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init_particles.f90 @ 149

Last change on this file since 149 was 139, checked in by raasch, 17 years ago

New:
---

Plant canopy model of Watanabe (2004,BLM 112,307-341) added.
It can be switched on by the inipar parameter plant_canopy.
The inipar parameter canopy_mode can be used to prescribe a
plant canopy type. The default case is a homogeneous plant
canopy. Heterogeneous distributions of the leaf area
density and the canopy drag coefficient can be defined in the
new routine user_init_plant_canopy (user_interface).
The inipar parameters lad_surface, lad_vertical_gradient and
lad_vertical_gradient_level can be used in order to
prescribe the vertical profile of leaf area density. The
inipar parameter drag_coefficient determines the canopy
drag coefficient.
Finally, the inipar parameter pch_index determines the
index of the upper boundary of the plant canopy.

Allow new case bc_uv_t = 'dirichlet_0' for channel flow.

For unknown variables (CASE DEFAULT) call new subroutine user_data_output_dvrp

Pressure boundary conditions for vertical walls added to the multigrid solver.
They are applied using new wall flag arrays (wall_flags_..) which are defined
for each grid level. New argument gls added to routine user_init_grid
(user_interface).

Frequence of sorting particles can be controlled with new particles_par
parameter dt_sort_particles. Sorting is moved from the SGS timestep loop in
advec_particles after the end of this loop.

advec_particles, check_parameters, data_output_dvrp, header, init_3d_model, init_grid, init_particles, init_pegrid, modules, package_parin, parin, plant_canopy_model, read_var_list, read_3d_binary, user_interface, write_var_list, write_3d_binary

Changed:

Redefine initial nzb_local as the actual total size of topography (later the
extent of topography in nzb_local is reduced by 1dx at the E topography walls
and by 1dy at the N topography walls to form the basis for nzb_s_inner);
for consistency redefine 'single_building' case.

Vertical profiles now based on nzb_s_inner; they are divided by
ngp_2dh_s_inner (scalars, procucts of scalars) and ngp_2dh (staggered velocity
components and their products, procucts of scalars and velocity components),
respectively.

Allow two instead of one digit to specify isosurface and slicer variables.

Status of 3D-volume NetCDF data file only depends on switch netcdf_64bit_3d (check_open)

prognostic_equations include the respective wall_*flux in the parameter list of
calls of diffusion_s. Same as before, only the values of wall_heatflux(0:4)
can be assigned. At present, wall_humidityflux, wall_qflux, wall_salinityflux,
and wall_scalarflux are kept zero. diffusion_s uses the respective wall_*flux
instead of wall_heatflux. This update serves two purposes:

it avoids errors in calculations with humidity/scalar/salinity and prescribed

non-zero wall_heatflux,

it prepares PALM for a possible assignment of wall fluxes of

humidity/scalar/salinity in a future release.

buoyancy, check_open, data_output_dvrp, diffusion_s, diffusivities, flow_statistics, header, init_3d_model, init_dvrp, init_grid, modules, prognostic_equations

Errors:

Bugfix: summation of sums_l_l in diffusivities.

Several bugfixes in the ocean part: Initial density rho is calculated
(init_ocean). Error in initializing u_init and v_init removed
(check_parameters). Calculation of density flux now starts from
nzb+1 (production_e).

Bugfix: pleft/pright changed to pnorth/psouth in sendrecv of particle tail
numbers along y, small bugfixes in the SGS part (advec_particles)

Bugfix: model_string needed a default value (combine_plot_fields)

Bugfix: wavenumber calculation for even nx in routines maketri (poisfft)

Bugfix: assignment of fluxes at walls

Bugfix: absolute value of f must be used when calculating the Blackadar mixing length (init_1d_model)

advec_particles, check_parameters, combine_plot_fields, diffusion_s, diffusivities, init_ocean, init_1d_model, poisfft, production_e

Property svn:keywords set to Id

File size: 20.5 KB

Rev	Line
[1]	1	SUBROUTINE init_particles
	2
	3	!------------------------------------------------------------------------------!
	4	! Actual revisions:
	5	! -----------------
[139]	6	!
[1]	7	!
	8	! Former revisions:
	9	! -----------------
[3]	10	! $Id: init_particles.f90 139 2007-11-29 09:37:41Z letzel $
[39]	11	!
[139]	12	! 117 2007-10-11 03:27:59Z raasch
	13	! Sorting of particles only in case of cloud droplets
	14	!
[110]	15	! 106 2007-08-16 14:30:26Z raasch
	16	! variable iran replaced by iran_part
	17	!
[83]	18	! 82 2007-04-16 15:40:52Z raasch
	19	! Preprocessor directives for old systems removed
	20	!
[77]	21	! 70 2007-03-18 23:46:30Z raasch
	22	! displacements for mpi_particle_type changed, age_m initialized,
	23	! particles-package is now part of the default code
	24	!
[39]	25	! 16 2007-02-15 13:16:47Z raasch
	26	! Bugfix: MPI_REAL in MPI_ALLREDUCE replaced by MPI_INTEGER
	27	!
	28	! r4 \| raasch \| 2007-02-13 12:33:16 +0100 (Tue, 13 Feb 2007)
[3]	29	! RCS Log replace by Id keyword, revision history cleaned up
	30	!
[1]	31	! Revision 1.24 2007/02/11 13:00:17 raasch
	32	! Bugfix: allocation of tail_mask and new_tail_id in case of restart-runs
	33	! Bugfix: __ was missing in a cpp-directive
	34	!
	35	! Revision 1.1 1999/11/25 16:22:38 raasch
	36	! Initial revision
	37	!
	38	!
	39	! Description:
	40	! ------------
	41	! This routine initializes a set of particles and their attributes (position,
	42	! radius, ..). Advection of these particles is carried out by advec_particles,
	43	! plotting is done in data_output_dvrp.
	44	!------------------------------------------------------------------------------!
	45
	46	USE arrays_3d
	47	USE control_parameters
	48	USE grid_variables
	49	USE indices
	50	USE particle_attributes
	51	USE pegrid
	52	USE random_function_mod
	53
	54
	55	IMPLICIT NONE
	56
	57	CHARACTER (LEN=10) :: particle_binary_version, version_on_file
	58
	59	INTEGER :: i, j, n, nn
	60	#if defined( __parallel )
	61	INTEGER, DIMENSION(3) :: blocklengths, displacements, types
	62	#endif
	63	LOGICAL :: uniform_particles_l
	64	REAL :: factor, pos_x, pos_y, pos_z, value
	65
	66
	67	#if defined( __parallel )
	68	!
	69	!-- Define MPI derived datatype for FORTRAN datatype particle_type (see module
[82]	70	!-- particle_attributes). Integer length is 4 byte, Real is 8 byte
	71	blocklengths(1) = 19; blocklengths(2) = 4; blocklengths(3) = 1
	72	displacements(1) = 0; displacements(2) = 152; displacements(3) = 168
	73
[1]	74	types(1) = MPI_REAL
	75	types(2) = MPI_INTEGER
	76	types(3) = MPI_UB
	77	CALL MPI_TYPE_STRUCT( 3, blocklengths, displacements, types, &
	78	mpi_particle_type, ierr )
	79	CALL MPI_TYPE_COMMIT( mpi_particle_type, ierr )
	80	#endif
	81
	82	!
	83	!-- Check the number of particle groups.
	84	IF ( number_of_particle_groups > max_number_of_particle_groups ) THEN
	85	PRINT*, '+++ WARNING: init_particles: ', &
	86	'max_number_of_particle_groups =', &
	87	max_number_of_particle_groups
	88	PRINT*, '+++ number_of_particle_groups reset to ', &
	89	max_number_of_particle_groups
	90	number_of_particle_groups = max_number_of_particle_groups
	91	ENDIF
	92
	93	!
	94	!-- Set default start positions, if necessary
	95	IF ( psl(1) == 9999999.9 ) psl(1) = -0.5 * dx
	96	IF ( psr(1) == 9999999.9 ) psr(1) = ( nx + 0.5 ) * dx
	97	IF ( pss(1) == 9999999.9 ) pss(1) = -0.5 * dy
	98	IF ( psn(1) == 9999999.9 ) psn(1) = ( ny + 0.5 ) * dy
	99	IF ( psb(1) == 9999999.9 ) psb(1) = zu(nz/2)
	100	IF ( pst(1) == 9999999.9 ) pst(1) = psb(1)
	101
	102	IF ( pdx(1) == 9999999.9 .OR. pdx(1) == 0.0 ) pdx(1) = dx
	103	IF ( pdy(1) == 9999999.9 .OR. pdy(1) == 0.0 ) pdy(1) = dy
	104	IF ( pdz(1) == 9999999.9 .OR. pdz(1) == 0.0 ) pdz(1) = zu(2) - zu(1)
	105
	106	DO j = 2, number_of_particle_groups
	107	IF ( psl(j) == 9999999.9 ) psl(j) = psl(j-1)
	108	IF ( psr(j) == 9999999.9 ) psr(j) = psr(j-1)
	109	IF ( pss(j) == 9999999.9 ) pss(j) = pss(j-1)
	110	IF ( psn(j) == 9999999.9 ) psn(j) = psn(j-1)
	111	IF ( psb(j) == 9999999.9 ) psb(j) = psb(j-1)
	112	IF ( pst(j) == 9999999.9 ) pst(j) = pst(j-1)
	113	IF ( pdx(j) == 9999999.9 .OR. pdx(j) == 0.0 ) pdx(j) = pdx(j-1)
	114	IF ( pdy(j) == 9999999.9 .OR. pdy(j) == 0.0 ) pdy(j) = pdy(j-1)
	115	IF ( pdz(j) == 9999999.9 .OR. pdz(j) == 0.0 ) pdz(j) = pdz(j-1)
	116	ENDDO
	117
	118	!
	119	!-- For the first model run of a possible job chain initialize the
	120	!-- particles, otherwise read the particle data from file.
	121	IF ( TRIM( initializing_actions ) == 'read_restart_data' &
	122	.AND. read_particles_from_restartfile ) THEN
	123
	124	!
	125	!-- Read particle data from previous model run.
	126	!-- First open the input unit.
	127	IF ( myid_char == '' ) THEN
	128	OPEN ( 90, FILE='PARTICLE_RESTART_DATA_IN'//myid_char, &
	129	FORM='UNFORMATTED' )
	130	ELSE
	131	OPEN ( 90, FILE='PARTICLE_RESTART_DATA_IN/'//myid_char, &
	132	FORM='UNFORMATTED' )
	133	ENDIF
	134
	135	!
	136	!-- First compare the version numbers
	137	READ ( 90 ) version_on_file
	138	particle_binary_version = '3.0'
	139	IF ( TRIM( version_on_file ) /= TRIM( particle_binary_version ) ) THEN
	140	IF ( myid == 0 ) THEN
	141	PRINT*, '+++ init_particles: version mismatch concerning data ', &
	142	'from prior run'
	143	PRINT*, ' version on file = "', TRIM( version_on_file ),&
	144	'"'
	145	PRINT*, ' version in program = "', &
	146	TRIM( particle_binary_version ), '"'
	147	ENDIF
	148	CALL local_stop
	149	ENDIF
	150
	151	!
	152	!-- Read some particle parameters and the size of the particle arrays,
	153	!-- allocate them and read their contents.
	154	READ ( 90 ) bc_par_b, bc_par_lr, bc_par_ns, bc_par_t, &
	155	maximum_number_of_particles, maximum_number_of_tailpoints, &
	156	maximum_number_of_tails, number_of_initial_particles, &
	157	number_of_particles, number_of_particle_groups, &
	158	number_of_tails, particle_groups, time_prel, &
	159	time_write_particle_data, uniform_particles
	160
	161	IF ( number_of_initial_particles /= 0 ) THEN
	162	ALLOCATE( initial_particles(1:number_of_initial_particles) )
	163	READ ( 90 ) initial_particles
	164	ENDIF
	165
	166	ALLOCATE( prt_count(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	167	prt_start_index(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	168	particle_mask(maximum_number_of_particles), &
	169	particles(maximum_number_of_particles) )
	170
	171	READ ( 90 ) prt_count, prt_start_index
	172	READ ( 90 ) particles
	173
	174	IF ( use_particle_tails ) THEN
	175	ALLOCATE( particle_tail_coordinates(maximum_number_of_tailpoints,5, &
	176	maximum_number_of_tails), &
	177	new_tail_id(maximum_number_of_tails), &
	178	tail_mask(maximum_number_of_tails) )
	179	READ ( 90 ) particle_tail_coordinates
	180	ENDIF
	181
	182	CLOSE ( 90 )
	183
	184	ELSE
	185
	186	!
	187	!-- Allocate particle arrays and set attributes of the initial set of
	188	!-- particles, which can be also periodically released at later times.
	189	!-- Also allocate array for particle tail coordinates, if needed.
	190	ALLOCATE( prt_count(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	191	prt_start_index(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	192	particle_mask(maximum_number_of_particles), &
	193	particles(maximum_number_of_particles) )
	194
	195	!
	196	!-- Initialize all particles with dummy values (otherwise errors may
	197	!-- occur within restart runs). The reason for this is still not clear
	198	!-- and may be presumably caused by errors in the respective user-interface.
	199	particles = particle_type( 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &
	200	0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &
[57]	201	0.0, 0, 0, 0, 0 )
[1]	202	particle_groups = particle_groups_type( 0.0, 0.0, 0.0, 0.0 )
	203
	204	!
	205	!-- Set the default particle size used for dvrp plots
	206	IF ( dvrp_psize == 9999999.9 ) dvrp_psize = 0.2 * dx
	207
	208	!
	209	!-- Set values for the density ratio and radius for all particle
	210	!-- groups, if necessary
	211	IF ( density_ratio(1) == 9999999.9 ) density_ratio(1) = 0.0
	212	IF ( radius(1) == 9999999.9 ) radius(1) = 0.0
	213	DO i = 2, number_of_particle_groups
	214	IF ( density_ratio(i) == 9999999.9 ) THEN
	215	density_ratio(i) = density_ratio(i-1)
	216	ENDIF
	217	IF ( radius(i) == 9999999.9 ) radius(i) = radius(i-1)
	218	ENDDO
	219
	220	DO i = 1, number_of_particle_groups
	221	IF ( density_ratio(i) /= 0.0 .AND. radius(i) == 0 ) THEN
	222	IF ( myid == 0 ) THEN
	223	PRINT*, '+++ init_particles: particle group #', i, 'has a', &
	224	'density ratio /= 0 but radius = 0'
	225	ENDIF
	226	CALL local_stop
	227	ENDIF
	228	particle_groups(i)%density_ratio = density_ratio(i)
	229	particle_groups(i)%radius = radius(i)
	230	ENDDO
	231
	232	!
	233	!-- Calculate particle positions and store particle attributes, if
	234	!-- particle is situated on this PE
	235	n = 0
	236
	237	DO i = 1, number_of_particle_groups
	238
	239	pos_z = psb(i)
	240
	241	DO WHILE ( pos_z <= pst(i) )
	242
	243	pos_y = pss(i)
	244
	245	DO WHILE ( pos_y <= psn(i) )
	246
	247	IF ( pos_y >= ( nys - 0.5 ) * dy .AND. &
	248	pos_y < ( nyn + 0.5 ) * dy ) THEN
	249
	250	pos_x = psl(i)
	251
	252	DO WHILE ( pos_x <= psr(i) )
	253
	254	IF ( pos_x >= ( nxl - 0.5 ) * dx .AND. &
	255	pos_x < ( nxr + 0.5 ) * dx ) THEN
	256
	257	DO j = 1, particles_per_point
	258
	259	n = n + 1
	260	IF ( n > maximum_number_of_particles ) THEN
	261	PRINT*,'+++ init_particles: number of initial', &
	262	' particles (', n, ') exceeds'
	263	PRINT*,' maximum_number_of_particles (', &
	264	maximum_number_of_particles, ') on PE ', &
	265	myid
	266	#if defined( __parallel )
	267	CALL MPI_ABORT( comm2d, 9999, ierr )
	268	#else
	269	CALL local_stop
	270	#endif
	271	ENDIF
	272	particles(n)%x = pos_x
	273	particles(n)%y = pos_y
	274	particles(n)%z = pos_z
	275	particles(n)%age = 0.0
[57]	276	particles(n)%age_m = 0.0
[1]	277	particles(n)%dt_sum = 0.0
	278	particles(n)%dvrp_psize = dvrp_psize
	279	particles(n)%e_m = 0.0
	280	particles(n)%speed_x = 0.0
	281	particles(n)%speed_x_sgs = 0.0
	282	particles(n)%speed_y = 0.0
	283	particles(n)%speed_y_sgs = 0.0
	284	particles(n)%speed_z = 0.0
	285	particles(n)%speed_z_sgs = 0.0
	286	particles(n)%origin_x = pos_x
	287	particles(n)%origin_y = pos_y
	288	particles(n)%origin_z = pos_z
	289	particles(n)%radius = particle_groups(i)%radius
	290	particles(n)%weight_factor =initial_weighting_factor
	291	particles(n)%color = 1
	292	particles(n)%group = i
	293	particles(n)%tailpoints = 0
	294	IF ( use_particle_tails .AND. &
	295	MOD( n, skip_particles_for_tail ) == 0 ) THEN
	296	number_of_tails = number_of_tails + 1
	297	!
	298	!-- This is a temporary provisional setting (see
	299	!-- further below!)
	300	particles(n)%tail_id = number_of_tails
	301	ELSE
	302	particles(n)%tail_id = 0
	303	ENDIF
	304
	305	ENDDO
	306
	307	ENDIF
	308
	309	pos_x = pos_x + pdx(i)
	310
	311	ENDDO
	312
	313	ENDIF
	314
	315	pos_y = pos_y + pdy(i)
	316
	317	ENDDO
	318
	319	pos_z = pos_z + pdz(i)
	320
	321	ENDDO
	322
	323	ENDDO
	324
	325	number_of_initial_particles = n
	326	number_of_particles = n
	327
	328	!
	329	!-- Calculate the number of particles and tails of the total domain
	330	#if defined( __parallel )
	331	CALL MPI_ALLREDUCE( number_of_particles, total_number_of_particles, 1, &
[16]	332	MPI_INTEGER, MPI_SUM, comm2d, ierr )
[1]	333	CALL MPI_ALLREDUCE( number_of_tails, total_number_of_tails, 1, &
[16]	334	MPI_INTEGER, MPI_SUM, comm2d, ierr )
[1]	335	#else
	336	total_number_of_particles = number_of_particles
	337	total_number_of_tails = number_of_tails
	338	#endif
	339
	340	!
	341	!-- Set a seed value for the random number generator to be exclusively
	342	!-- used for the particle code. The generated random numbers should be
	343	!-- different on the different PEs.
	344	iran_part = iran_part + myid
	345
	346	!
	347	!-- User modification of initial particles
	348	CALL user_init_particles
	349
	350	!
	351	!-- Store the initial set of particles for release at later times
	352	IF ( number_of_initial_particles /= 0 ) THEN
	353	ALLOCATE( initial_particles(1:number_of_initial_particles) )
	354	initial_particles(1:number_of_initial_particles) = &
	355	particles(1:number_of_initial_particles)
	356	ENDIF
	357
	358	!
	359	!-- Add random fluctuation to particle positions
	360	IF ( random_start_position ) THEN
	361
	362	DO n = 1, number_of_initial_particles
	363	IF ( psl(particles(n)%group) /= psr(particles(n)%group) ) THEN
	364	particles(n)%x = particles(n)%x + &
[106]	365	( random_function( iran_part ) - 0.5 ) * &
[1]	366	pdx(particles(n)%group)
	367	IF ( particles(n)%x <= ( nxl - 0.5 ) * dx ) THEN
	368	particles(n)%x = ( nxl - 0.4999999999 ) * dx
	369	ELSEIF ( particles(n)%x >= ( nxr + 0.5 ) * dx ) THEN
	370	particles(n)%x = ( nxr + 0.4999999999 ) * dx
	371	ENDIF
	372	ENDIF
	373	IF ( pss(particles(n)%group) /= psn(particles(n)%group) ) THEN
	374	particles(n)%y = particles(n)%y + &
[106]	375	( random_function( iran_part ) - 0.5 ) * &
[1]	376	pdy(particles(n)%group)
	377	IF ( particles(n)%y <= ( nys - 0.5 ) * dy ) THEN
	378	particles(n)%y = ( nys - 0.4999999999 ) * dy
	379	ELSEIF ( particles(n)%y >= ( nyn + 0.5 ) * dy ) THEN
	380	particles(n)%y = ( nyn + 0.4999999999 ) * dy
	381	ENDIF
	382	ENDIF
	383	IF ( psb(particles(n)%group) /= pst(particles(n)%group) ) THEN
	384	particles(n)%z = particles(n)%z + &
[106]	385	( random_function( iran_part ) - 0.5 ) * &
[1]	386	pdz(particles(n)%group)
	387	ENDIF
	388	ENDDO
	389	ENDIF
	390
	391	!
[117]	392	!-- Sort particles in the sequence the gridboxes are stored in the memory.
	393	!-- Only required if cloud droplets are used.
	394	IF ( cloud_droplets ) CALL sort_particles
[1]	395
	396	!
	397	!-- Open file for statistical informations about particle conditions
	398	IF ( write_particle_statistics ) THEN
	399	CALL check_open( 80 )
	400	WRITE ( 80, 8000 ) current_timestep_number, simulated_time, &
	401	number_of_initial_particles, &
	402	maximum_number_of_particles
	403	CALL close_file( 80 )
	404	ENDIF
	405
	406	!
	407	!-- Check if particles are really uniform in color and radius (dvrp_size)
	408	!-- (uniform_particles is preset TRUE)
	409	IF ( uniform_particles ) THEN
	410	IF ( number_of_initial_particles == 0 ) THEN
	411	uniform_particles_l = .TRUE.
	412	ELSE
	413	n = number_of_initial_particles
	414	IF ( MINVAL( particles(1:n)%dvrp_psize ) == &
	415	MAXVAL( particles(1:n)%dvrp_psize ) .AND. &
	416	MINVAL( particles(1:n)%color ) == &
	417	MAXVAL( particles(1:n)%color ) ) THEN
	418	uniform_particles_l = .TRUE.
	419	ELSE
	420	uniform_particles_l = .FALSE.
	421	ENDIF
	422	ENDIF
	423
	424	#if defined( __parallel )
	425	CALL MPI_ALLREDUCE( uniform_particles_l, uniform_particles, 1, &
	426	MPI_LOGICAL, MPI_LAND, comm2d, ierr )
	427	#else
	428	uniform_particles = uniform_particles_l
	429	#endif
	430
	431	ENDIF
	432
	433	!
	434	!-- Set the beginning of the particle tails and their age
	435	IF ( use_particle_tails ) THEN
	436	!
	437	!-- Choose the maximum number of tails significantly larger than the
	438	!-- one initially required
	439	factor = 10.0
	440	value = number_of_tails
	441	DO WHILE ( value / 10.0 >= 1.0 )
	442	factor = factor * 10.0
	443	value = value / 10.0
	444	ENDDO
	445	maximum_number_of_tails = factor * INT( value )
	446
	447	ALLOCATE( particle_tail_coordinates(maximum_number_of_tailpoints,5, &
	448	maximum_number_of_tails), &
	449	new_tail_id(maximum_number_of_tails), &
	450	tail_mask(maximum_number_of_tails) )
	451
	452	particle_tail_coordinates = 0.0
	453	minimum_tailpoint_distance = minimum_tailpoint_distance**2
	454	number_of_initial_tails = number_of_tails
	455
	456	nn = 0
	457	DO n = 1, number_of_particles
	458	!
	459	!-- Only for those particles marked above with a provisional tail_id
	460	!-- tails will be created. Particles now get their final tail_id.
	461	IF ( particles(n)%tail_id /= 0 ) THEN
	462
	463	nn = nn + 1
	464	particles(n)%tail_id = nn
	465
	466	particle_tail_coordinates(1,1,nn) = particles(n)%x
	467	particle_tail_coordinates(1,2,nn) = particles(n)%y
	468	particle_tail_coordinates(1,3,nn) = particles(n)%z
	469	particle_tail_coordinates(1,4,nn) = particles(n)%color
	470	particles(n)%tailpoints = 1
	471	IF ( minimum_tailpoint_distance /= 0.0 ) THEN
	472	particle_tail_coordinates(2,1,nn) = particles(n)%x
	473	particle_tail_coordinates(2,2,nn) = particles(n)%y
	474	particle_tail_coordinates(2,3,nn) = particles(n)%z
	475	particle_tail_coordinates(2,4,nn) = particles(n)%color
	476	particle_tail_coordinates(1:2,5,nn) = 0.0
	477	particles(n)%tailpoints = 2
	478	ENDIF
	479
	480	ENDIF
	481	ENDDO
	482	ENDIF
	483
	484	!
	485	!-- Plot initial positions of particles (only if particle advection is
	486	!-- switched on from the beginning of the simulation (t=0))
	487	IF ( particle_advection_start == 0.0 ) CALL data_output_dvrp
	488
	489	ENDIF
	490
	491	!
	492	!-- Check boundary condition and set internal variables
	493	SELECT CASE ( bc_par_b )
	494
	495	CASE ( 'absorb' )
	496	ibc_par_b = 1
	497
	498	CASE ( 'reflect' )
	499	ibc_par_b = 2
	500
	501	CASE DEFAULT
	502	IF ( myid == 0 ) THEN
	503	PRINT*,'+++ init_particles: unknown boundary condition ', &
	504	'bc_par_b = "', TRIM( bc_par_b ), '"'
	505	ENDIF
	506	CALL local_stop
	507
	508	END SELECT
	509	SELECT CASE ( bc_par_t )
	510
	511	CASE ( 'absorb' )
	512	ibc_par_t = 1
	513
	514	CASE ( 'reflect' )
	515	ibc_par_t = 2
	516
	517	CASE DEFAULT
	518	IF ( myid == 0 ) THEN
	519	PRINT*,'+++ init_particles: unknown boundary condition ', &
	520	'bc_par_t = "', TRIM( bc_par_t ), '"'
	521	ENDIF
	522	CALL local_stop
	523
	524	END SELECT
	525	SELECT CASE ( bc_par_lr )
	526
	527	CASE ( 'cyclic' )
	528	ibc_par_lr = 0
	529
	530	CASE ( 'absorb' )
	531	ibc_par_lr = 1
	532
	533	CASE ( 'reflect' )
	534	ibc_par_lr = 2
	535
	536	CASE DEFAULT
	537	IF ( myid == 0 ) THEN
	538	PRINT*,'+++ init_particles: unknown boundary condition ', &
	539	'bc_par_lr = "', TRIM( bc_par_lr ), '"'
	540	ENDIF
	541	CALL local_stop
	542
	543	END SELECT
	544	SELECT CASE ( bc_par_ns )
	545
	546	CASE ( 'cyclic' )
	547	ibc_par_ns = 0
	548
	549	CASE ( 'absorb' )
	550	ibc_par_ns = 1
	551
	552	CASE ( 'reflect' )
	553	ibc_par_ns = 2
	554
	555	CASE DEFAULT
	556	IF ( myid == 0 ) THEN
	557	PRINT*,'+++ init_particles: unknown boundary condition ', &
	558	'bc_par_ns = "', TRIM( bc_par_ns ), '"'
	559	ENDIF
	560	CALL local_stop
	561
	562	END SELECT
	563	!
	564	!-- Formats
	565	8000 FORMAT (I6,1X,F7.2,4X,I6,71X,I6)
	566
	567	END SUBROUTINE init_particles

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source: palm/trunk/SOURCE/init_particles.f90 @ 149

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