER(iwp) :: j !< grid index (y) of particle positition
212	INTEGER(iwp) :: jp !< index variable along y
213	INTEGER(iwp) :: kp !< index variable along z
214	INTEGER(iwp) :: n !< particle index variable
215	INTEGER(iwp) :: par_size !< Particle size in bytes
216	INTEGER(iwp) :: trlp_count !< number of particles send to left PE
217	INTEGER(iwp) :: trlp_count_recv !< number of particles receive from right PE
218	INTEGER(iwp) :: trnp_count !< number of particles send to north PE
219	INTEGER(iwp) :: trnp_count_recv !< number of particles receive from south PE
220	INTEGER(iwp) :: trrp_count !< number of particles send to right PE
221	INTEGER(iwp) :: trrp_count_recv !< number of particles receive from left PE
222	INTEGER(iwp) :: trsp_count !< number of particles send to south PE
223	INTEGER(iwp) :: trsp_count_recv !< number of particles receive from north PE
224
225	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: rvlp !< particles received from right PE
226	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: rvnp !< particles received from south PE
227	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: rvrp !< particles received from left PE
228	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: rvsp !< particles received from north PE
229	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: trlp !< particles send to left PE
230	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: trnp !< particles send to north PE
231	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: trrp !< particles send to right PE
232	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: trsp !< particles send to south PE
233
234	CALL cpu_log( log_point_s(23), 'lpm_exchange_horiz', 'start' )
235
236	#if defined( __parallel )
237
238	!
239	!-- Exchange between subdomains.
240	!-- As soon as one particle has moved beyond the boundary of the domain, it
241	!-- is included in the relevant transfer arrays and marked for subsequent
242	!-- deletion on this PE.
243	!-- First sweep for crossings in x direction. Find out first the number of
244	!-- particles to be transferred and allocate temporary arrays needed to store
245	!-- them.
246	!-- For a one-dimensional decomposition along y, no transfer is necessary,
247	!-- because the particle remains on the PE, but the particle coordinate has to
248	!-- be adjusted.
249	trlp_count = 0
250	trrp_count = 0
251
252	trlp_count_recv = 0
253	trrp_count_recv = 0
254
255	IF ( pdims(1) /= 1 ) THEN
256	!
257	!-- First calculate the storage necessary for sending and receiving the data.
258	!-- Compute only first (nxl) and last (nxr) loop iterration.
259	DO ip = nxl, nxr, nxr - nxl
260	DO jp = nys, nyn
261	DO kp = nzb+1, nzt
262
263	number_of_particles = prt_count(kp,jp,ip)
264	IF ( number_of_particles <= 0 ) CYCLE
265	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
266	DO n = 1, number_of_particles
267	IF ( particles(n)%particle_mask ) THEN
268	i = particles(n)%x * ddx
269	!
270	!-- Above calculation does not work for indices less than zero
271	IF ( particles(n)%x < 0.0_wp) i = -1
272
273	IF ( i < nxl ) THEN
274	trlp_count = trlp_count + 1
275	ELSEIF ( i > nxr ) THEN
276	trrp_count = trrp_count + 1
277	ENDIF
278	ENDIF
279	ENDDO
280
281	ENDDO
282	ENDDO
283	ENDDO
284
285	IF ( trlp_count == 0 ) trlp_count = 1
286	IF ( trrp_count == 0 ) trrp_count = 1
287
288	ALLOCATE( trlp(trlp_count), trrp(trrp_count) )
289
290	trlp = zero_particle
291	trrp = zero_particle
292
293	trlp_count = 0
294	trrp_count = 0
295
296	ENDIF
297	!
298	!-- Compute only first (nxl) and last (nxr) loop iterration
299	DO ip = nxl, nxr, nxr-nxl
300	DO jp = nys, nyn
301	DO kp = nzb+1, nzt
302	number_of_particles = prt_count(kp,jp,ip)
303	IF ( number_of_particles <= 0 ) CYCLE
304	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
305	DO n = 1, number_of_particles
306	!
307	!-- Only those particles that have not been marked as 'deleted' may
308	!-- be moved.
309	IF ( particles(n)%particle_mask ) THEN
310
311	i = particles(n)%x * ddx
312	!
313	!-- Above calculation does not work for indices less than zero
314	IF ( particles(n)%x < 0.0_wp ) i = -1
315
316	IF ( i < nxl ) THEN
317	IF ( i < 0 ) THEN
318	!
319	!-- Apply boundary condition along x
320	IF ( ibc_par_lr == 0 ) THEN
321	!
322	!-- Cyclic condition
323	IF ( pdims(1) == 1 ) THEN
324	particles(n)%x = ( nx + 1 ) * dx + particles(n)%x
325	particles(n)%origin_x = ( nx + 1 ) * dx + &
326	particles(n)%origin_x
327	ELSE
328	trlp_count = trlp_count + 1
329	trlp(trlp_count) = particles(n)
330	trlp(trlp_count)%x = ( nx + 1 ) * dx + trlp(trlp_count)%x
331	trlp(trlp_count)%origin_x = trlp(trlp_count)%origin_x + &
332	( nx + 1 ) * dx
333	particles(n)%particle_mask = .FALSE.
334	deleted_particles = deleted_particles + 1
335
336	IF ( trlp(trlp_count)%x >= (nx + 1)* dx - 1.0E-12_wp ) THEN
337	trlp(trlp_count)%x = trlp(trlp_count)%x - 1.0E-10_wp
338	!++ why is 1 subtracted in next statement???
339	trlp(trlp_count)%origin_x = trlp(trlp_count)%origin_x - 1
340	ENDIF
341
342	ENDIF
343
344	ELSEIF ( ibc_par_lr == 1 ) THEN
345	!
346	!-- Particle absorption
347	particles(n)%particle_mask = .FALSE.
348	deleted_particles = deleted_particles + 1
349
350	ELSEIF ( ibc_par_lr == 2 ) THEN
351	!
352	!-- Particle reflection
353	particles(n)%x = -particles(n)%x
354	particles(n)%speed_x = -particles(n)%speed_x
355
356	ENDIF
357	ELSE
358	!
359	!-- Store particle data in the transfer array, which will be
360	!-- send to the neighbouring PE
361	trlp_count = trlp_count + 1
362	trlp(trlp_count) = particles(n)
363	particles(n)%particle_mask = .FALSE.
364	deleted_particles = deleted_particles + 1
365
366	ENDIF
367
368	ELSEIF ( i > nxr ) THEN
369	IF ( i > nx ) THEN
370	!
371	!-- Apply boundary condition along x
372	IF ( ibc_par_lr == 0 ) THEN
373	!
374	!-- Cyclic condition
375	IF ( pdims(1) == 1 ) THEN
376	particles(n)%x = particles(n)%x - ( nx + 1 ) * dx
377	particles(n)%origin_x = particles(n)%origin_x - &
378	( nx + 1 ) * dx
379	ELSE
380	trrp_count = trrp_count + 1
381	trrp(trrp_count) = particles(n)
382	trrp(trrp_count)%x = trrp(trrp_count)%x - ( nx + 1 ) * dx
383	trrp(trrp_count)%origin_x = trrp(trrp_count)%origin_x - &
384	( nx + 1 ) * dx
385	particles(n)%particle_mask = .FALSE.
386	deleted_particles = deleted_particles + 1
387
388	ENDIF
389
390	ELSEIF ( ibc_par_lr == 1 ) THEN
391	!
392	!-- Particle absorption
393	particles(n)%particle_mask = .FALSE.
394	deleted_particles = deleted_particles + 1
395
396	ELSEIF ( ibc_par_lr == 2 ) THEN
397	!
398	!-- Particle reflection
399	particles(n)%x = 2 * ( nx * dx ) - particles(n)%x
400	particles(n)%speed_x = -particles(n)%speed_x
401
402	ENDIF
403	ELSE
404	!
405	!-- Store particle data in the transfer array, which will be send
406	!-- to the neighbouring PE
407	trrp_count = trrp_count + 1
408	trrp(trrp_count) = particles(n)
409	particles(n)%particle_mask = .FALSE.
410	deleted_particles = deleted_particles + 1
411
412	ENDIF
413
414	ENDIF
415	ENDIF
416
417	ENDDO
418	ENDDO
419	ENDDO
420	ENDDO
421
422	#if defined( __gfortran )
423	!
424	!-- For the gfortran compiler the function c_sizeof produces strange erros
425	!-- which can probably be attributed to an error in the gfortran compiler.
426	!-- Therefore the particle size in bytes is set manually. Attention: A
427	!-- change of the size of the particle type requires an adjustment of
428	!-- this value
429	par_size = 184
430	#else
431	!
432	!-- This MPI_SENDRECV should work even with odd mixture on 32 and 64 Bit
433	!-- variables in structure particle_type (due to the calculation of par_size)
434	par_size = c_sizeof(trlp(1))
435	#endif
436
437
438	!
439	!-- Allocate arrays required for north-south exchange, as these
440	!-- are used directly after particles are exchange along x-direction.
441	ALLOCATE( move_also_north(1:NR_2_direction_move) )
442	ALLOCATE( move_also_south(1:NR_2_direction_move) )
443
444	nr_move_north = 0
445	nr_move_south = 0
446	!
447	!-- Send left boundary, receive right boundary (but first exchange how many
448	!-- and check, if particle storage must be extended)
449	IF ( pdims(1) /= 1 ) THEN
450
451	CALL MPI_SENDRECV( trlp_count, 1, MPI_INTEGER, pleft, 0, &
452	trrp_count_recv, 1, MPI_INTEGER, pright, 0, &
453	comm2d, status, ierr )
454
455	ALLOCATE(rvrp(MAX(1,trrp_count_recv)))
456
457	CALL MPI_SENDRECV( trlp, max(1,trlp_count)*par_size, MPI_BYTE,&
458	pleft, 1, rvrp, &
459	max(1,trrp_count_recv)*par_size, MPI_BYTE, pright, 1,&
460	comm2d, status, ierr )
461
462	IF ( trrp_count_recv > 0 ) CALL Add_particles_to_gridcell(rvrp(1:trrp_count_recv))
463
464	DEALLOCATE(rvrp)
465
466	!
467	!-- Send right boundary, receive left boundary
468	CALL MPI_SENDRECV( trrp_count, 1, MPI_INTEGER, pright, 0, &
469	trlp_count_recv, 1, MPI_INTEGER, pleft, 0, &
470	comm2d, status, ierr )
471
472	ALLOCATE(rvlp(MAX(1,trlp_count_recv)))
473	!
474	!-- This MPI_SENDRECV should work even with odd mixture on 32 and 64 Bit
475	!-- variables in structure particle_type (due to the calculation of par_size)
476	CALL MPI_SENDRECV( trrp, max(1,trrp_count)*par_size, MPI_BYTE,&
477	pright, 1, rvlp, &
478	max(1,trlp_count_recv)*par_size, MPI_BYTE, pleft, 1, &
479	comm2d, status, ierr )
480
481	IF ( trlp_count_recv > 0 ) CALL Add_particles_to_gridcell(rvlp(1:trlp_count_recv))
482
483	DEALLOCATE( rvlp )
484	DEALLOCATE( trlp, trrp )
485
486	ENDIF
487
488	!
489	!-- Check whether particles have crossed the boundaries in y direction. Note
490	!-- that this case can also apply to particles that have just been received
491	!-- from the adjacent right or left PE.
492	!-- Find out first the number of particles to be transferred and allocate
493	!-- temporary arrays needed to store them.
494	!-- For a one-dimensional decomposition along y, no transfer is necessary,
495	!-- because the particle remains on the PE.
496	trsp_count = nr_move_south
497	trnp_count = nr_move_north
498
499	trsp_count_recv = 0
500	trnp_count_recv = 0
501
502	IF ( pdims(2) /= 1 ) THEN
503	!
504	!-- First calculate the storage necessary for sending and receiving the
505	!-- data
506	DO ip = nxl, nxr
507	DO jp = nys, nyn, nyn-nys !compute only first (nys) and last (nyn) loop iterration
508	DO kp = nzb+1, nzt
509	number_of_particles = prt_count(kp,jp,ip)
510	IF ( number_of_particles <= 0 ) CYCLE
511	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
512	DO n = 1, number_of_particles
513	IF ( particles(n)%particle_mask ) THEN
514	j = particles(n)%y * ddy
515	!
516	!-- Above calculation does not work for indices less than zero
517	IF ( particles(n)%y < 0.0_wp) j = -1
518
519	IF ( j < nys ) THEN
520	trsp_count = trsp_count + 1
521	ELSEIF ( j > nyn ) THEN
522	trnp_count = trnp_count + 1
523	ENDIF
524	ENDIF
525	ENDDO
526	ENDDO
527	ENDDO
528	ENDDO
529
530	IF ( trsp_count == 0 ) trsp_count = 1
531	IF ( trnp_count == 0 ) trnp_count = 1
532
533	ALLOCATE( trsp(trsp_count), trnp(trnp_count) )
534
535	trsp = zero_particle
536	trnp = zero_particle
537
538	trsp_count = nr_move_south
539	trnp_count = nr_move_north
540
541	trsp(1:nr_move_south) = move_also_south(1:nr_move_south)
542	trnp(1:nr_move_north) = move_also_north(1:nr_move_north)
543
544	ENDIF
545
546	DO ip = nxl, nxr
547	DO jp = nys, nyn, nyn-nys ! compute only first (nys) and last (nyn) loop iterration
548	DO kp = nzb+1, nzt
549	number_of_particles = prt_count(kp,jp,ip)
550	IF ( number_of_particles <= 0 ) CYCLE
551	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
552	DO n = 1, number_of_particles
553	!
554	!-- Only those particles that have not been marked as 'deleted' may
555	!-- be moved.
556	IF ( particles(n)%particle_mask ) THEN
557
558	j = particles(n)%y * ddy
559	!
560	!-- Above calculation does not work for indices less than zero
561	IF ( particles(n)%y < 0.0_wp ) j = -1
562
563	IF ( j < nys ) THEN
564	IF ( j < 0 ) THEN
565	!
566	!-- Apply boundary condition along y
567	IF ( ibc_par_ns == 0 ) THEN
568	!
569	!-- Cyclic condition
570	IF ( pdims(2) == 1 ) THEN
571	particles(n)%y = ( ny + 1 ) * dy + particles(n)%y
572	particles(n)%origin_y = ( ny + 1 ) * dy + &
573	particles(n)%origin_y
574	ELSE
575	trsp_count = trsp_count + 1
576	trsp(trsp_count) = particles(n)
577	trsp(trsp_count)%y = ( ny + 1 ) * dy + &
578	trsp(trsp_count)%y
579	trsp(trsp_count)%origin_y = trsp(trsp_count)%origin_y &
580	+ ( ny + 1 ) * dy
581	particles(n)%particle_mask = .FALSE.
582	deleted_particles = deleted_particles + 1
583
584	IF ( trsp(trsp_count)%y >= (ny+1)* dy - 1.0E-12_wp ) THEN
585	trsp(trsp_count)%y = trsp(trsp_count)%y - 1.0E-10_wp
586	!++ why is 1 subtracted in next statement???
587	trsp(trsp_count)%origin_y = &
588	trsp(trsp_count)%origin_y - 1
589	ENDIF
590
591	ENDIF
592
593	ELSEIF ( ibc_par_ns == 1 ) THEN
594	!
595	!-- Particle absorption
596	particles(n)%particle_mask = .FALSE.
597	deleted_particles = deleted_particles + 1
598
599	ELSEIF ( ibc_par_ns == 2 ) THEN
600	!
601	!-- Particle reflection
602	particles(n)%y = -particles(n)%y
603	particles(n)%speed_y = -particles(n)%speed_y
604
605	ENDIF
606	ELSE
607	!
608	!-- Store particle data in the transfer array, which will
609	!-- be send to the neighbouring PE
610	trsp_count = trsp_count + 1
611	trsp(trsp_count) = particles(n)
612	particles(n)%particle_mask = .FALSE.
613	deleted_particles = deleted_particles + 1
614
615	ENDIF
616
617	ELSEIF ( j > nyn ) THEN
618	IF ( j > ny ) THEN
619	!
620	!-- Apply boundary condition along y
621	IF ( ibc_par_ns == 0 ) THEN
622	!
623	!-- Cyclic condition
624	IF ( pdims(2) == 1 ) THEN
625	particles(n)%y = particles(n)%y - ( ny + 1 ) * dy
626	particles(n)%origin_y = &
627	particles(n)%origin_y - ( ny + 1 ) * dy
628	ELSE
629	trnp_count = trnp_count + 1
630	trnp(trnp_count) = particles(n)
631	trnp(trnp_count)%y = &
632	trnp(trnp_count)%y - ( ny + 1 ) * dy
633	trnp(trnp_count)%origin_y = &
634	trnp(trnp_count)%origin_y - ( ny + 1 ) * dy
635	particles(n)%particle_mask = .FALSE.
636	deleted_particles = deleted_particles + 1
637	ENDIF
638
639	ELSEIF ( ibc_par_ns == 1 ) THEN
640	!
641	!-- Particle absorption
642	particles(n)%particle_mask = .FALSE.
643	deleted_particles = deleted_particles + 1
644
645	ELSEIF ( ibc_par_ns == 2 ) THEN
646	!
647	!-- Particle reflection
648	particles(n)%y = 2 * ( ny * dy ) - particles(n)%y
649	particles(n)%speed_y = -particles(n)%speed_y
650
651	ENDIF
652	ELSE
653	!
654	!-- Store particle data in the transfer array, which will
655	!-- be send to the neighbouring PE
656	trnp_count = trnp_count + 1
657	trnp(trnp_count) = particles(n)
658	particles(n)%particle_mask = .FALSE.
659	deleted_particles = deleted_particles + 1
660
661	ENDIF
662
663	ENDIF
664	ENDIF
665	ENDDO
666	ENDDO
667	ENDDO
668	ENDDO
669
670	!
671	!-- Send front boundary, receive back boundary (but first exchange how many
672	!-- and check, if particle storage must be extended)
673	IF ( pdims(2) /= 1 ) THEN
674
675	CALL MPI_SENDRECV( trsp_count, 1, MPI_INTEGER, psouth, 0, &
676	trnp_count_recv, 1, MPI_INTEGER, pnorth, 0, &
677	comm2d, status, ierr )
678
679	ALLOCATE(rvnp(MAX(1,trnp_count_recv)))
680	!
681	!-- This MPI_SENDRECV should work even with odd mixture on 32 and 64 Bit
682	!-- variables in structure particle_type (due to the calculation of par_size)
683	CALL MPI_SENDRECV( trsp, trsp_count*par_size, MPI_BYTE, &
684	psouth, 1, rvnp, &
685	trnp_count_recv*par_size, MPI_BYTE, pnorth, 1, &
686	comm2d, status, ierr )
687
688	IF ( trnp_count_recv > 0 ) CALL Add_particles_to_gridcell(rvnp(1:trnp_count_recv))
689
690	DEALLOCATE(rvnp)
691
692	!
693	!-- Send back boundary, receive front boundary
694	CALL MPI_SENDRECV( trnp_count, 1, MPI_INTEGER, pnorth, 0, &
695	trsp_count_recv, 1, MPI_INTEGER, psouth, 0, &
696	comm2d, status, ierr )
697
698	ALLOCATE(rvsp(MAX(1,trsp_count_recv)))
699	!
700	!-- This MPI_SENDRECV should work even with odd mixture on 32 and 64 Bit
701	!-- variables in structure particle_type (due to the calculation of par_size)
702	CALL MPI_SENDRECV( trnp, trnp_count*par_size, MPI_BYTE, &
703	pnorth, 1, rvsp, &
704	trsp_count_recv*par_size, MPI_BYTE, psouth, 1, &
705	comm2d, status, ierr )
706
707	IF ( trsp_count_recv > 0 ) CALL Add_particles_to_gridcell(rvsp(1:trsp_count_recv))
708
709	DEALLOCATE(rvsp)
710
711	number_of_particles = number_of_particles + trsp_count_recv
712
713	DEALLOCATE( trsp, trnp )
714
715	ENDIF
716
717	DEALLOCATE( move_also_north )
718	DEALLOCATE( move_also_south )
719
720	#else
721
722	DO ip = nxl, nxr, nxr-nxl
723	DO jp = nys, nyn
724	DO kp = nzb+1, nzt
725	number_of_particles = prt_count(kp,jp,ip)
726	IF ( number_of_particles <= 0 ) CYCLE
727	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
728	DO n = 1, number_of_particles
729	!
730	!-- Apply boundary conditions
731
732	IF ( particles(n)%x < 0.0_wp ) THEN
733
734	IF ( ibc_par_lr == 0 ) THEN
735	!
736	!-- Cyclic boundary. Relevant coordinate has to be changed.
737	particles(n)%x = ( nx + 1 ) * dx + particles(n)%x
738	particles(n)%origin_x = ( nx + 1 ) * dx + &
739	particles(n)%origin_x
740	ELSEIF ( ibc_par_lr == 1 ) THEN
741	!
742	!-- Particle absorption
743	particles(n)%particle_mask = .FALSE.
744	deleted_particles = deleted_particles + 1
745
746	ELSEIF ( ibc_par_lr == 2 ) THEN
747	!
748	!-- Particle reflection
749	particles(n)%x = -dx - particles(n)%x
750	particles(n)%speed_x = -particles(n)%speed_x
751	ENDIF
752
753	ELSEIF ( particles(n)%x >= ( nx + 1) * dx ) THEN
754
755	IF ( ibc_par_lr == 0 ) THEN
756	!
757	!-- Cyclic boundary. Relevant coordinate has to be changed.
758	particles(n)%x = particles(n)%x - ( nx + 1 ) * dx
759	particles(n)%origin_x = particles(n)%origin_x - &
760	( nx + 1 ) * dx
761
762	ELSEIF ( ibc_par_lr == 1 ) THEN
763	!
764	!-- Particle absorption
765	particles(n)%particle_mask = .FALSE.
766	deleted_particles = deleted_particles + 1
767
768	ELSEIF ( ibc_par_lr == 2 ) THEN
769	!
770	!-- Particle reflection
771	particles(n)%x = ( nx + 1 ) * dx - particles(n)%x
772	particles(n)%speed_x = -particles(n)%speed_x
773	ENDIF
774
775	ENDIF
776	ENDDO
777	ENDDO
778	ENDDO
779	ENDDO
780
781	DO ip = nxl, nxr
782	DO jp = nys, nyn, nyn-nys
783	DO kp = nzb+1, nzt
784	number_of_particles = prt_count(kp,jp,ip)
785	IF ( number_of_particles <= 0 ) CYCLE
786	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
787	DO n = 1, number_of_particles
788
789	IF ( particles(n)%y < 0.0_wp) THEN
790
791	IF ( ibc_par_ns == 0 ) THEN
792	!
793	!-- Cyclic boundary. Relevant coordinate has to be changed.
794	particles(n)%y = ( ny + 1 ) * dy + particles(n)%y
795	particles(n)%origin_y = ( ny + 1 ) * dy + &
796	particles(n)%origin_y
797
798	ELSEIF ( ibc_par_ns == 1 ) THEN
799	!
800	!-- Particle absorption
801	particles(n)%particle_mask = .FALSE.
802	deleted_particles = deleted_particles + 1
803
804	ELSEIF ( ibc_par_ns == 2 ) THEN
805	!
806	!-- Particle reflection
807	particles(n)%y = -dy - particles(n)%y
808	particles(n)%speed_y = -particles(n)%speed_y
809	ENDIF
810
811	ELSEIF ( particles(n)%y >= ( ny + 1) * dy ) THEN
812
813	IF ( ibc_par_ns == 0 ) THEN
814	!
815	!-- Cyclic boundary. Relevant coordinate has to be changed.
816	particles(n)%y = particles(n)%y - ( ny + 1 ) * dy
817	particles(n)%origin_y = particles(n)%origin_y - &
818	( ny + 1 ) * dy
819
820	ELSEIF ( ibc_par_ns == 1 ) THEN
821	!
822	!-- Particle absorption
823	particles(n)%particle_mask = .FALSE.
824	deleted_particles = deleted_particles + 1
825
826	ELSEIF ( ibc_par_ns == 2 ) THEN
827	!
828	!-- Particle reflection
829	particles(n)%y = ( ny + 1 ) * dy - particles(n)%y
830	particles(n)%speed_y = -particles(n)%speed_y
831	ENDIF
832
833	ENDIF
834
835	ENDDO
836	ENDDO
837	ENDDO
838	ENDDO
839	#endif
840
841	!
842	!-- Accumulate the number of particles transferred between the subdomains
843	#if defined( __parallel )
844	trlp_count_sum = trlp_count_sum + trlp_count
845	trlp_count_recv_sum = trlp_count_recv_sum + trlp_count_recv
846	trrp_count_sum = trrp_count_sum + trrp_count
847	trrp_count_recv_sum = trrp_count_recv_sum + trrp_count_recv
848	trsp_count_sum = trsp_count_sum + trsp_count
849	trsp_count_recv_sum = trsp_count_recv_sum + trsp_count_recv
850	trnp_count_sum = trnp_count_sum + trnp_count
851	trnp_count_recv_sum = trnp_count_recv_sum + trnp_count_recv
852	#endif
853
854	CALL cpu_log( log_point_s(23), 'lpm_exchange_horiz', 'stop' )
855
856	END SUBROUTINE lpm_exchange_horiz
857
858	!------------------------------------------------------------------------------!
859	! Description:
860	! ------------
861	!> If a particle moves from one processor to another, this subroutine moves
862	!> the corresponding elements from the particle arrays of the old grid cells
863	!> to the particle arrays of the new grid cells.
864	!------------------------------------------------------------------------------!
865	SUBROUTINE Add_particles_to_gridcell (particle_array)
866
867	IMPLICIT NONE
868
869	INTEGER(iwp) :: ip !< grid index (x) of particle
870	INTEGER(iwp) :: jp !< grid index (x) of particle
871	INTEGER(iwp) :: kp !< grid index (x) of particle
872	INTEGER(iwp) :: n !< index variable of particle
873	INTEGER(iwp) :: pindex !< dummy argument for new number of particles per grid box
874
875	LOGICAL :: pack_done !<
876
877	TYPE(particle_type), DIMENSION(:), INTENT(IN) :: particle_array !< new particles in a grid box
878	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: temp_ns !< temporary particle array for reallocation
879
880	pack_done = .FALSE.
881
882	DO n = 1, SIZE(particle_array)
883
884	IF ( .NOT. particle_array(n)%particle_mask ) CYCLE
885
886	ip = particle_array(n)%x * ddx
887	jp = particle_array(n)%y * ddy
888	kp = particle_array(n)%z / dz + 1 + offset_ocean_nzt
889
890	IF ( ip >= nxl .AND. ip <= nxr .AND. jp >= nys .AND. jp <= nyn &
891	.AND. kp >= nzb+1 .AND. kp <= nzt) THEN ! particle stays on processor
892	number_of_particles = prt_count(kp,jp,ip)
893	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
894
895	pindex = prt_count(kp,jp,ip)+1
896	IF( pindex > SIZE(grid_particles(kp,jp,ip)%particles) ) THEN
897	IF ( pack_done ) THEN
898	CALL realloc_particles_array (ip,jp,kp)
899	ELSE
900	CALL lpm_pack
901	prt_count(kp,jp,ip) = number_of_particles
902	pindex = prt_count(kp,jp,ip)+1
903	IF ( pindex > SIZE(grid_particles(kp,jp,ip)%particles) ) THEN
904	CALL realloc_particles_array (ip,jp,kp)
905	ENDIF
906	pack_done = .TRUE.
907	ENDIF
908	ENDIF
909	grid_particles(kp,jp,ip)%particles(pindex) = particle_array(n)
910	prt_count(kp,jp,ip) = pindex
911	ELSE
912	IF ( jp <= nys - 1 ) THEN
913	nr_move_south = nr_move_south+1
914	!
915	!-- Before particle information is swapped to exchange-array, check
916	!-- if enough memory is allocated. If required, reallocate exchange
917	!-- array.
918	IF ( nr_move_south > SIZE(move_also_south) ) THEN
919	!
920	!-- At first, allocate further temporary array to swap particle
921	!-- information.
922	ALLOCATE( temp_ns(SIZE(move_also_south)+NR_2_direction_move) )
923	temp_ns(1:nr_move_south-1) = move_also_south(1:nr_move_south-1)
924	DEALLOCATE( move_also_south )
925	ALLOCATE( move_also_south(SIZE(temp_ns)) )
926	move_also_south(1:nr_move_south-1) = temp_ns(1:nr_move_south-1)
927	DEALLOCATE( temp_ns )
928
929	ENDIF
930
931	move_also_south(nr_move_south) = particle_array(n)
932
933	IF ( jp == -1 ) THEN
934	!
935	!-- Apply boundary condition along y
936	IF ( ibc_par_ns == 0 ) THEN
937	move_also_south(nr_move_south)%y = &
938	move_also_south(nr_move_south)%y + ( ny + 1 ) * dy
939	move_also_south(nr_move_south)%origin_y = &
940	move_also_south(nr_move_south)%origin_y + ( ny + 1 ) * dy
941	ELSEIF ( ibc_par_ns == 1 ) THEN
942	!
943	!-- Particle absorption
944	move_also_south(nr_move_south)%particle_mask = .FALSE.
945	deleted_particles = deleted_particles + 1
946
947	ELSEIF ( ibc_par_ns == 2 ) THEN
948	!
949	!-- Particle reflection
950	move_also_south(nr_move_south)%y = &
951	-move_also_south(nr_move_south)%y
952	move_also_south(nr_move_south)%speed_y = &
953	-move_also_south(nr_move_south)%speed_y
954
955	ENDIF
956	ENDIF
957	ELSEIF ( jp >= nyn+1 ) THEN
958	nr_move_north = nr_move_north+1
959	!
960	!-- Before particle information is swapped to exchange-array, check
961	!-- if enough memory is allocated. If required, reallocate exchange
962	!-- array.
963	IF ( nr_move_north > SIZE(move_also_north) ) THEN
964	!
965	!-- At first, allocate further temporary array to swap particle
966	!-- information.
967	ALLOCATE( temp_ns(SIZE(move_also_north)+NR_2_direction_move) )
968	temp_ns(1:nr_move_north-1) = move_also_south(1:nr_move_north-1)
969	DEALLOCATE( move_also_north )
970	ALLOCATE( move_also_north(SIZE(temp_ns)) )
971	move_also_north(1:nr_move_north-1) = temp_ns(1:nr_move_north-1)
972	DEALLOCATE( temp_ns )
973
974	ENDIF
975
976	move_also_north(nr_move_north) = particle_array(n)
977	IF ( jp == ny+1 ) THEN
978	!
979	!-- Apply boundary condition along y
980	IF ( ibc_par_ns == 0 ) THEN
981
982	move_also_north(nr_move_north)%y = &
983	move_also_north(nr_move_north)%y - ( ny + 1 ) * dy
984	move_also_north(nr_move_north)%origin_y = &
985	move_also_north(nr_move_north)%origin_y - ( ny + 1 ) * dy
986	ELSEIF ( ibc_par_ns == 1 ) THEN
987	!
988	!-- Particle absorption
989	move_also_north(nr_move_north)%particle_mask = .FALSE.
990	deleted_particles = deleted_particles + 1
991
992	ELSEIF ( ibc_par_ns == 2 ) THEN
993	!
994	!-- Particle reflection
995	move_also_north(nr_move_north)%y = &
996	-move_also_north(nr_move_north)%y
997	move_also_north(nr_move_north)%speed_y = &
998	-move_also_north(nr_move_north)%speed_y
999
1000	ENDIF
1001	ENDIF
1002	ELSE
1003	WRITE(0,'(a,8i7)') 'particle out of range ',myid,ip,jp,kp,nxl,nxr,nys,nyn
1004	ENDIF
1005	ENDIF
1006	ENDDO
1007
1008	RETURN
1009
1010	END SUBROUTINE Add_particles_to_gridcell
1011
1012
1013
1014
1015	!------------------------------------------------------------------------------!
1016	! Description:
1017	! ------------
1018	!> If a particle moves from one grid cell to another (on the current
1019	!> processor!), this subroutine moves the corresponding element from the
1020	!> particle array of the old grid cell to the particle array of the new grid
1021	!> cell.
1022	!------------------------------------------------------------------------------!
1023	SUBROUTINE lpm_move_particle
1024
1025	IMPLICIT NONE
1026
1027	INTEGER(iwp) :: i !< grid index (x) of particle position
1028	INTEGER(iwp) :: ip !< index variable along x
1029	INTEGER(iwp) :: j !< grid index (y) of particle position
1030	INTEGER(iwp) :: jp !< index variable along y
1031	INTEGER(iwp) :: k !< grid index (z) of particle position
1032	INTEGER(iwp) :: kp !< index variable along z
1033	INTEGER(iwp) :: n !< index variable for particle array
1034	INTEGER(iwp) :: np_before_move !< number of particles per grid box before moving
1035	INTEGER(iwp) :: pindex !< dummy argument for number of new particle per grid box
1036
1037	TYPE(particle_type), DIMENSION(:), POINTER :: particles_before_move !< particles before moving
1038
1039	CALL cpu_log( log_point_s(41), 'lpm_move_particle', 'start' )
1040
1041	DO ip = nxl, nxr
1042	DO jp = nys, nyn
1043	DO kp = nzb+1, nzt
1044
1045	np_before_move = prt_count(kp,jp,ip)
1046	IF ( np_before_move <= 0 ) CYCLE
1047	particles_before_move => grid_particles(kp,jp,ip)%particles(1:np_before_move)
1048
1049	DO n = 1, np_before_move
1050	i = particles_before_move(n)%x * ddx
1051	j = particles_before_move(n)%y * ddy
1052	k = particles_before_move(n)%z / dz + 1 + offset_ocean_nzt
1053
1054	!-- For lpm_exchange_horiz to work properly particles need to be moved to the outermost gridboxes
1055	!-- of the respective processor. If the particle index is inside the processor the following lines
1056	!-- will not change the index
1057	i = MIN ( i , nxr )
1058	i = MAX ( i , nxl )
1059	j = MIN ( j , nyn )
1060	j = MAX ( j , nys )
1061	k = MIN ( k , nzt )
1062	k = MAX ( k , nzb+1 )
1063	!
1064	!-- Check, if particle has moved to another grid cell.
1065	IF ( i /= ip .OR. j /= jp .OR. k /= kp ) THEN
1066	!!
1067	!-- If the particle stays on the same processor, the particle
1068	!-- will be added to the particle array of the new processor.
1069	number_of_particles = prt_count(k,j,i)
1070	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
1071
1072	pindex = prt_count(k,j,i)+1
1073	IF ( pindex > SIZE(grid_particles(k,j,i)%particles) ) &
1074	THEN
1075	CALL realloc_particles_array(i,j,k)
1076	ENDIF
1077
1078	grid_particles(k,j,i)%particles(pindex) = particles_before_move(n)
1079	prt_count(k,j,i) = pindex
1080
1081	particles_before_move(n)%particle_mask = .FALSE.
1082	ENDIF
1083	ENDDO
1084
1085	ENDDO
1086	ENDDO
1087	ENDDO
1088
1089	CALL cpu_log( log_point_s(41), 'lpm_move_particle', 'stop' )
1090
1091	RETURN
1092
1093	END SUBROUTINE lpm_move_particle
1094
1095	!------------------------------------------------------------------------------!
1096	! Description:
1097	! ------------
1098	!> If the allocated memory for the particle array do not suffice to add arriving
1099	!> particles from neighbour grid cells, this subrouting reallocates the
1100	!> particle array to assure enough memory is available.
1101	!------------------------------------------------------------------------------!
1102	SUBROUTINE realloc_particles_array (i,j,k,size_in)
1103
1104	IMPLICIT NONE
1105
1106	INTEGER(iwp), INTENT(in) :: i !<
1107	INTEGER(iwp), INTENT(in) :: j !<
1108	INTEGER(iwp), INTENT(in) :: k !<
1109	INTEGER(iwp), INTENT(in), OPTIONAL :: size_in !<
1110
1111	INTEGER(iwp) :: old_size !<
1112	INTEGER(iwp) :: new_size !<
1113	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
1114	TYPE(particle_type), DIMENSION(500) :: tmp_particles_s !<
1115
1116	old_size = SIZE(grid_particles(k,j,i)%particles)
1117
1118	IF ( PRESENT(size_in) ) THEN
1119	new_size = size_in
1120	ELSE
1121	new_size = old_size * ( 1.0_wp + alloc_factor / 100.0_wp )
1122	ENDIF
1123
1124	new_size = MAX( new_size, min_nr_particle, old_size + 1 )
1125
1126	IF ( old_size <= 500 ) THEN
1127
1128	tmp_particles_s(1:old_size) = grid_particles(k,j,i)%particles(1:old_size)
1129
1130	DEALLOCATE(grid_particles(k,j,i)%particles)
1131	ALLOCATE(grid_particles(k,j,i)%particles(new_size))
1132
1133	grid_particles(k,j,i)%particles(1:old_size) = tmp_particles_s(1:old_size)
1134	grid_particles(k,j,i)%particles(old_size+1:new_size) = zero_particle
1135
1136	ELSE
1137
1138	ALLOCATE(tmp_particles_d(new_size))
1139	tmp_particles_d(1:old_size) = grid_particles(k,j,i)%particles
1140
1141	DEALLOCATE(grid_particles(k,j,i)%particles)
1142	ALLOCATE(grid_particles(k,j,i)%particles(new_size))
1143
1144	grid_particles(k,j,i)%particles(1:old_size) = tmp_particles_d(1:old_size)
1145	grid_particles(k,j,i)%particles(old_size+1:new_size) = zero_particle
1146
1147	DEALLOCATE(tmp_particles_d)
1148
1149	ENDIF
1150	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
1151
1152	RETURN
1153	END SUBROUTINE realloc_particles_array
1154
1155
1156
1157
1158
1159	SUBROUTINE dealloc_particles_array
1160
1161	IMPLICIT NONE
1162
1163	INTEGER(iwp) :: i
1164	INTEGER(iwp) :: j
1165	INTEGER(iwp) :: k
1166	INTEGER(iwp) :: old_size !<
1167	INTEGER(iwp) :: new_size !<
1168
1169	LOGICAL :: dealloc
1170
1171	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
1172	TYPE(particle_type), DIMENSION(500) :: tmp_particles_s !<
1173
1174	DO i = nxl, nxr
1175	DO j = nys, nyn
1176	DO k = nzb+1, nzt
1177	!
1178	!-- Determine number of active particles
1179	number_of_particles = prt_count(k,j,i)
1180	!
1181	!-- Determine allocated memory size
1182	old_size = SIZE( grid_particles(k,j,i)%particles )
1183	!
1184	!-- Check for large unused memory
1185	dealloc = ( ( number_of_particles < min_nr_particle .AND. &
1186	old_size > min_nr_particle ) .OR. &
1187	( number_of_particles > min_nr_particle .AND. &
1188	old_size - number_of_particles * &
1189	( 1.0_wp + 0.01_wp * alloc_factor ) > 0.0_wp ) )
1190
1191
1192	IF ( dealloc ) THEN
1193	IF ( number_of_particles < min_nr_particle ) THEN
1194	new_size = min_nr_particle
1195	ELSE
1196	new_size = INT( number_of_particles * ( 1.0_wp + 0.01_wp * alloc_factor ) )
1197	ENDIF
1198
1199	IF ( number_of_particles <= 500 ) THEN
1200
1201	tmp_particles_s(1:number_of_particles) = grid_particles(k,j,i)%particles(1:number_of_particles)
1202
1203	DEALLOCATE(grid_particles(k,j,i)%particles)
1204	ALLOCATE(grid_particles(k,j,i)%particles(new_size))
1205
1206	grid_particles(k,j,i)%particles(1:number_of_particles) = tmp_particles_s(1:number_of_particles)
1207	grid_particles(k,j,i)%particles(number_of_particles+1:new_size) = zero_particle
1208
1209	ELSE
1210
1211	ALLOCATE(tmp_particles_d(number_of_particles))
1212	tmp_particles_d(1:number_of_particles) = grid_particles(k,j,i)%particles(1:number_of_particles)
1213
1214	DEALLOCATE(grid_particles(k,j,i)%particles)
1215	ALLOCATE(grid_particles(k,j,i)%particles(new_size))
1216
1217	grid_particles(k,j,i)%particles(1:number_of_particles) = tmp_particles_d(1:number_of_particles)
1218	grid_particles(k,j,i)%particles(number_of_particles+1:new_size) = zero_particle
1219
1220	DEALLOCATE(tmp_particles_d)
1221
1222	ENDIF
1223
1224	ENDIF
1225	ENDDO
1226	ENDDO
1227	ENDDO
1228
1229	END SUBROUTINE dealloc_particles_array
1230
1231
1232	END MODULE lpm_exchange_horiz_mod

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