Home

Context Navigation

source: palm/trunk/SOURCE/boundary_conds.f90 @ 4180

Last change on this file since 4180 was 4180, checked in by scharf, 5 years ago
removed comments in 'Former revisions' section that are older than 01.01.2019
Property svn:keywords set to `Id`
File size: 34.9 KB

Line
1	!> @file boundary_conds.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
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 1997-2019 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: boundary_conds.f90 4180 2019-08-21 14:37:54Z scharf $
27	! - Revise setting for boundary conditions at horizontal walls, use the offset
28	! index that belongs to the data structure instead of pre-calculating
29	! the offset index for each facing.
30	! - Set boundary conditions for bulk-cloud quantities also at downward facing
31	! surfaces
32	!
33	! 4087 2019-07-11 11:35:23Z gronemeier
34	! Add comment
35	!
36	! 4086 2019-07-11 05:55:44Z gronemeier
37	! Bugfix: use constant-flux layer condition for e in all rans modes
38	!
39	! 3879 2019-04-08 20:25:23Z knoop
40	! Bugfix, do not set boundary conditions for potential temperature in neutral
41	! runs.
42	!
43	! 3655 2019-01-07 16:51:22Z knoop
44	! OpenACC port for SPEC
45	!
46	!
47	! Description:
48	! ------------
49	!> Boundary conditions for the prognostic quantities.
50	!> One additional bottom boundary condition is applied for the TKE (=(u)*2)
51	!> in prandtl_fluxes. The cyclic lateral boundary conditions are implicitly
52	!> handled in routine exchange_horiz. Pressure boundary conditions are
53	!> explicitly set in routines pres, poisfft, poismg and sor.
54	!------------------------------------------------------------------------------!
55	SUBROUTINE boundary_conds
56
57
58	USE arrays_3d, &
59	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, &
60	dzu, nc_p, nr_p, pt, pt_init, pt_p, q, &
61	q_p, qc_p, qr_p, s, s_p, sa, sa_p, u, u_init, u_m_l, u_m_n, &
62	u_m_r, u_m_s, u_p, v, v_init, v_m_l, v_m_n, v_m_r, v_m_s, v_p, &
63	w, w_p, w_m_l, w_m_n, w_m_r, w_m_s
64
65	USE bulk_cloud_model_mod, &
66	ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert
67
68	USE chemistry_model_mod, &
69	ONLY: chem_boundary_conds
70
71	USE control_parameters, &
72	ONLY: air_chemistry, bc_dirichlet_l, &
73	bc_dirichlet_s, bc_radiation_l, bc_radiation_n, bc_radiation_r, &
74	bc_radiation_s, bc_pt_t_val, bc_q_t_val, bc_s_t_val, &
75	child_domain, coupling_mode, dt_3d, &
76	humidity, ibc_pt_b, ibc_pt_t, ibc_q_b, ibc_q_t, ibc_s_b, &
77	ibc_s_t, ibc_uv_b, ibc_uv_t, intermediate_timestep_count, &
78	nesting_offline, neutral, nudging, ocean_mode, passive_scalar, &
79	tsc, salsa, use_cmax
80
81	USE grid_variables, &
82	ONLY: ddx, ddy, dx, dy
83
84	USE indices, &
85	ONLY: nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, nzt
86
87	USE kinds
88
89	USE ocean_mod, &
90	ONLY: ibc_sa_t
91
92	USE pegrid
93
94	USE pmc_interface, &
95	ONLY : nesting_mode
96
97	USE salsa_mod, &
98	ONLY: salsa_boundary_conds
99
100	USE surface_mod, &
101	ONLY : bc_h
102
103	USE turbulence_closure_mod, &
104	ONLY: tcm_boundary_conds
105
106	IMPLICIT NONE
107
108	INTEGER(iwp) :: i !< grid index x direction
109	INTEGER(iwp) :: j !< grid index y direction
110	INTEGER(iwp) :: k !< grid index z direction
111	INTEGER(iwp) :: l !< running index boundary type, for up- and downward-facing walls
112	INTEGER(iwp) :: m !< running index surface elements
113
114	REAL(wp) :: c_max !< maximum phase velocity allowed by CFL criterion, used for outflow boundary condition
115	REAL(wp) :: denom !< horizontal gradient of velocity component normal to the outflow boundary
116
117
118	!
119	!-- Bottom boundary
120	IF ( ibc_uv_b == 1 ) THEN
121	u_p(nzb,:,:) = u_p(nzb+1,:,:)
122	v_p(nzb,:,:) = v_p(nzb+1,:,:)
123	ENDIF
124	!
125	!-- Set zero vertical velocity at topography top (l=0), or bottom (l=1) in case
126	!-- of downward-facing surfaces.
127	DO l = 0, 1
128	!$OMP PARALLEL DO PRIVATE( i, j, k )
129	!$ACC PARALLEL LOOP PRIVATE(i, j, k) &
130	!$ACC PRESENT(bc_h, w_p)
131	DO m = 1, bc_h(l)%ns
132	i = bc_h(l)%i(m)
133	j = bc_h(l)%j(m)
134	k = bc_h(l)%k(m)
135	w_p(k+bc_h(l)%koff,j,i) = 0.0_wp
136	ENDDO
137	ENDDO
138
139	!
140	!-- Top boundary. A nested domain ( ibc_uv_t = 3 ) does not require settings.
141	IF ( ibc_uv_t == 0 ) THEN
142	!$ACC KERNELS PRESENT(u_p, v_p, u_init, v_init)
143	u_p(nzt+1,:,:) = u_init(nzt+1)
144	v_p(nzt+1,:,:) = v_init(nzt+1)
145	!$ACC END KERNELS
146	ELSEIF ( ibc_uv_t == 1 ) THEN
147	u_p(nzt+1,:,:) = u_p(nzt,:,:)
148	v_p(nzt+1,:,:) = v_p(nzt,:,:)
149	ENDIF
150
151	!
152	!-- Vertical nesting: Vertical velocity not zero at the top of the fine grid
153	IF ( .NOT. child_domain .AND. .NOT. nesting_offline .AND. &
154	TRIM(coupling_mode) /= 'vnested_fine' ) THEN
155	!$ACC KERNELS PRESENT(w_p)
156	w_p(nzt:nzt+1,:,:) = 0.0_wp !< nzt is not a prognostic level (but cf. pres)
157	!$ACC END KERNELS
158	ENDIF
159
160	!
161	!-- Temperature at bottom and top boundary.
162	!-- In case of coupled runs (ibc_pt_b = 2) the temperature is given by
163	!-- the sea surface temperature of the coupled ocean model.
164	!-- Dirichlet
165	IF ( .NOT. neutral ) THEN
166	IF ( ibc_pt_b == 0 ) THEN
167	DO l = 0, 1
168	!$OMP PARALLEL DO PRIVATE( i, j, k )
169	DO m = 1, bc_h(l)%ns
170	i = bc_h(l)%i(m)
171	j = bc_h(l)%j(m)
172	k = bc_h(l)%k(m)
173	pt_p(k+bc_h(l)%koff,j,i) = pt(k+bc_h(l)%koff,j,i)
174	ENDDO
175	ENDDO
176	!
177	!-- Neumann, zero-gradient
178	ELSEIF ( ibc_pt_b == 1 ) THEN
179	DO l = 0, 1
180	!$OMP PARALLEL DO PRIVATE( i, j, k )
181	!$ACC PARALLEL LOOP PRIVATE(i, j, k) &
182	!$ACC PRESENT(bc_h, pt_p)
183	DO m = 1, bc_h(l)%ns
184	i = bc_h(l)%i(m)
185	j = bc_h(l)%j(m)
186	k = bc_h(l)%k(m)
187	pt_p(k+bc_h(l)%koff,j,i) = pt_p(k,j,i)
188	ENDDO
189	ENDDO
190	ENDIF
191
192	!
193	!-- Temperature at top boundary
194	IF ( ibc_pt_t == 0 ) THEN
195	pt_p(nzt+1,:,:) = pt(nzt+1,:,:)
196	!
197	!-- In case of nudging adjust top boundary to pt which is
198	!-- read in from NUDGING-DATA
199	IF ( nudging ) THEN
200	pt_p(nzt+1,:,:) = pt_init(nzt+1)
201	ENDIF
202	ELSEIF ( ibc_pt_t == 1 ) THEN
203	pt_p(nzt+1,:,:) = pt_p(nzt,:,:)
204	ELSEIF ( ibc_pt_t == 2 ) THEN
205	!$ACC KERNELS PRESENT(pt_p, dzu)
206	pt_p(nzt+1,:,:) = pt_p(nzt,:,:) + bc_pt_t_val * dzu(nzt+1)
207	!$ACC END KERNELS
208	ENDIF
209	ENDIF
210	!
211	!-- Boundary conditions for salinity
212	IF ( ocean_mode ) THEN
213	!
214	!-- Bottom boundary: Neumann condition because salinity flux is always
215	!-- given.
216	DO l = 0, 1
217	!$OMP PARALLEL DO PRIVATE( i, j, k )
218	DO m = 1, bc_h(l)%ns
219	i = bc_h(l)%i(m)
220	j = bc_h(l)%j(m)
221	k = bc_h(l)%k(m)
222	sa_p(k+bc_h(l)%koff,j,i) = sa_p(k,j,i)
223	ENDDO
224	ENDDO
225	!
226	!-- Top boundary: Dirichlet or Neumann
227	IF ( ibc_sa_t == 0 ) THEN
228	sa_p(nzt+1,:,:) = sa(nzt+1,:,:)
229	ELSEIF ( ibc_sa_t == 1 ) THEN
230	sa_p(nzt+1,:,:) = sa_p(nzt,:,:)
231	ENDIF
232
233	ENDIF
234
235	!
236	!-- Boundary conditions for total water content,
237	!-- bottom and top boundary (see also temperature)
238	IF ( humidity ) THEN
239	!
240	!-- Surface conditions for constant_humidity_flux
241	!-- Run loop over all non-natural and natural walls. Note, in wall-datatype
242	!-- the k coordinate belongs to the atmospheric grid point, therefore, set
243	!-- q_p at k-1
244	IF ( ibc_q_b == 0 ) THEN
245
246	DO l = 0, 1
247	!$OMP PARALLEL DO PRIVATE( i, j, k )
248	DO m = 1, bc_h(l)%ns
249	i = bc_h(l)%i(m)
250	j = bc_h(l)%j(m)
251	k = bc_h(l)%k(m)
252	q_p(k+bc_h(l)%koff,j,i) = q(k+bc_h(l)%koff,j,i)
253	ENDDO
254	ENDDO
255
256	ELSE
257
258	DO l = 0, 1
259	!$OMP PARALLEL DO PRIVATE( i, j, k )
260	DO m = 1, bc_h(l)%ns
261	i = bc_h(l)%i(m)
262	j = bc_h(l)%j(m)
263	k = bc_h(l)%k(m)
264	q_p(k+bc_h(l)%koff,j,i) = q_p(k,j,i)
265	ENDDO
266	ENDDO
267	ENDIF
268	!
269	!-- Top boundary
270	IF ( ibc_q_t == 0 ) THEN
271	q_p(nzt+1,:,:) = q(nzt+1,:,:)
272	ELSEIF ( ibc_q_t == 1 ) THEN
273	q_p(nzt+1,:,:) = q_p(nzt,:,:) + bc_q_t_val * dzu(nzt+1)
274	ENDIF
275
276	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
277	!
278	!-- Surface conditions cloud water (Dirichlet)
279	!-- Run loop over all non-natural and natural walls. Note, in wall-datatype
280	!-- the k coordinate belongs to the atmospheric grid point, therefore, set
281	!-- qr_p and nr_p at upward (k-1) and downward-facing (k+1) walls
282	DO l = 0, 1
283	!$OMP PARALLEL DO PRIVATE( i, j, k )
284	DO m = 1, bc_h(l)%ns
285	i = bc_h(l)%i(m)
286	j = bc_h(l)%j(m)
287	k = bc_h(l)%k(m)
288	qc_p(k+bc_h(l)%koff,j,i) = 0.0_wp
289	nc_p(k+bc_h(l)%koff,j,i) = 0.0_wp
290	ENDDO
291	ENDDO
292	!
293	!-- Top boundary condition for cloud water (Dirichlet)
294	qc_p(nzt+1,:,:) = 0.0_wp
295	nc_p(nzt+1,:,:) = 0.0_wp
296
297	ENDIF
298
299	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
300	!
301	!-- Surface conditions rain water (Dirichlet)
302	!-- Run loop over all non-natural and natural walls. Note, in wall-datatype
303	!-- the k coordinate belongs to the atmospheric grid point, therefore, set
304	!-- qr_p and nr_p at upward (k-1) and downward-facing (k+1) walls
305	DO l = 0, 1
306	!$OMP PARALLEL DO PRIVATE( i, j, k )
307	DO m = 1, bc_h(l)%ns
308	i = bc_h(l)%i(m)
309	j = bc_h(l)%j(m)
310	k = bc_h(l)%k(m)
311	qr_p(k+bc_h(l)%koff,j,i) = 0.0_wp
312	nr_p(k+bc_h(l)%koff,j,i) = 0.0_wp
313	ENDDO
314	ENDDO
315	!
316	!-- Top boundary condition for rain water (Dirichlet)
317	qr_p(nzt+1,:,:) = 0.0_wp
318	nr_p(nzt+1,:,:) = 0.0_wp
319
320	ENDIF
321	ENDIF
322	!
323	!-- Boundary conditions for scalar,
324	!-- bottom and top boundary (see also temperature)
325	IF ( passive_scalar ) THEN
326	!
327	!-- Surface conditions for constant_humidity_flux
328	!-- Run loop over all non-natural and natural walls. Note, in wall-datatype
329	!-- the k coordinate belongs to the atmospheric grid point, therefore, set
330	!-- s_p at k-1
331	IF ( ibc_s_b == 0 ) THEN
332
333	DO l = 0, 1
334	!$OMP PARALLEL DO PRIVATE( i, j, k )
335	DO m = 1, bc_h(l)%ns
336	i = bc_h(l)%i(m)
337	j = bc_h(l)%j(m)
338	k = bc_h(l)%k(m)
339	s_p(k+bc_h(l)%koff,j,i) = s(k+bc_h(l)%koff,j,i)
340	ENDDO
341	ENDDO
342
343	ELSE
344
345	DO l = 0, 1
346	!$OMP PARALLEL DO PRIVATE( i, j, k )
347	DO m = 1, bc_h(l)%ns
348	i = bc_h(l)%i(m)
349	j = bc_h(l)%j(m)
350	k = bc_h(l)%k(m)
351	s_p(k+bc_h(l)%koff,j,i) = s_p(k,j,i)
352	ENDDO
353	ENDDO
354	ENDIF
355	!
356	!-- Top boundary condition
357	IF ( ibc_s_t == 0 ) THEN
358	s_p(nzt+1,:,:) = s(nzt+1,:,:)
359	ELSEIF ( ibc_s_t == 1 ) THEN
360	s_p(nzt+1,:,:) = s_p(nzt,:,:)
361	ELSEIF ( ibc_s_t == 2 ) THEN
362	s_p(nzt+1,:,:) = s_p(nzt,:,:) + bc_s_t_val * dzu(nzt+1)
363	ENDIF
364
365	ENDIF
366	!
367	!-- Set boundary conditions for subgrid TKE and dissipation (RANS mode)
368	CALL tcm_boundary_conds
369	!
370	!-- Top/bottom boundary conditions for chemical species
371	IF ( air_chemistry ) CALL chem_boundary_conds( 'set_bc_bottomtop' )
372	!
373	!-- In case of inflow or nest boundary at the south boundary the boundary for v
374	!-- is at nys and in case of inflow or nest boundary at the left boundary the
375	!-- boundary for u is at nxl. Since in prognostic_equations (cache optimized
376	!-- version) these levels are handled as a prognostic level, boundary values
377	!-- have to be restored here.
378	IF ( bc_dirichlet_s ) THEN
379	v_p(:,nys,:) = v_p(:,nys-1,:)
380	ELSEIF ( bc_dirichlet_l ) THEN
381	u_p(:,:,nxl) = u_p(:,:,nxl-1)
382	ENDIF
383
384	!
385	!-- The same restoration for u at i=nxl and v at j=nys as above must be made
386	!-- in case of nest boundaries. This must not be done in case of vertical nesting
387	!-- mode as in that case the lateral boundaries are actually cyclic.
388	!-- Lateral oundary conditions for TKE and dissipation are set
389	!-- in tcm_boundary_conds.
390	IF ( nesting_mode /= 'vertical' .OR. nesting_offline ) THEN
391	IF ( bc_dirichlet_s ) THEN
392	v_p(:,nys,:) = v_p(:,nys-1,:)
393	ENDIF
394	IF ( bc_dirichlet_l ) THEN
395	u_p(:,:,nxl) = u_p(:,:,nxl-1)
396	ENDIF
397	ENDIF
398
399	!
400	!-- Lateral boundary conditions for scalar quantities at the outflow.
401	!-- Lateral oundary conditions for TKE and dissipation are set
402	!-- in tcm_boundary_conds.
403	IF ( bc_radiation_s ) THEN
404	pt_p(:,nys-1,:) = pt_p(:,nys,:)
405	IF ( humidity ) THEN
406	q_p(:,nys-1,:) = q_p(:,nys,:)
407	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
408	qc_p(:,nys-1,:) = qc_p(:,nys,:)
409	nc_p(:,nys-1,:) = nc_p(:,nys,:)
410	ENDIF
411	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
412	qr_p(:,nys-1,:) = qr_p(:,nys,:)
413	nr_p(:,nys-1,:) = nr_p(:,nys,:)
414	ENDIF
415	ENDIF
416	IF ( passive_scalar ) s_p(:,nys-1,:) = s_p(:,nys,:)
417	ELSEIF ( bc_radiation_n ) THEN
418	pt_p(:,nyn+1,:) = pt_p(:,nyn,:)
419	IF ( humidity ) THEN
420	q_p(:,nyn+1,:) = q_p(:,nyn,:)
421	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
422	qc_p(:,nyn+1,:) = qc_p(:,nyn,:)
423	nc_p(:,nyn+1,:) = nc_p(:,nyn,:)
424	ENDIF
425	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
426	qr_p(:,nyn+1,:) = qr_p(:,nyn,:)
427	nr_p(:,nyn+1,:) = nr_p(:,nyn,:)
428	ENDIF
429	ENDIF
430	IF ( passive_scalar ) s_p(:,nyn+1,:) = s_p(:,nyn,:)
431	ELSEIF ( bc_radiation_l ) THEN
432	pt_p(:,:,nxl-1) = pt_p(:,:,nxl)
433	IF ( humidity ) THEN
434	q_p(:,:,nxl-1) = q_p(:,:,nxl)
435	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
436	qc_p(:,:,nxl-1) = qc_p(:,:,nxl)
437	nc_p(:,:,nxl-1) = nc_p(:,:,nxl)
438	ENDIF
439	IF ( bulk_cloud_model .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 ( bc_radiation_r ) THEN
446	pt_p(:,:,nxr+1) = pt_p(:,:,nxr)
447	IF ( humidity ) THEN
448	q_p(:,:,nxr+1) = q_p(:,:,nxr)
449	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
450	qc_p(:,:,nxr+1) = qc_p(:,:,nxr)
451	nc_p(:,:,nxr+1) = nc_p(:,:,nxr)
452	ENDIF
453	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
454	qr_p(:,:,nxr+1) = qr_p(:,:,nxr)
455	nr_p(:,:,nxr+1) = nr_p(:,:,nxr)
456	ENDIF
457	ENDIF
458	IF ( passive_scalar ) s_p(:,:,nxr+1) = s_p(:,:,nxr)
459	ENDIF
460
461	!
462	!-- Lateral boundary conditions for chemical species
463	IF ( air_chemistry ) CALL chem_boundary_conds( 'set_bc_lateral' )
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 ( bc_radiation_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 ( bc_radiation_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 ( bc_radiation_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 ( bc_radiation_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	IF ( salsa ) THEN
1027	CALL salsa_boundary_conds
1028	ENDIF
1029
1030	END SUBROUTINE boundary_conds

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

Download in other formats:

| Impressum | ©Leibniz Universität Hannover |