Home

Context Navigation

source: palm/trunk/SOURCE/boundary_conds.f90 @ 2106

Last change on this file since 2106 was 2101, checked in by suehring, 8 years ago
last commit documented
Property svn:keywords set to `Id`
File size: 33.8 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
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: boundary_conds.f90 2101 2017-01-05 16:42:31Z suehring $
27	!
28	! 2000 2016-08-20 18:09:15Z knoop
29	! Forced header and separation lines into 80 columns
30	!
31	! 1992 2016-08-12 15:14:59Z suehring
32	! Adjustments for top boundary condition for passive scalar
33	!
34	! 1960 2016-07-12 16:34:24Z suehring
35	! Treat humidity and passive scalar separately
36	!
37	! 1823 2016-04-07 08:57:52Z hoffmann
38	! Initial version of purely vertical nesting introduced.
39	!
40	! 1822 2016-04-07 07:49:42Z hoffmann
41	! icloud_scheme removed. microphyisics_seifert added.
42	!
43	! 1764 2016-02-28 12:45:19Z raasch
44	! index bug for u_p at left outflow removed
45	!
46	! 1762 2016-02-25 12:31:13Z hellstea
47	! Introduction of nested domain feature
48	!
49	! 1742 2016-01-13 09:50:06Z raasch
50	! bugfix for outflow Neumann boundary conditions at bottom and top
51	!
52	! 1717 2015-11-11 15:09:47Z raasch
53	! Bugfix: index error in outflow conditions for left boundary
54	!
55	! 1682 2015-10-07 23:56:08Z knoop
56	! Code annotations made doxygen readable
57	!
58	! 1410 2014-05-23 12:16:18Z suehring
59	! Bugfix: set dirichlet boundary condition for passive_scalar at model domain
60	! top
61	!
62	! 1399 2014-05-07 11:16:25Z heinze
63	! Bugfix: set inflow boundary conditions also if no humidity or passive_scalar
64	! is used.
65	!
66	! 1398 2014-05-07 11:15:00Z heinze
67	! Dirichlet-condition at the top for u and v changed to u_init and v_init also
68	! for large_scale_forcing
69	!
70	! 1380 2014-04-28 12:40:45Z heinze
71	! Adjust Dirichlet-condition at the top for pt in case of nudging
72	!
73	! 1361 2014-04-16 15:17:48Z hoffmann
74	! Bottom and top boundary conditions of rain water content (qr) and
75	! rain drop concentration (nr) changed to Dirichlet
76	!
77	! 1353 2014-04-08 15:21:23Z heinze
78	! REAL constants provided with KIND-attribute
79	!
80	! 1320 2014-03-20 08:40:49Z raasch
81	! ONLY-attribute added to USE-statements,
82	! kind-parameters added to all INTEGER and REAL declaration statements,
83	! kinds are defined in new module kinds,
84	! revision history before 2012 removed,
85	! comment fields (!:) to be used for variable explanations added to
86	! all variable declaration statements
87	!
88	! 1257 2013-11-08 15:18:40Z raasch
89	! loop independent clauses added
90	!
91	! 1241 2013-10-30 11:36:58Z heinze
92	! Adjust ug and vg at each timestep in case of large_scale_forcing
93	!
94	! 1159 2013-05-21 11:58:22Z fricke
95	! Bugfix: Neumann boundary conditions for the velocity components at the
96	! outflow are in fact radiation boundary conditions using the maximum phase
97	! velocity that ensures numerical stability (CFL-condition).
98	! Hence, logical operator use_cmax is now used instead of bc_lr_dirneu/_neudir.
99	! Bugfix: In case of use_cmax at the outflow, u, v, w are replaced by
100	! u_p, v_p, w_p
101	!
102	! 1115 2013-03-26 18:16:16Z hoffmann
103	! boundary conditions of two-moment cloud scheme are restricted to Neumann-
104	! boundary-conditions
105	!
106	! 1113 2013-03-10 02:48:14Z raasch
107	! GPU-porting
108	! dummy argument "range" removed
109	! Bugfix: wrong index in loops of radiation boundary condition
110	!
111	! 1053 2012-11-13 17:11:03Z hoffmann
112	! boundary conditions for the two new prognostic equations (nr, qr) of the
113	! two-moment cloud scheme
114	!
115	! 1036 2012-10-22 13:43:42Z raasch
116	! code put under GPL (PALM 3.9)
117	!
118	! 996 2012-09-07 10:41:47Z raasch
119	! little reformatting
120	!
121	! 978 2012-08-09 08:28:32Z fricke
122	! Neumann boudnary conditions are added at the inflow boundary for the SGS-TKE.
123	! Outflow boundary conditions for the velocity components can be set to Neumann
124	! conditions or to radiation conditions with a horizontal averaged phase
125	! velocity.
126	!
127	! 875 2012-04-02 15:35:15Z gryschka
128	! Bugfix in case of dirichlet inflow bc at the right or north boundary
129	!
130	! Revision 1.1 1997/09/12 06:21:34 raasch
131	! Initial revision
132	!
133	!
134	! Description:
135	! ------------
136	!> Boundary conditions for the prognostic quantities.
137	!> One additional bottom boundary condition is applied for the TKE (=(u)*2)
138	!> in prandtl_fluxes. The cyclic lateral boundary conditions are implicitly
139	!> handled in routine exchange_horiz. Pressure boundary conditions are
140	!> explicitly set in routines pres, poisfft, poismg and sor.
141	!------------------------------------------------------------------------------!
142	SUBROUTINE boundary_conds
143
144
145	USE arrays_3d, &
146	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, &
147	dzu, e_p, nr_p, pt, pt_p, q, q_p, qr_p, s, s_p, sa, sa_p, &
148	u, ug, u_init, u_m_l, u_m_n, u_m_r, u_m_s, u_p, &
149	v, vg, v_init, v_m_l, v_m_n, v_m_r, v_m_s, v_p, &
150	w, w_p, w_m_l, w_m_n, w_m_r, w_m_s, pt_init
151
152	USE control_parameters, &
153	ONLY: bc_pt_t_val, bc_q_t_val, bc_s_t_val, constant_diffusion, &
154	cloud_physics, dt_3d, humidity, &
155	ibc_pt_b, ibc_pt_t, ibc_q_b, ibc_q_t, ibc_s_b, ibc_s_t, &
156	ibc_sa_t, ibc_uv_b, ibc_uv_t, inflow_l, inflow_n, inflow_r, &
157	inflow_s, intermediate_timestep_count, large_scale_forcing, &
158	microphysics_seifert, nest_domain, nest_bound_l, nest_bound_s, &
159	nudging, ocean, outflow_l, outflow_n, outflow_r, outflow_s, &
160	passive_scalar, tsc, use_cmax
161
162	USE grid_variables, &
163	ONLY: ddx, ddy, dx, dy
164
165	USE indices, &
166	ONLY: nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, &
167	nzb, nzb_s_inner, nzb_w_inner, nzt
168
169	USE kinds
170
171	USE pegrid
172
173	USE pmc_interface, &
174	ONLY : nesting_mode
175
176
177	IMPLICIT NONE
178
179	INTEGER(iwp) :: i !<
180	INTEGER(iwp) :: j !<
181	INTEGER(iwp) :: k !<
182
183	REAL(wp) :: c_max !<
184	REAL(wp) :: denom !<
185
186
187	!
188	!-- Bottom boundary
189	IF ( ibc_uv_b == 1 ) THEN
190	!$acc kernels present( u_p, v_p )
191	u_p(nzb,:,:) = u_p(nzb+1,:,:)
192	v_p(nzb,:,:) = v_p(nzb+1,:,:)
193	!$acc end kernels
194	ENDIF
195
196	!$acc kernels present( nzb_w_inner, w_p )
197	DO i = nxlg, nxrg
198	DO j = nysg, nyng
199	w_p(nzb_w_inner(j,i),j,i) = 0.0_wp
200	ENDDO
201	ENDDO
202	!$acc end kernels
203
204	!
205	!-- Top boundary. A nested domain ( ibc_uv_t = 3 ) does not require settings.
206	IF ( ibc_uv_t == 0 ) THEN
207	!$acc kernels present( u_init, u_p, v_init, v_p )
208	u_p(nzt+1,:,:) = u_init(nzt+1)
209	v_p(nzt+1,:,:) = v_init(nzt+1)
210	!$acc end kernels
211	ELSEIF ( ibc_uv_t == 1 ) THEN
212	!$acc kernels present( u_p, v_p )
213	u_p(nzt+1,:,:) = u_p(nzt,:,:)
214	v_p(nzt+1,:,:) = v_p(nzt,:,:)
215	!$acc end kernels
216	ENDIF
217
218	IF ( .NOT. nest_domain ) THEN
219	!$acc kernels present( w_p )
220	w_p(nzt:nzt+1,:,:) = 0.0_wp ! nzt is not a prognostic level (but cf. pres)
221	!$acc end kernels
222	ENDIF
223
224	!
225	!-- Temperature at bottom boundary.
226	!-- In case of coupled runs (ibc_pt_b = 2) the temperature is given by
227	!-- the sea surface temperature of the coupled ocean model.
228	IF ( ibc_pt_b == 0 ) THEN
229	!$acc kernels present( nzb_s_inner, pt, pt_p )
230	!$acc loop independent
231	DO i = nxlg, nxrg
232	!$acc loop independent
233	DO j = nysg, nyng
234	pt_p(nzb_s_inner(j,i),j,i) = pt(nzb_s_inner(j,i),j,i)
235	ENDDO
236	ENDDO
237	!$acc end kernels
238	ELSEIF ( ibc_pt_b == 1 ) THEN
239	!$acc kernels present( nzb_s_inner, pt_p )
240	!$acc loop independent
241	DO i = nxlg, nxrg
242	!$acc loop independent
243	DO j = nysg, nyng
244	pt_p(nzb_s_inner(j,i),j,i) = pt_p(nzb_s_inner(j,i)+1,j,i)
245	ENDDO
246	ENDDO
247	!$acc end kernels
248	ENDIF
249
250	!
251	!-- Temperature at top boundary
252	IF ( ibc_pt_t == 0 ) THEN
253	!$acc kernels present( pt, pt_p )
254	pt_p(nzt+1,:,:) = pt(nzt+1,:,:)
255	!
256	!-- In case of nudging adjust top boundary to pt which is
257	!-- read in from NUDGING-DATA
258	IF ( nudging ) THEN
259	pt_p(nzt+1,:,:) = pt_init(nzt+1)
260	ENDIF
261	!$acc end kernels
262	ELSEIF ( ibc_pt_t == 1 ) THEN
263	!$acc kernels present( pt_p )
264	pt_p(nzt+1,:,:) = pt_p(nzt,:,:)
265	!$acc end kernels
266	ELSEIF ( ibc_pt_t == 2 ) THEN
267	!$acc kernels present( dzu, pt_p )
268	pt_p(nzt+1,:,:) = pt_p(nzt,:,:) + bc_pt_t_val * dzu(nzt+1)
269	!$acc end kernels
270	ENDIF
271
272	!
273	!-- Boundary conditions for TKE
274	!-- Generally Neumann conditions with de/dz=0 are assumed
275	IF ( .NOT. constant_diffusion ) THEN
276	!$acc kernels present( e_p, nzb_s_inner )
277	!$acc loop independent
278	DO i = nxlg, nxrg
279	!$acc loop independent
280	DO j = nysg, nyng
281	e_p(nzb_s_inner(j,i),j,i) = e_p(nzb_s_inner(j,i)+1,j,i)
282	ENDDO
283	ENDDO
284	IF ( .NOT. nest_domain ) THEN
285	e_p(nzt+1,:,:) = e_p(nzt,:,:)
286	ENDIF
287	!$acc end kernels
288	ENDIF
289
290	!
291	!-- Boundary conditions for salinity
292	IF ( ocean ) THEN
293	!
294	!-- Bottom boundary: Neumann condition because salinity flux is always
295	!-- given
296	DO i = nxlg, nxrg
297	DO j = nysg, nyng
298	sa_p(nzb_s_inner(j,i),j,i) = sa_p(nzb_s_inner(j,i)+1,j,i)
299	ENDDO
300	ENDDO
301
302	!
303	!-- Top boundary: Dirichlet or Neumann
304	IF ( ibc_sa_t == 0 ) THEN
305	sa_p(nzt+1,:,:) = sa(nzt+1,:,:)
306	ELSEIF ( ibc_sa_t == 1 ) THEN
307	sa_p(nzt+1,:,:) = sa_p(nzt,:,:)
308	ENDIF
309
310	ENDIF
311
312	!
313	!-- Boundary conditions for total water content,
314	!-- bottom and top boundary (see also temperature)
315	IF ( humidity ) THEN
316	!
317	!-- Surface conditions for constant_humidity_flux
318	IF ( ibc_q_b == 0 ) THEN
319	DO i = nxlg, nxrg
320	DO j = nysg, nyng
321	q_p(nzb_s_inner(j,i),j,i) = q(nzb_s_inner(j,i),j,i)
322	ENDDO
323	ENDDO
324	ELSE
325	DO i = nxlg, nxrg
326	DO j = nysg, nyng
327	q_p(nzb_s_inner(j,i),j,i) = q_p(nzb_s_inner(j,i)+1,j,i)
328	ENDDO
329	ENDDO
330	ENDIF
331	!
332	!-- Top boundary
333	IF ( ibc_q_t == 0 ) THEN
334	q_p(nzt+1,:,:) = q(nzt+1,:,:)
335	ELSEIF ( ibc_q_t == 1 ) THEN
336	q_p(nzt+1,:,:) = q_p(nzt,:,:) + bc_q_t_val * dzu(nzt+1)
337	ENDIF
338
339	IF ( cloud_physics .AND. microphysics_seifert ) THEN
340	!
341	!-- Surface conditions rain water (Dirichlet)
342	DO i = nxlg, nxrg
343	DO j = nysg, nyng
344	qr_p(nzb_s_inner(j,i),j,i) = 0.0_wp
345	nr_p(nzb_s_inner(j,i),j,i) = 0.0_wp
346	ENDDO
347	ENDDO
348	!
349	!-- Top boundary condition for rain water (Dirichlet)
350	qr_p(nzt+1,:,:) = 0.0_wp
351	nr_p(nzt+1,:,:) = 0.0_wp
352
353	ENDIF
354	ENDIF
355	!
356	!-- Boundary conditions for scalar,
357	!-- bottom and top boundary (see also temperature)
358	IF ( passive_scalar ) THEN
359	!
360	!-- Surface conditions for constant_humidity_flux
361	IF ( ibc_s_b == 0 ) THEN
362	DO i = nxlg, nxrg
363	DO j = nysg, nyng
364	s_p(nzb_s_inner(j,i),j,i) = s(nzb_s_inner(j,i),j,i)
365	ENDDO
366	ENDDO
367	ELSE
368	DO i = nxlg, nxrg
369	DO j = nysg, nyng
370	s_p(nzb_s_inner(j,i),j,i) = s_p(nzb_s_inner(j,i)+1,j,i)
371	ENDDO
372	ENDDO
373	ENDIF
374	!
375	!-- Top boundary condition
376	IF ( ibc_s_t == 0 ) THEN
377	s_p(nzt+1,:,:) = s(nzt+1,:,:)
378	ELSEIF ( ibc_s_t == 1 ) THEN
379	s_p(nzt+1,:,:) = s_p(nzt,:,:)
380	ELSEIF ( ibc_s_t == 2 ) THEN
381	s_p(nzt+1,:,:) = s_p(nzt,:,:) + bc_s_t_val * dzu(nzt+1)
382	ENDIF
383
384	ENDIF
385	!
386	!-- In case of inflow or nest boundary at the south boundary the boundary for v
387	!-- is at nys and in case of inflow or nest boundary at the left boundary the
388	!-- boundary for u is at nxl. Since in prognostic_equations (cache optimized
389	!-- version) these levels are handled as a prognostic level, boundary values
390	!-- have to be restored here.
391	!-- For the SGS-TKE, Neumann boundary conditions are used at the inflow.
392	IF ( inflow_s ) THEN
393	v_p(:,nys,:) = v_p(:,nys-1,:)
394	IF ( .NOT. constant_diffusion ) e_p(:,nys-1,:) = e_p(:,nys,:)
395	ELSEIF ( inflow_n ) THEN
396	IF ( .NOT. constant_diffusion ) e_p(:,nyn+1,:) = e_p(:,nyn,:)
397	ELSEIF ( inflow_l ) THEN
398	u_p(:,:,nxl) = u_p(:,:,nxl-1)
399	IF ( .NOT. constant_diffusion ) e_p(:,:,nxl-1) = e_p(:,:,nxl)
400	ELSEIF ( inflow_r ) THEN
401	IF ( .NOT. constant_diffusion ) e_p(:,:,nxr+1) = e_p(:,:,nxr)
402	ENDIF
403
404	!
405	!-- The same restoration for u at i=nxl and v at j=nys as above must be made
406	!-- in case of nest boundaries. This must not be done in case of vertical nesting
407	!-- mode as in that case the lateral boundaries are actually cyclic.
408	IF ( nesting_mode /= 'vertical' ) THEN
409	IF ( nest_bound_s ) THEN
410	v_p(:,nys,:) = v_p(:,nys-1,:)
411	ENDIF
412	IF ( nest_bound_l ) THEN
413	u_p(:,:,nxl) = u_p(:,:,nxl-1)
414	ENDIF
415	ENDIF
416
417	!
418	!-- Lateral boundary conditions for scalar quantities at the outflow
419	IF ( outflow_s ) THEN
420	pt_p(:,nys-1,:) = pt_p(:,nys,:)
421	IF ( .NOT. constant_diffusion ) e_p(:,nys-1,:) = e_p(:,nys,:)
422	IF ( humidity ) THEN
423	q_p(:,nys-1,:) = q_p(:,nys,:)
424	IF ( cloud_physics .AND. microphysics_seifert ) THEN
425	qr_p(:,nys-1,:) = qr_p(:,nys,:)
426	nr_p(:,nys-1,:) = nr_p(:,nys,:)
427	ENDIF
428	ENDIF
429	IF ( passive_scalar ) s_p(:,nys-1,:) = s_p(:,nys,:)
430	ELSEIF ( outflow_n ) THEN
431	pt_p(:,nyn+1,:) = pt_p(:,nyn,:)
432	IF ( .NOT. constant_diffusion ) e_p(:,nyn+1,:) = e_p(:,nyn,:)
433	IF ( humidity ) THEN
434	q_p(:,nyn+1,:) = q_p(:,nyn,:)
435	IF ( cloud_physics .AND. microphysics_seifert ) THEN
436	qr_p(:,nyn+1,:) = qr_p(:,nyn,:)
437	nr_p(:,nyn+1,:) = nr_p(:,nyn,:)
438	ENDIF
439	ENDIF
440	IF ( passive_scalar ) s_p(:,nyn+1,:) = s_p(:,nyn,:)
441	ELSEIF ( outflow_l ) THEN
442	pt_p(:,:,nxl-1) = pt_p(:,:,nxl)
443	IF ( .NOT. constant_diffusion ) e_p(:,:,nxl-1) = e_p(:,:,nxl)
444	IF ( humidity ) THEN
445	q_p(:,:,nxl-1) = q_p(:,:,nxl)
446	IF ( cloud_physics .AND. microphysics_seifert ) THEN
447	qr_p(:,:,nxl-1) = qr_p(:,:,nxl)
448	nr_p(:,:,nxl-1) = nr_p(:,:,nxl)
449	ENDIF
450	ENDIF
451	IF ( passive_scalar ) s_p(:,:,nxl-1) = s_p(:,:,nxl)
452	ELSEIF ( outflow_r ) THEN
453	pt_p(:,:,nxr+1) = pt_p(:,:,nxr)
454	IF ( .NOT. constant_diffusion ) e_p(:,:,nxr+1) = e_p(:,:,nxr)
455	IF ( humidity ) THEN
456	q_p(:,:,nxr+1) = q_p(:,:,nxr)
457	IF ( cloud_physics .AND. microphysics_seifert ) THEN
458	qr_p(:,:,nxr+1) = qr_p(:,:,nxr)
459	nr_p(:,:,nxr+1) = nr_p(:,:,nxr)
460	ENDIF
461	ENDIF
462	IF ( passive_scalar ) s_p(:,:,nxr+1) = s_p(:,:,nxr)
463	ENDIF
464
465	!
466	!-- Radiation boundary conditions for the velocities at the respective outflow.
467	!-- The phase velocity is either assumed to the maximum phase velocity that
468	!-- ensures numerical stability (CFL-condition) or calculated after
469	!-- Orlanski(1976) and averaged along the outflow boundary.
470	IF ( outflow_s ) THEN
471
472	IF ( use_cmax ) THEN
473	u_p(:,-1,:) = u(:,0,:)
474	v_p(:,0,:) = v(:,1,:)
475	w_p(:,-1,:) = w(:,0,:)
476	ELSEIF ( .NOT. use_cmax ) THEN
477
478	c_max = dy / dt_3d
479
480	c_u_m_l = 0.0_wp
481	c_v_m_l = 0.0_wp
482	c_w_m_l = 0.0_wp
483
484	c_u_m = 0.0_wp
485	c_v_m = 0.0_wp
486	c_w_m = 0.0_wp
487
488	!
489	!-- Calculate the phase speeds for u, v, and w, first local and then
490	!-- average along the outflow boundary.
491	DO k = nzb+1, nzt+1
492	DO i = nxl, nxr
493
494	denom = u_m_s(k,0,i) - u_m_s(k,1,i)
495
496	IF ( denom /= 0.0_wp ) THEN
497	c_u(k,i) = -c_max * ( u(k,0,i) - u_m_s(k,0,i) ) / ( denom * tsc(2) )
498	IF ( c_u(k,i) < 0.0_wp ) THEN
499	c_u(k,i) = 0.0_wp
500	ELSEIF ( c_u(k,i) > c_max ) THEN
501	c_u(k,i) = c_max
502	ENDIF
503	ELSE
504	c_u(k,i) = c_max
505	ENDIF
506
507	denom = v_m_s(k,1,i) - v_m_s(k,2,i)
508
509	IF ( denom /= 0.0_wp ) THEN
510	c_v(k,i) = -c_max * ( v(k,1,i) - v_m_s(k,1,i) ) / ( denom * tsc(2) )
511	IF ( c_v(k,i) < 0.0_wp ) THEN
512	c_v(k,i) = 0.0_wp
513	ELSEIF ( c_v(k,i) > c_max ) THEN
514	c_v(k,i) = c_max
515	ENDIF
516	ELSE
517	c_v(k,i) = c_max
518	ENDIF
519
520	denom = w_m_s(k,0,i) - w_m_s(k,1,i)
521
522	IF ( denom /= 0.0_wp ) THEN
523	c_w(k,i) = -c_max * ( w(k,0,i) - w_m_s(k,0,i) ) / ( denom * tsc(2) )
524	IF ( c_w(k,i) < 0.0_wp ) THEN
525	c_w(k,i) = 0.0_wp
526	ELSEIF ( c_w(k,i) > c_max ) THEN
527	c_w(k,i) = c_max
528	ENDIF
529	ELSE
530	c_w(k,i) = c_max
531	ENDIF
532
533	c_u_m_l(k) = c_u_m_l(k) + c_u(k,i)
534	c_v_m_l(k) = c_v_m_l(k) + c_v(k,i)
535	c_w_m_l(k) = c_w_m_l(k) + c_w(k,i)
536
537	ENDDO
538	ENDDO
539
540	#if defined( __parallel )
541	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
542	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
543	MPI_SUM, comm1dx, ierr )
544	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
545	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
546	MPI_SUM, comm1dx, ierr )
547	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
548	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
549	MPI_SUM, comm1dx, ierr )
550	#else
551	c_u_m = c_u_m_l
552	c_v_m = c_v_m_l
553	c_w_m = c_w_m_l
554	#endif
555
556	c_u_m = c_u_m / (nx+1)
557	c_v_m = c_v_m / (nx+1)
558	c_w_m = c_w_m / (nx+1)
559
560	!
561	!-- Save old timelevels for the next timestep
562	IF ( intermediate_timestep_count == 1 ) THEN
563	u_m_s(:,:,:) = u(:,0:1,:)
564	v_m_s(:,:,:) = v(:,1:2,:)
565	w_m_s(:,:,:) = w(:,0:1,:)
566	ENDIF
567
568	!
569	!-- Calculate the new velocities
570	DO k = nzb+1, nzt+1
571	DO i = nxlg, nxrg
572	u_p(k,-1,i) = u(k,-1,i) - dt_3d * tsc(2) * c_u_m(k) * &
573	( u(k,-1,i) - u(k,0,i) ) * ddy
574
575	v_p(k,0,i) = v(k,0,i) - dt_3d * tsc(2) * c_v_m(k) * &
576	( v(k,0,i) - v(k,1,i) ) * ddy
577
578	w_p(k,-1,i) = w(k,-1,i) - dt_3d * tsc(2) * c_w_m(k) * &
579	( w(k,-1,i) - w(k,0,i) ) * ddy
580	ENDDO
581	ENDDO
582
583	!
584	!-- Bottom boundary at the outflow
585	IF ( ibc_uv_b == 0 ) THEN
586	u_p(nzb,-1,:) = 0.0_wp
587	v_p(nzb,0,:) = 0.0_wp
588	ELSE
589	u_p(nzb,-1,:) = u_p(nzb+1,-1,:)
590	v_p(nzb,0,:) = v_p(nzb+1,0,:)
591	ENDIF
592	w_p(nzb,-1,:) = 0.0_wp
593
594	!
595	!-- Top boundary at the outflow
596	IF ( ibc_uv_t == 0 ) THEN
597	u_p(nzt+1,-1,:) = u_init(nzt+1)
598	v_p(nzt+1,0,:) = v_init(nzt+1)
599	ELSE
600	u_p(nzt+1,-1,:) = u_p(nzt,-1,:)
601	v_p(nzt+1,0,:) = v_p(nzt,0,:)
602	ENDIF
603	w_p(nzt:nzt+1,-1,:) = 0.0_wp
604
605	ENDIF
606
607	ENDIF
608
609	IF ( outflow_n ) THEN
610
611	IF ( use_cmax ) THEN
612	u_p(:,ny+1,:) = u(:,ny,:)
613	v_p(:,ny+1,:) = v(:,ny,:)
614	w_p(:,ny+1,:) = w(:,ny,:)
615	ELSEIF ( .NOT. use_cmax ) THEN
616
617	c_max = dy / dt_3d
618
619	c_u_m_l = 0.0_wp
620	c_v_m_l = 0.0_wp
621	c_w_m_l = 0.0_wp
622
623	c_u_m = 0.0_wp
624	c_v_m = 0.0_wp
625	c_w_m = 0.0_wp
626
627	!
628	!-- Calculate the phase speeds for u, v, and w, first local and then
629	!-- average along the outflow boundary.
630	DO k = nzb+1, nzt+1
631	DO i = nxl, nxr
632
633	denom = u_m_n(k,ny,i) - u_m_n(k,ny-1,i)
634
635	IF ( denom /= 0.0_wp ) THEN
636	c_u(k,i) = -c_max * ( u(k,ny,i) - u_m_n(k,ny,i) ) / ( denom * tsc(2) )
637	IF ( c_u(k,i) < 0.0_wp ) THEN
638	c_u(k,i) = 0.0_wp
639	ELSEIF ( c_u(k,i) > c_max ) THEN
640	c_u(k,i) = c_max
641	ENDIF
642	ELSE
643	c_u(k,i) = c_max
644	ENDIF
645
646	denom = v_m_n(k,ny,i) - v_m_n(k,ny-1,i)
647
648	IF ( denom /= 0.0_wp ) THEN
649	c_v(k,i) = -c_max * ( v(k,ny,i) - v_m_n(k,ny,i) ) / ( denom * tsc(2) )
650	IF ( c_v(k,i) < 0.0_wp ) THEN
651	c_v(k,i) = 0.0_wp
652	ELSEIF ( c_v(k,i) > c_max ) THEN
653	c_v(k,i) = c_max
654	ENDIF
655	ELSE
656	c_v(k,i) = c_max
657	ENDIF
658
659	denom = w_m_n(k,ny,i) - w_m_n(k,ny-1,i)
660
661	IF ( denom /= 0.0_wp ) THEN
662	c_w(k,i) = -c_max * ( w(k,ny,i) - w_m_n(k,ny,i) ) / ( denom * tsc(2) )
663	IF ( c_w(k,i) < 0.0_wp ) THEN
664	c_w(k,i) = 0.0_wp
665	ELSEIF ( c_w(k,i) > c_max ) THEN
666	c_w(k,i) = c_max
667	ENDIF
668	ELSE
669	c_w(k,i) = c_max
670	ENDIF
671
672	c_u_m_l(k) = c_u_m_l(k) + c_u(k,i)
673	c_v_m_l(k) = c_v_m_l(k) + c_v(k,i)
674	c_w_m_l(k) = c_w_m_l(k) + c_w(k,i)
675
676	ENDDO
677	ENDDO
678
679	#if defined( __parallel )
680	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
681	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
682	MPI_SUM, comm1dx, ierr )
683	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
684	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
685	MPI_SUM, comm1dx, ierr )
686	IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr )
687	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
688	MPI_SUM, comm1dx, ierr )
689	#else
690	c_u_m = c_u_m_l
691	c_v_m = c_v_m_l
692	c_w_m = c_w_m_l
693	#endif
694
695	c_u_m = c_u_m / (nx+1)
696	c_v_m = c_v_m / (nx+1)
697	c_w_m = c_w_m / (nx+1)
698
699	!
700	!-- Save old timelevels for the next timestep
701	IF ( intermediate_timestep_count == 1 ) THEN
702	u_m_n(:,:,:) = u(:,ny-1:ny,:)
703	v_m_n(:,:,:) = v(:,ny-1:ny,:)
704	w_m_n(:,:,:) = w(:,ny-1:ny,:)
705	ENDIF
706
707	!
708	!-- Calculate the new velocities
709	DO k = nzb+1, nzt+1
710	DO i = nxlg, nxrg
711	u_p(k,ny+1,i) = u(k,ny+1,i) - dt_3d * tsc(2) * c_u_m(k) * &
712	( u(k,ny+1,i) - u(k,ny,i) ) * ddy
713
714	v_p(k,ny+1,i) = v(k,ny+1,i) - dt_3d * tsc(2) * c_v_m(k) * &
715	( v(k,ny+1,i) - v(k,ny,i) ) * ddy
716
717	w_p(k,ny+1,i) = w(k,ny+1,i) - dt_3d * tsc(2) * c_w_m(k) * &
718	( w(k,ny+1,i) - w(k,ny,i) ) * ddy
719	ENDDO
720	ENDDO
721
722	!
723	!-- Bottom boundary at the outflow
724	IF ( ibc_uv_b == 0 ) THEN
725	u_p(nzb,ny+1,:) = 0.0_wp
726	v_p(nzb,ny+1,:) = 0.0_wp
727	ELSE
728	u_p(nzb,ny+1,:) = u_p(nzb+1,ny+1,:)
729	v_p(nzb,ny+1,:) = v_p(nzb+1,ny+1,:)
730	ENDIF
731	w_p(nzb,ny+1,:) = 0.0_wp
732
733	!
734	!-- Top boundary at the outflow
735	IF ( ibc_uv_t == 0 ) THEN
736	u_p(nzt+1,ny+1,:) = u_init(nzt+1)
737	v_p(nzt+1,ny+1,:) = v_init(nzt+1)
738	ELSE
739	u_p(nzt+1,ny+1,:) = u_p(nzt,nyn+1,:)
740	v_p(nzt+1,ny+1,:) = v_p(nzt,nyn+1,:)
741	ENDIF
742	w_p(nzt:nzt+1,ny+1,:) = 0.0_wp
743
744	ENDIF
745
746	ENDIF
747
748	IF ( outflow_l ) THEN
749
750	IF ( use_cmax ) THEN
751	u_p(:,:,0) = u(:,:,1)
752	v_p(:,:,-1) = v(:,:,0)
753	w_p(:,:,-1) = w(:,:,0)
754	ELSEIF ( .NOT. use_cmax ) THEN
755
756	c_max = dx / dt_3d
757
758	c_u_m_l = 0.0_wp
759	c_v_m_l = 0.0_wp
760	c_w_m_l = 0.0_wp
761
762	c_u_m = 0.0_wp
763	c_v_m = 0.0_wp
764	c_w_m = 0.0_wp
765
766	!
767	!-- Calculate the phase speeds for u, v, and w, first local and then
768	!-- average along the outflow boundary.
769	DO k = nzb+1, nzt+1
770	DO j = nys, nyn
771
772	denom = u_m_l(k,j,1) - u_m_l(k,j,2)
773
774	IF ( denom /= 0.0_wp ) THEN
775	c_u(k,j) = -c_max * ( u(k,j,1) - u_m_l(k,j,1) ) / ( denom * tsc(2) )
776	IF ( c_u(k,j) < 0.0_wp ) THEN
777	c_u(k,j) = 0.0_wp
778	ELSEIF ( c_u(k,j) > c_max ) THEN
779	c_u(k,j) = c_max
780	ENDIF
781	ELSE
782	c_u(k,j) = c_max
783	ENDIF
784
785	denom = v_m_l(k,j,0) - v_m_l(k,j,1)
786
787	IF ( denom /= 0.0_wp ) THEN
788	c_v(k,j) = -c_max * ( v(k,j,0) - v_m_l(k,j,0) ) / ( denom * tsc(2) )
789	IF ( c_v(k,j) < 0.0_wp ) THEN
790	c_v(k,j) = 0.0_wp
791	ELSEIF ( c_v(k,j) > c_max ) THEN
792	c_v(k,j) = c_max
793	ENDIF
794	ELSE
795	c_v(k,j) = c_max
796	ENDIF
797
798	denom = w_m_l(k,j,0) - w_m_l(k,j,1)
799
800	IF ( denom /= 0.0_wp ) THEN
801	c_w(k,j) = -c_max * ( w(k,j,0) - w_m_l(k,j,0) ) / ( denom * tsc(2) )
802	IF ( c_w(k,j) < 0.0_wp ) THEN
803	c_w(k,j) = 0.0_wp
804	ELSEIF ( c_w(k,j) > c_max ) THEN
805	c_w(k,j) = c_max
806	ENDIF
807	ELSE
808	c_w(k,j) = c_max
809	ENDIF
810
811	c_u_m_l(k) = c_u_m_l(k) + c_u(k,j)
812	c_v_m_l(k) = c_v_m_l(k) + c_v(k,j)
813	c_w_m_l(k) = c_w_m_l(k) + c_w(k,j)
814
815	ENDDO
816	ENDDO
817
818	#if defined( __parallel )
819	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
820	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
821	MPI_SUM, comm1dy, ierr )
822	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
823	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
824	MPI_SUM, comm1dy, ierr )
825	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
826	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
827	MPI_SUM, comm1dy, ierr )
828	#else
829	c_u_m = c_u_m_l
830	c_v_m = c_v_m_l
831	c_w_m = c_w_m_l
832	#endif
833
834	c_u_m = c_u_m / (ny+1)
835	c_v_m = c_v_m / (ny+1)
836	c_w_m = c_w_m / (ny+1)
837
838	!
839	!-- Save old timelevels for the next timestep
840	IF ( intermediate_timestep_count == 1 ) THEN
841	u_m_l(:,:,:) = u(:,:,1:2)
842	v_m_l(:,:,:) = v(:,:,0:1)
843	w_m_l(:,:,:) = w(:,:,0:1)
844	ENDIF
845
846	!
847	!-- Calculate the new velocities
848	DO k = nzb+1, nzt+1
849	DO j = nysg, nyng
850	u_p(k,j,0) = u(k,j,0) - dt_3d * tsc(2) * c_u_m(k) * &
851	( u(k,j,0) - u(k,j,1) ) * ddx
852
853	v_p(k,j,-1) = v(k,j,-1) - dt_3d * tsc(2) * c_v_m(k) * &
854	( v(k,j,-1) - v(k,j,0) ) * ddx
855
856	w_p(k,j,-1) = w(k,j,-1) - dt_3d * tsc(2) * c_w_m(k) * &
857	( w(k,j,-1) - w(k,j,0) ) * ddx
858	ENDDO
859	ENDDO
860
861	!
862	!-- Bottom boundary at the outflow
863	IF ( ibc_uv_b == 0 ) THEN
864	u_p(nzb,:,0) = 0.0_wp
865	v_p(nzb,:,-1) = 0.0_wp
866	ELSE
867	u_p(nzb,:,0) = u_p(nzb+1,:,0)
868	v_p(nzb,:,-1) = v_p(nzb+1,:,-1)
869	ENDIF
870	w_p(nzb,:,-1) = 0.0_wp
871
872	!
873	!-- Top boundary at the outflow
874	IF ( ibc_uv_t == 0 ) THEN
875	u_p(nzt+1,:,0) = u_init(nzt+1)
876	v_p(nzt+1,:,-1) = v_init(nzt+1)
877	ELSE
878	u_p(nzt+1,:,0) = u_p(nzt,:,0)
879	v_p(nzt+1,:,-1) = v_p(nzt,:,-1)
880	ENDIF
881	w_p(nzt:nzt+1,:,-1) = 0.0_wp
882
883	ENDIF
884
885	ENDIF
886
887	IF ( outflow_r ) THEN
888
889	IF ( use_cmax ) THEN
890	u_p(:,:,nx+1) = u(:,:,nx)
891	v_p(:,:,nx+1) = v(:,:,nx)
892	w_p(:,:,nx+1) = w(:,:,nx)
893	ELSEIF ( .NOT. use_cmax ) THEN
894
895	c_max = dx / dt_3d
896
897	c_u_m_l = 0.0_wp
898	c_v_m_l = 0.0_wp
899	c_w_m_l = 0.0_wp
900
901	c_u_m = 0.0_wp
902	c_v_m = 0.0_wp
903	c_w_m = 0.0_wp
904
905	!
906	!-- Calculate the phase speeds for u, v, and w, first local and then
907	!-- average along the outflow boundary.
908	DO k = nzb+1, nzt+1
909	DO j = nys, nyn
910
911	denom = u_m_r(k,j,nx) - u_m_r(k,j,nx-1)
912
913	IF ( denom /= 0.0_wp ) THEN
914	c_u(k,j) = -c_max * ( u(k,j,nx) - u_m_r(k,j,nx) ) / ( denom * tsc(2) )
915	IF ( c_u(k,j) < 0.0_wp ) THEN
916	c_u(k,j) = 0.0_wp
917	ELSEIF ( c_u(k,j) > c_max ) THEN
918	c_u(k,j) = c_max
919	ENDIF
920	ELSE
921	c_u(k,j) = c_max
922	ENDIF
923
924	denom = v_m_r(k,j,nx) - v_m_r(k,j,nx-1)
925
926	IF ( denom /= 0.0_wp ) THEN
927	c_v(k,j) = -c_max * ( v(k,j,nx) - v_m_r(k,j,nx) ) / ( denom * tsc(2) )
928	IF ( c_v(k,j) < 0.0_wp ) THEN
929	c_v(k,j) = 0.0_wp
930	ELSEIF ( c_v(k,j) > c_max ) THEN
931	c_v(k,j) = c_max
932	ENDIF
933	ELSE
934	c_v(k,j) = c_max
935	ENDIF
936
937	denom = w_m_r(k,j,nx) - w_m_r(k,j,nx-1)
938
939	IF ( denom /= 0.0_wp ) THEN
940	c_w(k,j) = -c_max * ( w(k,j,nx) - w_m_r(k,j,nx) ) / ( denom * tsc(2) )
941	IF ( c_w(k,j) < 0.0_wp ) THEN
942	c_w(k,j) = 0.0_wp
943	ELSEIF ( c_w(k,j) > c_max ) THEN
944	c_w(k,j) = c_max
945	ENDIF
946	ELSE
947	c_w(k,j) = c_max
948	ENDIF
949
950	c_u_m_l(k) = c_u_m_l(k) + c_u(k,j)
951	c_v_m_l(k) = c_v_m_l(k) + c_v(k,j)
952	c_w_m_l(k) = c_w_m_l(k) + c_w(k,j)
953
954	ENDDO
955	ENDDO
956
957	#if defined( __parallel )
958	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
959	CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, &
960	MPI_SUM, comm1dy, ierr )
961	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
962	CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, &
963	MPI_SUM, comm1dy, ierr )
964	IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr )
965	CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, &
966	MPI_SUM, comm1dy, ierr )
967	#else
968	c_u_m = c_u_m_l
969	c_v_m = c_v_m_l
970	c_w_m = c_w_m_l
971	#endif
972
973	c_u_m = c_u_m / (ny+1)
974	c_v_m = c_v_m / (ny+1)
975	c_w_m = c_w_m / (ny+1)
976
977	!
978	!-- Save old timelevels for the next timestep
979	IF ( intermediate_timestep_count == 1 ) THEN
980	u_m_r(:,:,:) = u(:,:,nx-1:nx)
981	v_m_r(:,:,:) = v(:,:,nx-1:nx)
982	w_m_r(:,:,:) = w(:,:,nx-1:nx)
983	ENDIF
984
985	!
986	!-- Calculate the new velocities
987	DO k = nzb+1, nzt+1
988	DO j = nysg, nyng
989	u_p(k,j,nx+1) = u(k,j,nx+1) - dt_3d * tsc(2) * c_u_m(k) * &
990	( u(k,j,nx+1) - u(k,j,nx) ) * ddx
991
992	v_p(k,j,nx+1) = v(k,j,nx+1) - dt_3d * tsc(2) * c_v_m(k) * &
993	( v(k,j,nx+1) - v(k,j,nx) ) * ddx
994
995	w_p(k,j,nx+1) = w(k,j,nx+1) - dt_3d * tsc(2) * c_w_m(k) * &
996	( w(k,j,nx+1) - w(k,j,nx) ) * ddx
997	ENDDO
998	ENDDO
999
1000	!
1001	!-- Bottom boundary at the outflow
1002	IF ( ibc_uv_b == 0 ) THEN
1003	u_p(nzb,:,nx+1) = 0.0_wp
1004	v_p(nzb,:,nx+1) = 0.0_wp
1005	ELSE
1006	u_p(nzb,:,nx+1) = u_p(nzb+1,:,nx+1)
1007	v_p(nzb,:,nx+1) = v_p(nzb+1,:,nx+1)
1008	ENDIF
1009	w_p(nzb,:,nx+1) = 0.0_wp
1010
1011	!
1012	!-- Top boundary at the outflow
1013	IF ( ibc_uv_t == 0 ) THEN
1014	u_p(nzt+1,:,nx+1) = u_init(nzt+1)
1015	v_p(nzt+1,:,nx+1) = v_init(nzt+1)
1016	ELSE
1017	u_p(nzt+1,:,nx+1) = u_p(nzt,:,nx+1)
1018	v_p(nzt+1,:,nx+1) = v_p(nzt,:,nx+1)
1019	ENDIF
1020	w_p(nzt:nzt+1,:,nx+1) = 0.0_wp
1021
1022	ENDIF
1023
1024	ENDIF
1025
1026	END SUBROUTINE boundary_conds

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

Download in other formats:

| Impressum | ©Leibniz Universität Hannover |