source: palm/trunk/SOURCE/inflow_turbulence.f90 @ 198

Last change on this file since 198 was 198, checked in by raasch, 13 years ago

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1 SUBROUTINE inflow_turbulence
2
3!------------------------------------------------------------------------------!
4! Actual revisions:
5! -----------------
6!
7!
8! Former revisions:
9! -----------------
10! $Id: inflow_turbulence.f90 198 2008-09-17 08:55:28Z raasch $
11!
12! Initial version (2008/03/07)
13!
14! Description:
15! ------------
16! Imposing turbulence at the respective inflow using the turbulence
17! recycling method of Kataoka and Mizuno (2002).
18!------------------------------------------------------------------------------!
19
20    USE arrays_3d
21    USE control_parameters
22    USE cpulog
23    USE grid_variables
24    USE indices
25    USE interfaces
26    USE pegrid
27
28
29    IMPLICIT NONE
30
31    INTEGER ::  i, imax, j, k, ngp_ifd, ngp_pr
32
33    REAL, DIMENSION(1:2) ::  volume_flow_l, volume_flow_offset
34    REAL, DIMENSION(nzb:nzt+1,5) ::  avpr, avpr_l
35    REAL, DIMENSION(nzb:nzt+1,nys-1:nyn+1,5) ::  inflow_dist
36
37    CALL cpu_log( log_point(40), 'inflow_turbulence', 'start' )
38
39!
40!-- Carry out horizontal averaging in the recycling plane
41    avpr_l = 0.0
42    ngp_pr = ( nzt - nzb + 2 ) * 5
43    ngp_ifd = ngp_pr * ( nyn - nys + 3 )
44
45!
46!-- First, local averaging within the recycling domain
47    IF ( recycling_plane >= nxl )  THEN
48
49       imax = MIN( nxr, recycling_plane )
50
51       DO  i = nxl, imax
52          DO  j = nys, nyn
53             DO  k = nzb, nzt+1
54
55                avpr_l(k,1) = avpr_l(k,1) + u(k,j,i)
56                avpr_l(k,2) = avpr_l(k,2) + v(k,j,i)
57                avpr_l(k,3) = avpr_l(k,3) + w(k,j,i)
58                avpr_l(k,4) = avpr_l(k,4) + pt(k,j,i)
59                avpr_l(k,5) = avpr_l(k,5) + e(k,j,i)
60
61             ENDDO
62          ENDDO
63       ENDDO
64
65    ENDIF
66
67!    WRITE (9,*) '*** averaged profiles avpr_l'
68!    DO  k = nzb, nzt+1
69!       WRITE (9,'(F5.1,1X,F5.1,1X,F5.1,1X,F6.1,1X,F7.2)') avpr_l(k,1),avpr_l(k,2),avpr_l(k,3),avpr_l(k,4),avpr_l(k,5)
70!    ENDDO
71!    WRITE (9,*) ' '
72
73#if defined( __parallel )
74!
75!-- Now, averaging over all PEs
76    CALL MPI_ALLREDUCE( avpr_l(nzb,1), avpr(nzb,1), ngp_pr, MPI_REAL, MPI_SUM, &
77                        comm2d, ierr )
78#else
79    avpr = avpr_l
80#endif
81
82    avpr = avpr / ( ( ny + 1 ) * ( recycling_plane + 1 ) )
83
84!    WRITE (9,*) '*** averaged profiles'
85!    DO  k = nzb, nzt+1
86!       WRITE (9,'(F5.1,1X,F5.1,1X,F5.1,1X,F6.1,1X,F7.2)') avpr(k,1),avpr(k,2),avpr(k,3),avpr(k,4),avpr(k,5)
87!    ENDDO
88!    WRITE (9,*) ' '
89
90!
91!-- Calculate the disturbances at the recycling plane
92    i = recycling_plane
93
94    IF ( myidx == id_recycling )  THEN
95
96       DO  j = nys-1, nyn+1
97          DO  k = nzb, nzt+1
98
99              inflow_dist(k,j,1) = u(k,j,i+1) - avpr(k,1)
100              inflow_dist(k,j,2) = v(k,j,i)   - avpr(k,2)
101              inflow_dist(k,j,3) = w(k,j,i)   - avpr(k,3)
102              inflow_dist(k,j,4) = pt(k,j,i)  - avpr(k,4)
103              inflow_dist(k,j,5) = e(k,j,i)   - avpr(k,5)
104
105          ENDDO
106       ENDDO
107
108    ENDIF
109
110!
111!-- For parallel runs, send the disturbances to the respective inflow PE
112#if defined( __parallel )
113    IF ( myidx == id_recycling  .AND.  myidx /= id_inflow )  THEN
114
115       CALL MPI_SEND( inflow_dist(nzb,nys-1,1), ngp_ifd, MPI_REAL, &
116                      id_inflow, 1, comm1dx, ierr )
117
118    ELSEIF ( myidx /= id_recycling  .AND.  myidx == id_inflow )  THEN
119
120       inflow_dist = 0.0
121       CALL MPI_RECV( inflow_dist(nzb,nys-1,1), ngp_ifd, MPI_REAL, &
122                      id_recycling, 1, comm1dx, status, ierr )
123
124    ENDIF
125#endif
126
127!
128!-- Add the disturbance at the inflow
129    IF ( nxl == 0 )  THEN
130
131       DO  j = nys-1, nyn+1
132          DO  k = nzb, nzt+1
133
134!              WRITE (9,*) 'j=',j,' k=',k
135!              WRITE (9,*) 'mean_u = ', mean_inflow_profiles(k,1), ' dist_u = ',&
136!                          inflow_dist(k,j,1)
137!              WRITE (9,*) 'mean_v = ', mean_inflow_profiles(k,2), ' dist_v = ',&
138!                          inflow_dist(k,j,2)
139!              WRITE (9,*) 'mean_w = 0.0', ' dist_w = ',&
140!                          inflow_dist(k,j,3)
141!              WRITE (9,*) 'mean_pt = ', mean_inflow_profiles(k,4), ' dist_pt = ',&
142!                          inflow_dist(k,j,4)
143!              WRITE (9,*) 'mean_e = ', mean_inflow_profiles(k,5), ' dist_e = ',&
144!                          inflow_dist(k,j,5)
145              u(k,j,0)   = mean_inflow_profiles(k,1) + &
146                           inflow_dist(k,j,1) * inflow_damping_factor(k)
147              v(k,j,-1)  = mean_inflow_profiles(k,2) + &
148                           inflow_dist(k,j,2) * inflow_damping_factor(k)
149              w(k,j,-1)  = inflow_dist(k,j,3) * inflow_damping_factor(k)
150              pt(k,j,-1) = mean_inflow_profiles(k,4) + &
151                           inflow_dist(k,j,4) * inflow_damping_factor(k)
152              e(k,j,-1)  = mean_inflow_profiles(k,5) + &
153                           inflow_dist(k,j,5) * inflow_damping_factor(k)
154              e(k,j,-1)  = MAX( e(k,j,-1), 0.0 )
155
156          ENDDO
157       ENDDO
158
159    ENDIF
160
161!
162!-- Conserve the volume flow at the inflow in order to avoid generation of
163!-- waves in the stable layer
164!    IF ( conserve_volume_flow  .AND.  inflow_l )  THEN
165
166!       volume_flow(1)   = 0.0
167!       volume_flow_l(1) = 0.0
168
169!       i = 0
170
171!       DO  j = nys, nyn
172!
173!--       Sum up the volume flow through the south/north boundary
174!          DO  k = nzb_2d(j,i) + 1, nzt
175!             volume_flow_l(1) = volume_flow_l(1) + u(k,j,i) * dzu(k)
176!          ENDDO
177!       ENDDO
178
179#if defined( __parallel )   
180!       CALL MPI_ALLREDUCE( volume_flow_l(1), volume_flow(1), 1, MPI_REAL, &
181!                           MPI_SUM, comm1dy, ierr )   
182#else
183!       volume_flow = volume_flow_l 
184#endif
185!       volume_flow_offset(1) = ( volume_flow_initial(1) - volume_flow(1) )    &
186!                               / volume_flow_area(1)
187
188!       DO  j = nys-1, nyn+1
189!          DO  k = nzb_v_inner(j,i) + 1, nzt
190!             u(k,j,i) = u(k,j,i) + volume_flow_offset(1)
191!          ENDDO
192!       ENDDO
193
194!    ENDIF
195
196    CALL cpu_log( log_point(40), 'inflow_turbulence', 'stop' )
197
198
199 END SUBROUTINE inflow_turbulence
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