source: palm/trunk/SOURCE/lpm_release_set.f90 @ 1310

Last change on this file since 1310 was 1310, checked in by raasch, 7 years ago

update of GPL copyright

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1 SUBROUTINE lpm_release_set
2
3!--------------------------------------------------------------------------------!
4! This file is part of PALM.
5!
6! PALM is free software: you can redistribute it and/or modify it under the terms
7! of the GNU General Public License as published by the Free Software Foundation,
8! either version 3 of the License, or (at your option) any later 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 1997-2014 Leibniz Universitaet Hannover
18!--------------------------------------------------------------------------------!
19!
20! Current revisions:
21! ------------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: lpm_release_set.f90 1310 2014-03-14 08:01:56Z raasch $
27!
28! 1036 2012-10-22 13:43:42Z raasch
29! code put under GPL (PALM 3.9)
30!
31! 849 2012-03-15 10:35:09Z raasch
32! initial revision (former part of advec_particles)
33!
34!
35! Description:
36! ------------
37! Release a new set of particles and, if required, particle tails. These
38! particles/tails are added at the end of the existing arrays. Extend the
39! respective particle and tail arrays, if neccessary.
40!------------------------------------------------------------------------------!
41
42    USE control_parameters
43    USE grid_variables
44    USE indices
45    USE particle_attributes
46    USE random_function_mod
47
48    IMPLICIT NONE
49
50    INTEGER ::  ie, is, n, nn
51
52
53!
54!-- Check, if particle storage must be extended
55    IF ( number_of_particles + number_of_initial_particles > &
56         maximum_number_of_particles  )  THEN
57       IF ( netcdf_output  .AND.  netcdf_data_format < 3 )  THEN
58          message_string = 'maximum_number_of_particles needs to be increa' // &
59                           'sed &but this is not allowed with netcdf_data_' // &
60                           'format < 3'
61          CALL message( 'lpm_release_set', 'PA0146', 2, 2, -1, 6, 1 )
62       ELSE
63          CALL lpm_extend_particle_array( number_of_initial_particles )
64       ENDIF
65    ENDIF
66
67!
68!-- Check, if tail storage must be extended
69    IF ( use_particle_tails )  THEN
70       IF ( number_of_tails + number_of_initial_tails > &
71            maximum_number_of_tails  )  THEN
72          IF ( netcdf_output  .AND.  netcdf_data_format < 3 )  THEN
73             message_string = 'maximum_number_of_tails needs to be increas' // &
74                              'ed &but this is not allowed with netcdf_dat' // &
75                              'a_format < 3'
76             CALL message( 'lpm_release_set', 'PA0147', 2, 2, -1, 6, 1 )
77          ELSE
78             CALL lpm_extend_tail_array( number_of_initial_tails )
79          ENDIF
80       ENDIF
81    ENDIF
82
83    IF ( number_of_initial_particles /= 0 )  THEN
84
85       is = number_of_particles + 1
86       ie = number_of_particles + number_of_initial_particles
87       particles(is:ie) = initial_particles(1:number_of_initial_particles)
88!
89!--    Add random fluctuation to particle positions. Particles should
90!--    remain in the subdomain.
91       IF ( random_start_position )  THEN
92
93          DO  n = is, ie
94
95             IF ( psl(particles(n)%group) /= psr(particles(n)%group) )  THEN
96                particles(n)%x = particles(n)%x +                         &
97                                 ( random_function( iran_part ) - 0.5 ) * &
98                                 pdx(particles(n)%group)
99                IF ( particles(n)%<=  ( nxl - 0.5 ) * dx )  THEN
100                   particles(n)%x = ( nxl - 0.4999999999 ) * dx
101                ELSEIF ( particles(n)%>=  ( nxr + 0.5 ) * dx )  THEN
102                   particles(n)%x = ( nxr + 0.4999999999 ) * dx
103                ENDIF
104             ENDIF
105
106             IF ( pss(particles(n)%group) /= psn(particles(n)%group) )  THEN
107                particles(n)%y = particles(n)%y +                         &
108                                 ( random_function( iran_part ) - 0.5 ) * &
109                                 pdy(particles(n)%group)
110                IF ( particles(n)%<=  ( nys - 0.5 ) * dy )  THEN
111                   particles(n)%y = ( nys - 0.4999999999 ) * dy
112                ELSEIF ( particles(n)%>=  ( nyn + 0.5 ) * dy )  THEN
113                   particles(n)%y = ( nyn + 0.4999999999 ) * dy
114                ENDIF
115             ENDIF
116
117             IF ( psb(particles(n)%group) /= pst(particles(n)%group) )  THEN
118                particles(n)%z = particles(n)%z +                         &
119                                 ( random_function( iran_part ) - 0.5 ) * &
120                                 pdz(particles(n)%group)
121             ENDIF
122
123          ENDDO
124
125       ENDIF
126
127!
128!--    Set the beginning of the new particle tails and their age
129       IF ( use_particle_tails )  THEN
130
131          DO  n = is, ie
132!
133!--          New particles which should have a tail, already have got a
134!--          provisional tail id unequal zero (see lpm_init)
135             IF ( particles(n)%tail_id /= 0 )  THEN
136
137                number_of_tails = number_of_tails + 1
138                nn = number_of_tails
139                particles(n)%tail_id = nn   ! set the final tail id
140                particle_tail_coordinates(1,1,nn) = particles(n)%x
141                particle_tail_coordinates(1,2,nn) = particles(n)%y
142                particle_tail_coordinates(1,3,nn) = particles(n)%z
143                particle_tail_coordinates(1,4,nn) = particles(n)%class
144                particles(n)%tailpoints = 1
145
146                IF ( minimum_tailpoint_distance /= 0.0 )  THEN
147                   particle_tail_coordinates(2,1,nn) = particles(n)%x
148                   particle_tail_coordinates(2,2,nn) = particles(n)%y
149                   particle_tail_coordinates(2,3,nn) = particles(n)%z
150                   particle_tail_coordinates(2,4,nn) = particles(n)%class
151                   particle_tail_coordinates(1:2,5,nn) = 0.0
152                   particles(n)%tailpoints = 2
153                ENDIF
154
155             ENDIF
156
157          ENDDO
158
159       ENDIF
160
161       number_of_particles = number_of_particles + number_of_initial_particles
162
163    ENDIF
164
165 END SUBROUTINE lpm_release_set
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