Home

Context Navigation

source: palm/trunk/SOURCE/boundary_conds.f90 @ 1992

Last change on this file since 1992 was 1992, checked in by suehring, 8 years ago
Prescribing scalar flux at model top; several bugfixes concering data output of scalars and output of flight data
Property svn:keywords set to `Id`
File size: 33.6 KB

Line
1	!> @file boundary_conds.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 terms
6	! of the GNU General Public License as published by the Free Software Foundation,
7	! either version 3 of the License, or (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with
14	! PALM. If not, see <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2016 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! -----------------
21	! Adjustments for top boundary condition for passive scalar
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: boundary_conds.f90 1992 2016-08-12 15:14:59Z suehring $
26	!
27	! 1960 2016-07-12 16:34:24Z suehring
28	! Treat humidity and passive scalar separately
29	!
30	! 1823 2016-04-07 08:57:52Z hoffmann
31	! Initial version of purely vertical nesting introduced.
32	!
33	! 1822 2016-04-07 07:49:42Z hoffmann
34	! icloud_scheme removed. microphyisics_seifert added.
35	!
36	! 1764 2016-02-28 12:45:19Z raasch
37	! index bug for u_p at left outflow removed
38	!
39	! 1762 2016-02-25 12:31:13Z hellstea
40	! Introduction of nested domain feature
41	!
42	! 1742 2016-01-13 09:50:06Z raasch
43	! bugfix for outflow Neumann boundary conditions at bottom and top
44	!
45	! 1717 2015-11-11 15:09:47Z raasch
46	! Bugfix: index error in outflow conditions for left boundary
47	!
48	! 1682 2015-10-07 23:56:08Z knoop
49	! Code annotations made doxygen readable
50	!
51	! 1410 2014-05-23 12:16:18Z suehring
52	! Bugfix: set dirichlet boundary condition for passive_scalar at model domain
53	! top
54	!
55	! 1399 2014-05-07 11:16:25Z heinze
56	! Bugfix: set inflow boundary conditions also if no humidity or passive_scalar
57	! is used.
58	!
59	! 1398 2014-05-07 11:15:00Z heinze
60	! Dirichlet-condition at the top for u and v changed to u_init and v_init also
61	! for large_scale_forcing
62	!
63	! 1380 2014-04-28 12:40:45Z heinze
64	! Adjust Dirichlet-condition at the top for pt in case of nudging
65	!
66	! 1361 2014-04-16 15:17:48Z hoffmann
67	! Bottom and top boundary conditions of rain water content (qr) and
68	! rain drop concentration (nr) changed to Dirichlet
69	!
70	! 1353 2014-04-08 15:21:23Z heinze
71	! REAL constants provided with KIND-attribute
72	!
73	! 1320 2014-03-20 08:40:49Z raasch
74	! ONLY-attribute added to USE-statements,
75	! kind-parameters added to all INTEGER and REAL declaration statements,
76	! kinds are defined in new module kinds,
77	! revision history before 2012 removed,
78	! comment fields (!:) to be used for variable explanations added to
79	! all variable declaration statements
80	!
81	! 1257 2013-11-08 15:18:40Z raasch
82	! loop independent clauses added
83	!
84	! 1241 2013-10-30 11:36:58Z heinze
85	! Adjust ug and vg at each timestep in case of large_scale_forcing
86	!
87	! 1159 2013-05-21 11:58:22Z fricke
88	! Bugfix: Neumann boundary conditions for the velocity components at the
89	! outflow are in fact radiation boundary conditions using the maximum phase
90	! velocity that ensures numerical stability (CFL-condition).
91	! Hence, logical operator use_cmax is now used instead of bc_lr_dirneu/_neudir.
92	! Bugfix: In case of use_cmax at the outflow, u, v, w are replaced by
93	! u_p, v_p, w_p
94	!
95	! 1115 2013-03-26 18:16:16Z hoffmann
96	! boundary conditions of two-moment cloud scheme are restricted to Neumann-
97	! boundary-conditions
98	!
99	! 1113 2013-03-10 02:48:14Z raasch
100	! GPU-porting
101	! dummy argument "range" removed
102	! Bugfix: wrong index in loops of radiation boundary condition
103	!
104	! 1053 2012-11-13 17:11:03Z hoffmann
105	! boundary conditions for the two new prognostic equations (nr, qr) of the
106	! two-moment cloud scheme
107	!
108	! 1036 2012-10-22 13:43:42Z raasch
109	! code put under GPL (PALM 3.9)
110	!
111	! 996 2012-09-07 10:41:47Z raasch
112	! little reformatting
113	!
114	! 978 2012-08-09 08:28:32Z fricke
115	! Neumann boudnary conditions are added at the inflow boundary for the SGS-TKE.
116	! Outflow boundary conditions for the velocity components can be set to Neumann
117	! conditions or to radiation conditions with a horizontal averaged phase
118	! velocity.
119	!
120	! 875 2012-04-02 15:35:15Z gryschka
121	! Bugfix in case of dirichlet inflow bc at the right or north boundary
122	!
123	! Revision 1.1 1997/09/12 06:21:34 raasch
124	! Initial revision
125	!
126	!
127	! Description:
128	! ------------
129	!> Boundary conditions for the prognostic quantities.
130	!> One additional bottom boundary condition is applied for the TKE (=(u)*2)
131	!> in prandtl_fluxes. The cyclic lateral boundary conditions are implicitly
132	!> handled in routine exchange_horiz. Pressure boundary conditions are
133	!> explicitly set in routines pres, poisfft, poismg and sor.
134	!------------------------------------------------------------------------------!
135	SUBROUTINE boundary_conds
136
137
138	USE arrays_3d, &
139	ONLY: c_u, c_u_m, c_u_m_l, c_v, c_v_m, c_v_m_l, c_w, c_w_m, c_w_m_l, &
140	dzu, e_p, nr_p, pt, pt_p, q, q_p, qr_p, s, s_p, sa, sa_p, &
141	u, ug, u_init, u_m_l, u_m_n, u_m_r, u_m_s, u_p, &
142	v, vg, v_init, v_m_l, v_m_n, v_m_r, v_m_s, v_p, &
143	w, w_p, w_m_l, w_m_n, w_m_r, w_m_s, pt_init
144
145	USE control_parameters, &
146	ONLY: bc_pt_t_val, bc_q_t_val, bc_s_t_val, constant_diffusion, &
147	cloud_physics, dt_3d, humidity, &
148	ibc_pt_b, ibc_pt_t, ibc_q_b, ibc_q_t, ibc_s_b, ibc_s_t, &
149	ibc_sa_t, ibc_uv_b, ibc_uv_t, inflow_l, inflow_n, inflow_r, &
150	inflow_s, intermediate_timestep_count, large_scale_forcing, &
151	microphysics_seifert, nest_domain, nest_bound_l, nest_bound_s, &
152	nudging, ocean, outflow_l, outflow_n, outflow_r, outflow_s, &
153	passive_scalar, tsc, use_cmax
154
155	USE grid_variables, &
156	ONLY: ddx, ddy, dx, dy
157
158	USE indices, &
159	ONLY: nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, &
160	nzb, nzb_s_inner, nzb_w_inner, nzt
161
162	USE kinds
163
164	USE pegrid
165
166	USE pmc_interface, &
167	ONLY : nesting_mode
168
169
170	IMPLICIT NONE
171
172	INTEGER(iwp) :: i !<
173	INTEGER(iwp) :: j !<
174	INTEGER(iwp) :: k !<
175
176	REAL(wp) :: c_max !<
177	REAL(wp) :: denom !<
178
179
180	!
181	!-- Bottom boundary
182	IF ( ibc_uv_b == 1 ) THEN
183	!$acc kernels present( u_p, v_p )
184	u_p(nzb,:,:) = u_p(nzb+1,:,:)
185	v_p(nzb,:,:) = v_p(nzb+1,:,:)
186	!$acc end kernels
187	ENDIF
188
189	!$acc kernels present( nzb_w_inner, w_p )
190	DO i = nxlg, nxrg
191	DO j = nysg, nyng
192	w_p(nzb_w_inner(j,i),j,i) = 0.0_wp
193	ENDDO
194	ENDDO
195	!$acc end kernels
196
197	!
198	!-- Top boundary. A nested domain ( ibc_uv_t = 3 ) does not require settings.
199	IF ( ibc_uv_t == 0 ) THEN
200	!$acc kernels present( u_init, u_p, v_init, v_p )
201	u_p(nzt+1,:,:) = u_init(nzt+1)
202	v_p(nzt+1,:,:) = v_init(nzt+1)
203	!$acc end kernels
204	ELSEIF ( ibc_uv_t == 1 ) THEN
205	!$acc kernels present( u_p, v_p )
206	u_p(nzt+1,:,:) = u_p(nzt,:,:)
207	v_p(nzt+1,:,:) = v_p(nzt,:,:)
208	!$acc end kernels
209	ENDIF
210
211	IF ( .NOT. nest_domain ) THEN
212	!$acc kernels present( w_p )
213	w_p(nzt:nzt+1,:,:) = 0.0_wp ! nzt is not a prognostic level (but cf. pres)
214	!$acc end kernels
215	ENDIF
216
217	!
218	!-- Temperature at bottom boundary.
219	!-- In case of coupled runs (ibc_pt_b = 2) the temperature is given by
220	!-- the sea surface temperature of the coupled ocean model.
221	IF ( ibc_pt_b == 0 ) THEN
222	!$acc kernels present( nzb_s_inner, pt, pt_p )
223	!$acc loop independent
224	DO i = nxlg, nxrg
225	!$acc loop independent
226	DO j = nysg, nyng
227	pt_p(nzb_s_inner(j,i),j,i) = pt(nzb_s_inner(j,i),j,i)
228	ENDDO
229	ENDDO
230	!$acc end kernels
231	ELSEIF ( ibc_pt_b == 1 ) THEN
232	!$acc kernels present( nzb_s_inner, pt_p )
233	!$acc loop independent
234	DO i = nxlg, nxrg
235	!$acc loop independent
236	DO j = nysg, nyng
237	pt_p(nzb_s_inner(j,i),j,i) = pt_p(nzb_s_inner(j,i)+1,j,i)
238	ENDDO
239	ENDDO
240	!$acc end kernels
241	ENDIF
242
243	!
244	!-- Temperature at top boundary
245	IF ( ibc_pt_t == 0 ) THEN
246	!$acc kernels present( pt, pt_p )
247	pt_p(nzt+1,:,:) = pt(nzt+1,:,:)
248	!
249	!-- In case of nudging adjust top boundary to pt which is
250	!-- read in from NUDGING-DATA
251	IF ( nudging ) THEN
252	pt_p(nzt+1,:,:) = pt_init(nzt+1)
253	ENDIF
254	!$acc end kernels
255	ELSEIF ( ibc_pt_t == 1 ) THEN
256	!$acc kernels present( pt_p )
257	pt_p(nzt+1,:,:) = pt_p(nzt,:,:)
258	!$acc end kernels
259	ELSEIF ( ibc_pt_t == 2 ) THEN
260	!$acc kernels present( dzu, pt_p )
261	pt_p(nzt+1,:,:) = pt_p(nzt,:,:) + bc_pt_t_val * dzu(nzt+1)
262	!$acc end kernels
263	ENDIF
264
265	!
266	!-- Boundary conditions for TKE
267	!-- Generally Neumann conditions with de/dz=0 are assumed
268	IF ( .NOT. constant_diffusion ) THEN
269	!$acc kernels present( e_p, nzb_s_inner )
270	!$acc loop independent
271	DO i = nxlg, nxrg
272	!$acc loop independent
273	DO j = nysg, nyng
274	e_p(nzb_s_inner(j,i),j,i) = e_p(nzb_s_inner(j,i)+1,j,i)
275	ENDDO
276	ENDDO
277	IF ( .NOT. nest_domain ) THEN
278	e_p(nzt+1,:,:) = e_p(nzt,:,:)
279	ENDIF
280	!$acc end kernels
281	ENDIF
282
283	!
284	!-- Boundary conditions for salinity
285	IF ( ocean ) THEN
286	!
287	!-- Bottom boundary: Neumann condition because salinity flux is always
288	!-- given
289	DO i = nxlg, nxrg
290	DO j = nysg, nyng
291	sa_p(nzb_s_inner(j,i),j,i) = sa_p(nzb_s_inner(j,i)+1,j,i)
292	ENDDO
293	ENDDO
294
295	!
296	!-- Top boundary: Dirichlet or Neumann
297	IF ( ibc_sa_t == 0 ) THEN
298	sa_p(nzt+1,:,:) = sa(nzt+1,:,:)
299	ELSEIF ( ibc_sa_t == 1 ) THEN
300	sa_p(nzt+1,:,:) = sa_p(nzt,:,:)
301	ENDIF
302
303	ENDIF
304
305	!
306	!-- Boundary conditions for total water content,
307	!-- bottom and top boundary (see also temperature)
308	IF ( humidity ) THEN
309	!
310	!-- Surface conditions for constant_humidity_flux
311	IF ( ibc_q_b == 0 ) THEN
312	DO i = nxlg, nxrg
313	DO j = nysg, nyng
314	q_p(nzb_s_inner(j,i),j,i) = q(nzb_s_inner(j,i),j,i)
315	ENDDO
316	ENDDO
317	ELSE
318	DO i = nxlg, nxrg
319	DO j = nysg, nyng
320	q_p(nzb_s_inner(j,i),j,i) = q_p(nzb_s_inner(j,i)+1,j,i)
321	ENDDO
322	ENDDO
323	ENDIF
324	!
325	!-- Top boundary
326	IF ( ibc_q_t == 0 ) THEN
327	q_p(nzt+1,:,:) = q(nzt+1,:,:)
328	ELSEIF ( ibc_q_t == 1 ) THEN
329	q_p(nzt+1,:,:) = q_p(nzt,:,:) + bc_q_t_val * dzu(nzt+1)
330	ENDIF
331
332	IF ( cloud_physics .AND. microphysics_seifert ) THEN
333	!
334	!-- Surface conditions rain water (Dirichlet)
335	DO i = nxlg, nxrg
336	DO j = nysg, nyng
337	qr_p(nzb_s_inner(j,i),j,i) = 0.0_wp
338	nr_p(nzb_s_inner(j,i),j,i) = 0.0_wp
339	ENDDO
340	ENDDO
341	!
342	!-- Top boundary condition for rain water (Dirichlet)
343	qr_p(nzt+1,:,:) = 0.0_wp
344	nr_p(nzt+1,:,:) = 0.0_wp
345
346	ENDIF
347	ENDIF
348	!
349	!-- Boundary conditions for scalar,
350	!-- bottom and top boundary (see also temperature)
351	IF ( passive_scalar ) THEN
352	!
353	!-- Surface conditions for constant_humidity_flux
354	IF ( ibc_s_b == 0 ) THEN
355	DO i = nxlg, nxrg
356	DO j = nysg, nyng
357	s_p(nzb_s_inner(j,i),j,i) = s(nzb_s_inner(j,i),j,i)
358	ENDDO
359	ENDDO
360	ELSE
361	DO i = nxlg, nxrg
362	DO j = nysg, nyng
363	s_p(nzb_s_inner(j,i),j,i) = s_p(nzb_s_inner(j,i)+1,j,i)
364	ENDDO
365	ENDDO
366	ENDIF
367	!
368	!-- Top boundary condition
369	IF ( ibc_s_t == 0 ) THEN
370	s_p(nzt+1,:,:) = s(nzt+1,:,:)
371	ELSEIF ( ibc_s_t == 1 ) THEN
372	s_p(nzt+1,:,:) = s_p(nzt,:,:)
373	ELSEIF ( ibc_s_t == 2 ) THEN
374	s_p(nzt+1,:,:) = s_p(nzt,:,:) + bc_s_t_val * dzu(nzt+1)
375	ENDIF
376
377	ENDIF
378	!
379	!-- In case of inflow or nest boundary at the south boundary the boundary for v
380	!-- is at nys and in case of inflow or nest boundary at the left boundary the
381	!-- boundary for u is at nxl. Since in prognostic_equations (cache optimized
382	!-- version) these levels are handled as a prognostic level, boundary values
383	!-- have to be restored here.
384	!-- For the SGS-TKE, Neumann boundary conditions are used at the inflow.
385	IF ( inflow_s ) THEN
386	v_p(:,nys,:) = v_p(:,nys-1,:)
387	IF ( .NOT. constant_diffusion ) e_p(:,nys-1,:) = e_p(:,nys,:)
388	ELSEIF ( inflow_n ) THEN
389	IF ( .NOT. constant_diffusion ) e_p(:,nyn+1,:) = e_p(:,nyn,:)
390	ELSEIF ( inflow_l ) THEN
391	u_p(:,:,nxl) = u_p(:,:,nxl-1)
392	IF ( .NOT. constant_diffusion ) e_p(:,:,nxl-1) = e_p(:,:,nxl)
393	ELSEIF ( inflow_r ) THEN
394	IF ( .NOT. constant_diffusion ) e_p(:,:,nxr+1) = e_p(:,:,nxr)
395	ENDIF
396
397	!
398	!-- The same restoration for u at i=nxl and v at j=nys as above must be made
399	!-- in case of nest boundaries. This must not be done in case of vertical nesting
400	!-- mode as in that case the lateral boundaries are actually cyclic.
401	IF ( nesting_mode /= 'vertical' ) THEN
402	IF ( nest_bound_s ) THEN
403	v_p(:,nys,:) = v_p(:,nys-1,:)
404	ENDIF
405	IF ( nest_bound_l ) THEN
406	u_p(:,:,nxl) = u_p(:,:,nxl-1)
407	ENDIF
408	ENDIF
409
410	!
411	!-- Lateral boundary conditions for scalar quantities at the outflow
412	IF ( outflow_s ) THEN
413	pt_p(:,nys-1,:) = pt_p(:,nys,:)
414	IF ( .NOT. constant_diffusion ) e_p(:,nys-1,:) = e_p(:,nys,:)
415	IF ( humidity ) THEN
416	q_p(:,nys-1,:) = q_p(:,nys,:)
417	IF ( cloud_physics .AND. microphysics_seifert ) THEN
418	qr_p(:,nys-1,:) = qr_p(:,nys,:)
419	nr_p(:,nys-1,:) = nr_p(:,nys,:)
420	ENDIF
421	ENDIF
422	IF ( passive_scalar ) s_p(:,nys-1,:) = s_p(:,nys,:)
423	ELSEIF ( outflow_n ) THEN
424	pt_p(:,nyn+1,:) = pt_p(:,nyn,:)
425	IF ( .NOT. constant_diffusion ) e_p(:,nyn+1,:) = e_p(:,nyn,:)
426	IF ( humidity ) THEN
427	q_p(:,nyn+1,:) = q_p(:,nyn,:)
428	IF ( cloud_physics .AND. microphysics_seifert ) THEN
429	qr_p(:,nyn+1,:) = qr_p(:,nyn,:)
430	nr_p(:,nyn+1,:) = nr_p(:,nyn,:)
431	ENDIF
432	ENDIF
433	IF ( passive_scalar ) s_p(:,nyn+1,:) = s_p(:,nyn,:)
434	ELSEIF ( outflow_l ) THEN
435	pt_p(:,:,nxl-1) = pt_p(:,:,nxl)
436	IF ( .NOT. constant_diffusion ) e_p(:,:,nxl-1) = e_p(:,:,nxl)
437	IF ( humidity ) THEN
438	q_p(:,:,nxl-1) = q_p(:,:,nxl)
439	IF ( cloud_physics .AND. microphysics_seifert ) THEN
440	qr_p(:,:,nxl-1) = qr_p(:,:,nxl)
441	nr_p(:,:,nxl-1) = nr_p(:,:,nxl)
442	ENDIF
443	ENDIF
444	IF ( passive_scalar ) s_p(:,:,nxl-1) = s_p(:,:,nxl)
445	ELSEIF ( outflow_r ) THEN
446	pt_p(:,:,nxr+1) = pt_p(:,:,nxr)
447	IF ( .NOT. constant_diffusion ) e_p(:,:,nxr+1) = e_p(:,:,nxr)
448	IF ( humidity ) THEN
449	q_p(:,:,nxr+1) = q_p(:,:,nxr)
450	IF ( cloud_physics .AND. microphysics_seifert ) THEN
451	qr_p(:,:,nxr+1) = qr_p(:,:,nxr)
452	nr_p(:,:,nxr+1) = nr_p(:,:,nxr)
453	ENDIF
454	ENDIF
455	IF ( passive_scalar ) s_p(:,:,nxr+1) = s_p(:,:,nxr)
456	ENDIF
457
458	!
459	!-- Radiation boundary conditions for the velocities at the respective outflow.
460	!-- The phase velocity is either assumed to the maximum phase velocity that
461	!-- ensures numerical stability (CFL-condition) or calculated after
462	!-- Orlanski(1976) and averaged along the outflow boundary.
463	IF ( outflow_s ) THEN
464
465	IF ( use_cmax ) THEN
466	u_p(:,-1,:) = u(:,0,:)
467	v_p(:,0,:) = v(:,1,:)
468	w_p(:,-1,:) = w(:,0,:)
469	ELSEIF ( .NOT. use_cmax ) THEN
470
471	c_max = dy / dt_3d
472
473	c_u_m_l = 0.0_wp
474	c_v_m_l = 0.0_wp
475	c_w_m_l = 0.0_wp
476
477	c_u_m = 0.0_wp
478	c_v_m = 0.0_wp
479	c_w_m = 0.0_wp
480
481	!
482	!-- Calculate the phase speeds for u, v, and w, first local and then
483	!-- average along the outflow boundary.
484	DO k = nzb+1, nzt+1
485	DO i = nxl, nxr
486
487	denom = u_m_s(k,0,i) - u_m_s(k,1,i)
488
489	IF ( denom /= 0.0_wp ) THEN
490	c_u(k,i) = -c_max * ( u(k,0,i) - u_m_s(k,0,i) ) / ( denom * tsc(2) )
491	IF ( c_u(k,i) < 0.0_wp ) THEN
492	c_u(k,i) = 0.0_wp
493	ELSEIF ( c_u(k,i) > c_max ) THEN
494	c_u(k,i) = c_max
495	ENDIF
496	ELSE
497	c_u(k,i) = c_max
498	ENDIF
499
500	denom = v_m_s(k,1,i) - v_m_s(k,2,i)
501
502	IF ( denom /= 0.0_wp ) THEN
503	c_v(k,i) = -c_max * ( v(k,1,i) - v_m_s(k,1,i) ) / ( denom * tsc(2) )
504	IF ( c_v(k,i) < 0.0_wp ) THEN
505	c_v(k,i) = 0.0_wp
506	ELSEIF ( c_v(k,i) > c_max ) THEN
507	c_v(k,i) = c_max
508	ENDIF
509	ELSE
510	c_v(k,i) = c_max
511	ENDIF
512
513	denom = w_m_s(k,0,i) - w_m_s(k,1,i)
514
515	IF ( denom /= 0.0_wp ) THEN
516	c_w(k,i) = -c_max * ( w(k,0,i) - w_m_s(k,0,i) ) / ( denom * tsc(2) )
517	IF ( c_w(k,i) < 0.0_wp ) THEN
518	c_w(k,i) = 0.0_wp
519	ELSEIF ( c_w(k,i) > c_max ) THEN
520	c_w(k,i) = c_max
521	ENDIF
522	ELSE
523	c_w(k,i) = c_max
524	ENDIF
525
526	c_u_m_l(k) = c_u_m_l(k) + c_u(k,i)
527	c_v_m_l(k) = c_v_m_l(k) + c_v(k,i)
528	c_w_m_l(k) = c_w_m_l(k) + c_w(k,i)
529
530	ENDDO
531	ENDDO
532
533	#if defined( __parallel )
534	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
535	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
536	MPI_SUM, comm1dx, ierr )
537	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
538	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
539	MPI_SUM, comm1dx, ierr )
540	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
541	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
542	MPI_SUM, comm1dx, ierr )
543	#else
544	c_u_m = c_u_m_l
545	c_v_m = c_v_m_l
546	c_w_m = c_w_m_l
547	#endif
548
549	c_u_m = c_u_m / (nx+1)
550	c_v_m = c_v_m / (nx+1)
551	c_w_m = c_w_m / (nx+1)
552
553	!
554	!-- Save old timelevels for the next timestep
555	IF ( intermediate_timestep_count == 1 ) THEN
556	u_m_s(:,:,:) = u(:,0:1,:)
557	v_m_s(:,:,:) = v(:,1:2,:)
558	w_m_s(:,:,:) = w(:,0:1,:)
559	ENDIF
560
561	!
562	!-- Calculate the new velocities
563	DO k = nzb+1, nzt+1
564	DO i = nxlg, nxrg
565	u_p(k,-1,i) = u(k,-1,i) - dt_3d * tsc(2) * c_u_m(k) * &
566	( u(k,-1,i) - u(k,0,i) ) * ddy
567
568	v_p(k,0,i) = v(k,0,i) - dt_3d * tsc(2) * c_v_m(k) * &
569	( v(k,0,i) - v(k,1,i) ) * ddy
570
571	w_p(k,-1,i) = w(k,-1,i) - dt_3d * tsc(2) * c_w_m(k) * &
572	( w(k,-1,i) - w(k,0,i) ) * ddy
573	ENDDO
574	ENDDO
575
576	!
577	!-- Bottom boundary at the outflow
578	IF ( ibc_uv_b == 0 ) THEN
579	u_p(nzb,-1,:) = 0.0_wp
580	v_p(nzb,0,:) = 0.0_wp
581	ELSE
582	u_p(nzb,-1,:) = u_p(nzb+1,-1,:)
583	v_p(nzb,0,:) = v_p(nzb+1,0,:)
584	ENDIF
585	w_p(nzb,-1,:) = 0.0_wp
586
587	!
588	!-- Top boundary at the outflow
589	IF ( ibc_uv_t == 0 ) THEN
590	u_p(nzt+1,-1,:) = u_init(nzt+1)
591	v_p(nzt+1,0,:) = v_init(nzt+1)
592	ELSE
593	u_p(nzt+1,-1,:) = u_p(nzt,-1,:)
594	v_p(nzt+1,0,:) = v_p(nzt,0,:)
595	ENDIF
596	w_p(nzt:nzt+1,-1,:) = 0.0_wp
597
598	ENDIF
599
600	ENDIF
601
602	IF ( outflow_n ) THEN
603
604	IF ( use_cmax ) THEN
605	u_p(:,ny+1,:) = u(:,ny,:)
606	v_p(:,ny+1,:) = v(:,ny,:)
607	w_p(:,ny+1,:) = w(:,ny,:)
608	ELSEIF ( .NOT. use_cmax ) THEN
609
610	c_max = dy / dt_3d
611
612	c_u_m_l = 0.0_wp
613	c_v_m_l = 0.0_wp
614	c_w_m_l = 0.0_wp
615
616	c_u_m = 0.0_wp
617	c_v_m = 0.0_wp
618	c_w_m = 0.0_wp
619
620	!
621	!-- Calculate the phase speeds for u, v, and w, first local and then
622	!-- average along the outflow boundary.
623	DO k = nzb+1, nzt+1
624	DO i = nxl, nxr
625
626	denom = u_m_n(k,ny,i) - u_m_n(k,ny-1,i)
627
628	IF ( denom /= 0.0_wp ) THEN
629	c_u(k,i) = -c_max * ( u(k,ny,i) - u_m_n(k,ny,i) ) / ( denom * tsc(2) )
630	IF ( c_u(k,i) < 0.0_wp ) THEN
631	c_u(k,i) = 0.0_wp
632	ELSEIF ( c_u(k,i) > c_max ) THEN
633	c_u(k,i) = c_max
634	ENDIF
635	ELSE
636	c_u(k,i) = c_max
637	ENDIF
638
639	denom = v_m_n(k,ny,i) - v_m_n(k,ny-1,i)
640
641	IF ( denom /= 0.0_wp ) THEN
642	c_v(k,i) = -c_max * ( v(k,ny,i) - v_m_n(k,ny,i) ) / ( denom * tsc(2) )
643	IF ( c_v(k,i) < 0.0_wp ) THEN
644	c_v(k,i) = 0.0_wp
645	ELSEIF ( c_v(k,i) > c_max ) THEN
646	c_v(k,i) = c_max
647	ENDIF
648	ELSE
649	c_v(k,i) = c_max
650	ENDIF
651
652	denom = w_m_n(k,ny,i) - w_m_n(k,ny-1,i)
653
654	IF ( denom /= 0.0_wp ) THEN
655	c_w(k,i) = -c_max * ( w(k,ny,i) - w_m_n(k,ny,i) ) / ( denom * tsc(2) )
656	IF ( c_w(k,i) < 0.0_wp ) THEN
657	c_w(k,i) = 0.0_wp
658	ELSEIF ( c_w(k,i) > c_max ) THEN
659	c_w(k,i) = c_max
660	ENDIF
661	ELSE
662	c_w(k,i) = c_max
663	ENDIF
664
665	c_u_m_l(k) = c_u_m_l(k) + c_u(k,i)
666	c_v_m_l(k) = c_v_m_l(k) + c_v(k,i)
667	c_w_m_l(k) = c_w_m_l(k) + c_w(k,i)
668
669	ENDDO
670	ENDDO
671
672	#if defined( __parallel )
673	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
674	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
675	MPI_SUM, comm1dx, ierr )
676	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
677	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
678	MPI_SUM, comm1dx, ierr )
679	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
680	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
681	MPI_SUM, comm1dx, ierr )
682	#else
683	c_u_m = c_u_m_l
684	c_v_m = c_v_m_l
685	c_w_m = c_w_m_l
686	#endif
687
688	c_u_m = c_u_m / (nx+1)
689	c_v_m = c_v_m / (nx+1)
690	c_w_m = c_w_m / (nx+1)
691
692	!
693	!-- Save old timelevels for the next timestep
694	IF ( intermediate_timestep_count == 1 ) THEN
695	u_m_n(:,:,:) = u(:,ny-1:ny,:)
696	v_m_n(:,:,:) = v(:,ny-1:ny,:)
697	w_m_n(:,:,:) = w(:,ny-1:ny,:)
698	ENDIF
699
700	!
701	!-- Calculate the new velocities
702	DO k = nzb+1, nzt+1
703	DO i = nxlg, nxrg
704	u_p(k,ny+1,i) = u(k,ny+1,i) - dt_3d * tsc(2) * c_u_m(k) * &
705	( u(k,ny+1,i) - u(k,ny,i) ) * ddy
706
707	v_p(k,ny+1,i) = v(k,ny+1,i) - dt_3d * tsc(2) * c_v_m(k) * &
708	( v(k,ny+1,i) - v(k,ny,i) ) * ddy
709
710	w_p(k,ny+1,i) = w(k,ny+1,i) - dt_3d * tsc(2) * c_w_m(k) * &
711	( w(k,ny+1,i) - w(k,ny,i) ) * ddy
712	ENDDO
713	ENDDO
714
715	!
716	!-- Bottom boundary at the outflow
717	IF ( ibc_uv_b == 0 ) THEN
718	u_p(nzb,ny+1,:) = 0.0_wp
719	v_p(nzb,ny+1,:) = 0.0_wp
720	ELSE
721	u_p(nzb,ny+1,:) = u_p(nzb+1,ny+1,:)
722	v_p(nzb,ny+1,:) = v_p(nzb+1,ny+1,:)
723	ENDIF
724	w_p(nzb,ny+1,:) = 0.0_wp
725
726	!
727	!-- Top boundary at the outflow
728	IF ( ibc_uv_t == 0 ) THEN
729	u_p(nzt+1,ny+1,:) = u_init(nzt+1)
730	v_p(nzt+1,ny+1,:) = v_init(nzt+1)
731	ELSE
732	u_p(nzt+1,ny+1,:) = u_p(nzt,nyn+1,:)
733	v_p(nzt+1,ny+1,:) = v_p(nzt,nyn+1,:)
734	ENDIF
735	w_p(nzt:nzt+1,ny+1,:) = 0.0_wp
736
737	ENDIF
738
739	ENDIF
740
741	IF ( outflow_l ) THEN
742
743	IF ( use_cmax ) THEN
744	u_p(:,:,0) = u(:,:,1)
745	v_p(:,:,-1) = v(:,:,0)
746	w_p(:,:,-1) = w(:,:,0)
747	ELSEIF ( .NOT. use_cmax ) THEN
748
749	c_max = dx / dt_3d
750
751	c_u_m_l = 0.0_wp
752	c_v_m_l = 0.0_wp
753	c_w_m_l = 0.0_wp
754
755	c_u_m = 0.0_wp
756	c_v_m = 0.0_wp
757	c_w_m = 0.0_wp
758
759	!
760	!-- Calculate the phase speeds for u, v, and w, first local and then
761	!-- average along the outflow boundary.
762	DO k = nzb+1, nzt+1
763	DO j = nys, nyn
764
765	denom = u_m_l(k,j,1) - u_m_l(k,j,2)
766
767	IF ( denom /= 0.0_wp ) THEN
768	c_u(k,j) = -c_max * ( u(k,j,1) - u_m_l(k,j,1) ) / ( denom * tsc(2) )
769	IF ( c_u(k,j) < 0.0_wp ) THEN
770	c_u(k,j) = 0.0_wp
771	ELSEIF ( c_u(k,j) > c_max ) THEN
772	c_u(k,j) = c_max
773	ENDIF
774	ELSE
775	c_u(k,j) = c_max
776	ENDIF
777
778	denom = v_m_l(k,j,0) - v_m_l(k,j,1)
779
780	IF ( denom /= 0.0_wp ) THEN
781	c_v(k,j) = -c_max * ( v(k,j,0) - v_m_l(k,j,0) ) / ( denom * tsc(2) )
782	IF ( c_v(k,j) < 0.0_wp ) THEN
783	c_v(k,j) = 0.0_wp
784	ELSEIF ( c_v(k,j) > c_max ) THEN
785	c_v(k,j) = c_max
786	ENDIF
787	ELSE
788	c_v(k,j) = c_max
789	ENDIF
790
791	denom = w_m_l(k,j,0) - w_m_l(k,j,1)
792
793	IF ( denom /= 0.0_wp ) THEN
794	c_w(k,j) = -c_max * ( w(k,j,0) - w_m_l(k,j,0) ) / ( denom * tsc(2) )
795	IF ( c_w(k,j) < 0.0_wp ) THEN
796	c_w(k,j) = 0.0_wp
797	ELSEIF ( c_w(k,j) > c_max ) THEN
798	c_w(k,j) = c_max
799	ENDIF
800	ELSE
801	c_w(k,j) = c_max
802	ENDIF
803
804	c_u_m_l(k) = c_u_m_l(k) + c_u(k,j)
805	c_v_m_l(k) = c_v_m_l(k) + c_v(k,j)
806	c_w_m_l(k) = c_w_m_l(k) + c_w(k,j)
807
808	ENDDO
809	ENDDO
810
811	#if defined( __parallel )
812	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
813	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
814	MPI_SUM, comm1dy, ierr )
815	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
816	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
817	MPI_SUM, comm1dy, ierr )
818	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
819	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
820	MPI_SUM, comm1dy, ierr )
821	#else
822	c_u_m = c_u_m_l
823	c_v_m = c_v_m_l
824	c_w_m = c_w_m_l
825	#endif
826
827	c_u_m = c_u_m / (ny+1)
828	c_v_m = c_v_m / (ny+1)
829	c_w_m = c_w_m / (ny+1)
830
831	!
832	!-- Save old timelevels for the next timestep
833	IF ( intermediate_timestep_count == 1 ) THEN
834	u_m_l(:,:,:) = u(:,:,1:2)
835	v_m_l(:,:,:) = v(:,:,0:1)
836	w_m_l(:,:,:) = w(:,:,0:1)
837	ENDIF
838
839	!
840	!-- Calculate the new velocities
841	DO k = nzb+1, nzt+1
842	DO j = nysg, nyng
843	u_p(k,j,0) = u(k,j,0) - dt_3d * tsc(2) * c_u_m(k) * &
844	( u(k,j,0) - u(k,j,1) ) * ddx
845
846	v_p(k,j,-1) = v(k,j,-1) - dt_3d * tsc(2) * c_v_m(k) * &
847	( v(k,j,-1) - v(k,j,0) ) * ddx
848
849	w_p(k,j,-1) = w(k,j,-1) - dt_3d * tsc(2) * c_w_m(k) * &
850	( w(k,j,-1) - w(k,j,0) ) * ddx
851	ENDDO
852	ENDDO
853
854	!
855	!-- Bottom boundary at the outflow
856	IF ( ibc_uv_b == 0 ) THEN
857	u_p(nzb,:,0) = 0.0_wp
858	v_p(nzb,:,-1) = 0.0_wp
859	ELSE
860	u_p(nzb,:,0) = u_p(nzb+1,:,0)
861	v_p(nzb,:,-1) = v_p(nzb+1,:,-1)
862	ENDIF
863	w_p(nzb,:,-1) = 0.0_wp
864
865	!
866	!-- Top boundary at the outflow
867	IF ( ibc_uv_t == 0 ) THEN
868	u_p(nzt+1,:,0) = u_init(nzt+1)
869	v_p(nzt+1,:,-1) = v_init(nzt+1)
870	ELSE
871	u_p(nzt+1,:,0) = u_p(nzt,:,0)
872	v_p(nzt+1,:,-1) = v_p(nzt,:,-1)
873	ENDIF
874	w_p(nzt:nzt+1,:,-1) = 0.0_wp
875
876	ENDIF
877
878	ENDIF
879
880	IF ( outflow_r ) THEN
881
882	IF ( use_cmax ) THEN
883	u_p(:,:,nx+1) = u(:,:,nx)
884	v_p(:,:,nx+1) = v(:,:,nx)
885	w_p(:,:,nx+1) = w(:,:,nx)
886	ELSEIF ( .NOT. use_cmax ) THEN
887
888	c_max = dx / dt_3d
889
890	c_u_m_l = 0.0_wp
891	c_v_m_l = 0.0_wp
892	c_w_m_l = 0.0_wp
893
894	c_u_m = 0.0_wp
895	c_v_m = 0.0_wp
896	c_w_m = 0.0_wp
897
898	!
899	!-- Calculate the phase speeds for u, v, and w, first local and then
900	!-- average along the outflow boundary.
901	DO k = nzb+1, nzt+1
902	DO j = nys, nyn
903
904	denom = u_m_r(k,j,nx) - u_m_r(k,j,nx-1)
905
906	IF ( denom /= 0.0_wp ) THEN
907	c_u(k,j) = -c_max * ( u(k,j,nx) - u_m_r(k,j,nx) ) / ( denom * tsc(2) )
908	IF ( c_u(k,j) < 0.0_wp ) THEN
909	c_u(k,j) = 0.0_wp
910	ELSEIF ( c_u(k,j) > c_max ) THEN
911	c_u(k,j) = c_max
912	ENDIF
913	ELSE
914	c_u(k,j) = c_max
915	ENDIF
916
917	denom = v_m_r(k,j,nx) - v_m_r(k,j,nx-1)
918
919	IF ( denom /= 0.0_wp ) THEN
920	c_v(k,j) = -c_max * ( v(k,j,nx) - v_m_r(k,j,nx) ) / ( denom * tsc(2) )
921	IF ( c_v(k,j) < 0.0_wp ) THEN
922	c_v(k,j) = 0.0_wp
923	ELSEIF ( c_v(k,j) > c_max ) THEN
924	c_v(k,j) = c_max
925	ENDIF
926	ELSE
927	c_v(k,j) = c_max
928	ENDIF
929
930	denom = w_m_r(k,j,nx) - w_m_r(k,j,nx-1)
931
932	IF ( denom /= 0.0_wp ) THEN
933	c_w(k,j) = -c_max * ( w(k,j,nx) - w_m_r(k,j,nx) ) / ( denom * tsc(2) )
934	IF ( c_w(k,j) < 0.0_wp ) THEN
935	c_w(k,j) = 0.0_wp
936	ELSEIF ( c_w(k,j) > c_max ) THEN
937	c_w(k,j) = c_max
938	ENDIF
939	ELSE
940	c_w(k,j) = c_max
941	ENDIF
942
943	c_u_m_l(k) = c_u_m_l(k) + c_u(k,j)
944	c_v_m_l(k) = c_v_m_l(k) + c_v(k,j)
945	c_w_m_l(k) = c_w_m_l(k) + c_w(k,j)
946
947	ENDDO
948	ENDDO
949
950	#if defined( __parallel )
951	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
952	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
953	MPI_SUM, comm1dy, ierr )
954	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
955	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
956	MPI_SUM, comm1dy, ierr )
957	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
958	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
959	MPI_SUM, comm1dy, ierr )
960	#else
961	c_u_m = c_u_m_l
962	c_v_m = c_v_m_l
963	c_w_m = c_w_m_l
964	#endif
965
966	c_u_m = c_u_m / (ny+1)
967	c_v_m = c_v_m / (ny+1)
968	c_w_m = c_w_m / (ny+1)
969
970	!
971	!-- Save old timelevels for the next timestep
972	IF ( intermediate_timestep_count == 1 ) THEN
973	u_m_r(:,:,:) = u(:,:,nx-1:nx)
974	v_m_r(:,:,:) = v(:,:,nx-1:nx)
975	w_m_r(:,:,:) = w(:,:,nx-1:nx)
976	ENDIF
977
978	!
979	!-- Calculate the new velocities
980	DO k = nzb+1, nzt+1
981	DO j = nysg, nyng
982	u_p(k,j,nx+1) = u(k,j,nx+1) - dt_3d * tsc(2) * c_u_m(k) * &
983	( u(k,j,nx+1) - u(k,j,nx) ) * ddx
984
985	v_p(k,j,nx+1) = v(k,j,nx+1) - dt_3d * tsc(2) * c_v_m(k) * &
986	( v(k,j,nx+1) - v(k,j,nx) ) * ddx
987
988	w_p(k,j,nx+1) = w(k,j,nx+1) - dt_3d * tsc(2) * c_w_m(k) * &
989	( w(k,j,nx+1) - w(k,j,nx) ) * ddx
990	ENDDO
991	ENDDO
992
993	!
994	!-- Bottom boundary at the outflow
995	IF ( ibc_uv_b == 0 ) THEN
996	u_p(nzb,:,nx+1) = 0.0_wp
997	v_p(nzb,:,nx+1) = 0.0_wp
998	ELSE
999	u_p(nzb,:,nx+1) = u_p(nzb+1,:,nx+1)
1000	v_p(nzb,:,nx+1) = v_p(nzb+1,:,nx+1)
1001	ENDIF
1002	w_p(nzb,:,nx+1) = 0.0_wp
1003
1004	!
1005	!-- Top boundary at the outflow
1006	IF ( ibc_uv_t == 0 ) THEN
1007	u_p(nzt+1,:,nx+1) = u_init(nzt+1)
1008	v_p(nzt+1,:,nx+1) = v_init(nzt+1)
1009	ELSE
1010	u_p(nzt+1,:,nx+1) = u_p(nzt,:,nx+1)
1011	v_p(nzt+1,:,nx+1) = v_p(nzt,:,nx+1)
1012	ENDIF
1013	w_p(nzt:nzt+1,:,nx+1) = 0.0_wp
1014
1015	ENDIF
1016
1017	ENDIF
1018
1019	END SUBROUTINE boundary_conds

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

| Impressum | ©Leibniz Universität Hannover |