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source: palm/trunk/SOURCE/spectra_mod.f90 @ 2938

Last change on this file since 2938 was 2932, checked in by maronga, 6 years ago
renamed all Fortran NAMELISTS
Property svn:keywords set to `Id`
File size: 28.6 KB

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1	!> @file spectra_mod.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 1997-2018 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: spectra_mod.f90 2932 2018-03-26 09:39:22Z suehring $
27	! renamed spectra_par to spectra_parameters
28	!
29	! 2841 2018-02-27 15:02:57Z knoop
30	! Bugfix: wrong placement of include 'mpif.h' corrected
31	!
32	! 2718 2018-01-02 08:49:38Z maronga
33	! Corrected "Former revisions" section
34	!
35	! 2696 2017-12-14 17:12:51Z kanani
36	! Change in file header (GPL part)
37	!
38	! 2216 2017-04-28 12:54:20Z suehring
39	!
40	! 2193 2017-03-22 04:21:28Z raasch
41	! Normalization of spectra output adjusted
42	!
43	! 2192 2017-03-22 04:14:10Z raasch
44	! bugfix for index bounds of arrays spectrum_x and spectrum_y
45	!
46	! 2000 2016-08-20 18:09:15Z knoop
47	! Forced header and separation lines into 80 columns
48	!
49	! 1960 2016-07-12 16:34:24Z suehring
50	! Additional default spectra for passive scalar
51	!
52	! 1833 2016-04-07 14:23:03Z raasch
53	! file renamed, reading the spectra_par NAMELIST moved from package_parin to
54	! here
55	!
56	! 1815 2016-04-06 13:49:59Z raasch
57	! bugfix: preprocessor directives included for the non-parallel case
58	!
59	! 1808 2016-04-05 19:44:00Z raasch
60	! MPI module used by default on all machines
61	!
62	! 1786 2016-03-08 05:49:27Z raasch
63	! routine is modularized, filename renamed from calc_spectra to spectrum,
64	! privious data module spectrum moved from modules.f90 to here,
65	! cpp-direktives for spectra removed, immediate return if no spectra levels are
66	! given
67	!
68	! 1682 2015-10-07 23:56:08Z knoop
69	! Code annotations made doxygen readable
70	!
71	! 1575 2015-03-27 09:56:27Z raasch
72	! adjustments for psolver-queries
73	!
74	! 1511 2014-12-16 15:54:16Z suehring
75	! Bugfix concerning spectra normalization
76	!
77	! 1431 2014-07-15 14:47:17Z suehring
78	! Wavenumber-integrated spectra coincide with respective variance.
79	!
80	! 1342 2014-03-26 17:04:47Z kanani
81	! REAL constants defined as wp-kinds
82	!
83	! 1324 2014-03-21 09:13:16Z suehring
84	! Bugfix: nzb_x, nzb_yd, nyn_x, nyn_x, nzt_x, nzt_yd belong to transpose_indices
85	!
86	! 1320 2014-03-20 08:40:49Z raasch
87	! ONLY-attribute added to USE-statements,
88	! kind-parameters added to all INTEGER and REAL declaration statements,
89	! kinds are defined in new module kinds,
90	! revision history before 2012 removed,
91	! comment fields (!:) to be used for variable explanations added to
92	! all variable declaration statements
93	!
94	! 1318 2014-03-17 13:35:16Z raasch
95	! module interfaces removed
96	!
97	! 1216 2013-08-26 09:31:42Z raasch
98	! resorting of array moved to separate routine resort_for_zx,
99	! one argument removed from the transpose_..d routines
100	!
101	! 1120 2013-04-05 15:11:35Z raasch
102	! bugfix: calls of fft_x\|y replaced by fft_x\|y_1d
103	!
104	! 1036 2012-10-22 13:43:42Z raasch
105	! code put under GPL (PALM 3.9)
106	!
107	! 1003 2012-09-14 14:35:53Z raasch
108	! adjustment of array tend for cases with unequal subdomain sizes removed
109	!
110	! Revision 1.1 2001/01/05 15:08:07 raasch
111	! Initial revision
112	!
113	!
114	! Description:
115	! ------------
116	!> Calculate horizontal spectra along x and y.
117	!> ATTENTION: 1d-decomposition along y still needs improvement, because in that
118	!> case the gridpoint number along z still depends on the PE number
119	!> because transpose_xz has to be used (and possibly also
120	!> transpose_zyd needs modification).
121	!------------------------------------------------------------------------------!
122	MODULE spectra_mod
123
124	USE kinds
125
126	PRIVATE
127
128	CHARACTER (LEN=2), DIMENSION(10) :: spectra_direction = 'x'
129	CHARACTER (LEN=10), DIMENSION(10) :: data_output_sp = ' '
130
131	INTEGER(iwp) :: average_count_sp = 0
132	INTEGER(iwp) :: dosp_time_count = 0
133	INTEGER(iwp) :: n_sp_x = 0, n_sp_y = 0
134
135	INTEGER(iwp) :: comp_spectra_level(100) = 999999
136
137	LOGICAL :: calculate_spectra = .FALSE. !< internal switch that spectra are calculated
138	LOGICAL :: spectra_initialized = .FALSE. !< internal switch that spectra related quantities are initialized
139
140	REAL(wp) :: averaging_interval_sp = 9999999.9_wp !< averaging interval for spectra output
141	REAL(wp) :: dt_dosp = 9999999.9_wp !< time interval for spectra output
142	REAL(wp) :: skip_time_dosp = 9999999.9_wp !< no output of spectra data before this interval has passed
143
144	REAL(wp), DIMENSION(:), ALLOCATABLE :: var_d
145
146	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: spectrum_x, spectrum_y
147
148	SAVE
149
150	INTERFACE calc_spectra
151	MODULE PROCEDURE calc_spectra
152	END INTERFACE calc_spectra
153
154	INTERFACE preprocess_spectra
155	MODULE PROCEDURE preprocess_spectra
156	END INTERFACE preprocess_spectra
157
158	INTERFACE calc_spectra_x
159	MODULE PROCEDURE calc_spectra_x
160	END INTERFACE calc_spectra_x
161
162	INTERFACE calc_spectra_y
163	MODULE PROCEDURE calc_spectra_y
164	END INTERFACE calc_spectra_y
165
166	INTERFACE spectra_check_parameters
167	MODULE PROCEDURE spectra_check_parameters
168	END INTERFACE spectra_check_parameters
169
170	INTERFACE spectra_header
171	MODULE PROCEDURE spectra_header
172	END INTERFACE spectra_header
173
174	INTERFACE spectra_init
175	MODULE PROCEDURE spectra_init
176	END INTERFACE spectra_init
177
178	INTERFACE spectra_parin
179	MODULE PROCEDURE spectra_parin
180	END INTERFACE spectra_parin
181
182	PUBLIC average_count_sp, averaging_interval_sp, calc_spectra, &
183	calculate_spectra, comp_spectra_level, data_output_sp, &
184	dosp_time_count, dt_dosp, n_sp_x, n_sp_y, plot_spectra_level, &
185	skip_time_dosp, spectra_check_parameters, spectra_direction, &
186	spectra_header, spectra_init, spectra_parin, spectrum_x, &
187	spectrum_y, var_d
188
189
190	CONTAINS
191
192	!------------------------------------------------------------------------------!
193	! Description:
194	! ------------
195	!> Parin for &spectra_par for calculating spectra
196	!------------------------------------------------------------------------------!
197	SUBROUTINE spectra_parin
198
199	USE control_parameters, &
200	ONLY: dt_data_output, message_string
201
202	IMPLICIT NONE
203
204	CHARACTER (LEN=80) :: line !< dummy string that contains the current &
205	!< line of the parameter file
206
207	NAMELIST /spectra_par/ averaging_interval_sp, comp_spectra_level, &
208	data_output_sp, dt_dosp, skip_time_dosp, &
209	spectra_direction
210
211	NAMELIST /spectra_parameters/ &
212	averaging_interval_sp, comp_spectra_level, &
213	data_output_sp, dt_dosp, skip_time_dosp, &
214	spectra_direction
215	!
216	!-- Position the namelist-file at the beginning (it was already opened in
217	!-- parin), search for the namelist-group of the package and position the
218	!-- file at this line.
219	line = ' '
220
221	!
222	!-- Try to find the spectra package
223	REWIND ( 11 )
224	line = ' '
225	DO WHILE ( INDEX( line, '&spectra_parameters' ) == 0 )
226	READ ( 11, '(A)', END=10 ) line
227	ENDDO
228	BACKSPACE ( 11 )
229
230	!
231	!-- Read namelist
232	READ ( 11, spectra_parameters )
233
234	!
235	!-- Default setting of dt_dosp here (instead of check_parameters), because
236	!-- its current value is needed in init_pegrid
237	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
238
239	!
240	!-- Set general switch that spectra shall be calculated
241	calculate_spectra = .TRUE.
242
243	GOTO 12
244	!
245	!-- Try to find the old namelist
246	10 REWIND ( 11 )
247	line = ' '
248	DO WHILE ( INDEX( line, '&spectra_par' ) == 0 )
249	READ ( 11, '(A)', END=12 ) line
250	ENDDO
251	BACKSPACE ( 11 )
252
253	!
254	!-- Read namelist
255	READ ( 11, spectra_par )
256
257
258	message_string = 'namelist spectra_par is deprecated and will be ' // &
259	'removed in near future. Please &use namelist ' // &
260	'spectra_parameters instead'
261	CALL message( 'spectra_parin', 'PA0487', 0, 1, 0, 6, 0 )
262	!
263	!-- Default setting of dt_dosp here (instead of check_parameters), because
264	!-- its current value is needed in init_pegrid
265	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
266
267	!
268	!-- Set general switch that spectra shall be calculated
269	calculate_spectra = .TRUE.
270
271
272	12 CONTINUE
273
274	END SUBROUTINE spectra_parin
275
276
277
278	!------------------------------------------------------------------------------!
279	! Description:
280	! ------------
281	!> Initialization of spectra related variables
282	!------------------------------------------------------------------------------!
283	SUBROUTINE spectra_init
284
285	USE indices, &
286	ONLY: nx, ny, nzb, nzt
287
288	IMPLICIT NONE
289
290	IF ( spectra_initialized ) RETURN
291
292	IF ( dt_dosp /= 9999999.9_wp ) THEN
293	ALLOCATE( spectrum_x( 1:nx/2, 1:100, 1:10 ), &
294	spectrum_y( 1:ny/2, 1:100, 1:10 ) )
295	spectrum_x = 0.0_wp
296	spectrum_y = 0.0_wp
297
298	ALLOCATE( var_d(nzb:nzt+1) )
299	var_d = 0.0_wp
300	ENDIF
301
302	spectra_initialized = .TRUE.
303
304	END SUBROUTINE spectra_init
305
306
307
308	!------------------------------------------------------------------------------!
309	! Description:
310	! ------------
311	!> Check spectra related quantities
312	!------------------------------------------------------------------------------!
313	SUBROUTINE spectra_check_parameters
314
315	USE control_parameters, &
316	ONLY: averaging_interval, message_string, skip_time_data_output
317
318	IMPLICIT NONE
319
320	!
321	!-- Check the average interval
322	IF ( averaging_interval_sp == 9999999.9_wp ) THEN
323	averaging_interval_sp = averaging_interval
324	ENDIF
325
326	IF ( averaging_interval_sp > dt_dosp ) THEN
327	WRITE( message_string, * ) 'averaging_interval_sp = ', &
328	averaging_interval_sp, ' must be <= dt_dosp = ', dt_dosp
329	CALL message( 'spectra_check_parameters', 'PA0087', 1, 2, 0, 6, 0 )
330	ENDIF
331
332	!
333	!-- Set the default skip time interval for data output, if necessary
334	IF ( skip_time_dosp == 9999999.9_wp ) &
335	skip_time_dosp = skip_time_data_output
336
337	END SUBROUTINE spectra_check_parameters
338
339
340
341	!------------------------------------------------------------------------------!
342	! Description:
343	! ------------
344	!> Header output for spectra
345	!>
346	!> @todo Output of netcdf data format and compression level
347	!------------------------------------------------------------------------------!
348	SUBROUTINE spectra_header ( io )
349
350	USE control_parameters, &
351	ONLY: dt_averaging_input_pr
352
353	! USE netcdf_interface, &
354	! ONLY: netcdf_data_format_string, netcdf_deflate
355
356	IMPLICIT NONE
357
358	CHARACTER (LEN=40) :: output_format !< internal string
359
360	INTEGER(iwp) :: i !< internal counter
361	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
362
363	!
364	!-- Spectra output
365	IF ( dt_dosp /= 9999999.9_wp ) THEN
366	WRITE ( io, 1 )
367
368	! output_format = netcdf_data_format_string
369	! IF ( netcdf_deflate == 0 ) THEN
370	! WRITE ( io, 2 ) output_format
371	! ELSE
372	! WRITE ( io, 3 ) TRIM( output_format ), netcdf_deflate
373	! ENDIF
374	WRITE ( io, 2 ) 'see profiles or other quantities'
375	WRITE ( io, 4 ) dt_dosp
376	IF ( skip_time_dosp /= 0.0_wp ) WRITE ( io, 5 ) skip_time_dosp
377	WRITE ( io, 6 ) ( data_output_sp(i), i = 1,10 ), &
378	( spectra_direction(i), i = 1,10 ), &
379	( comp_spectra_level(i), i = 1,100 ), &
380	averaging_interval_sp, dt_averaging_input_pr
381	ENDIF
382
383	1 FORMAT (' Spectra:')
384	2 FORMAT (' Output format: ',A/)
385	3 FORMAT (' Output format: ',A, ' compressed with level: ',I1/)
386	4 FORMAT (' Output every ',F7.1,' s'/)
387	5 FORMAT (' No output during initial ',F8.2,' s')
388	6 FORMAT (' Arrays: ', 10(A5,',')/ &
389	' Directions: ', 10(A5,',')/ &
390	' height levels k = ', 20(I3,',')/ &
391	' ', 20(I3,',')/ &
392	' ', 20(I3,',')/ &
393	' ', 20(I3,',')/ &
394	' ', 19(I3,','),I3,'.'/ &
395	' Time averaged over ', F7.1, ' s,' / &
396	' Profiles for the time averaging are taken every ', &
397	F6.1,' s')
398
399	END SUBROUTINE spectra_header
400
401
402
403	SUBROUTINE calc_spectra
404
405	USE arrays_3d, &
406	ONLY: d, tend
407
408	USE control_parameters, &
409	ONLY: bc_lr_cyc, bc_ns_cyc, message_string, psolver
410
411	USE cpulog, &
412	ONLY: cpu_log, log_point
413
414	USE fft_xy, &
415	ONLY: fft_init
416
417	USE indices, &
418	ONLY: nxl, nxr, nyn, nys, nzb, nzt
419
420	USE kinds
421
422	USE pegrid, &
423	ONLY: myid, pdims
424
425	IMPLICIT NONE
426
427	INTEGER(iwp) :: m !<
428	INTEGER(iwp) :: pr !<
429
430
431	!
432	!-- Check if user gave any levels for spectra to be calculated
433	IF ( comp_spectra_level(1) == 999999 ) RETURN
434
435	CALL cpu_log( log_point(30), 'calc_spectra', 'start' )
436
437	!
438	!-- Initialize spectra related quantities
439	CALL spectra_init
440
441	!
442	!-- Initialize ffts
443	CALL fft_init
444
445	!
446	!-- Reallocate array d in required size
447	IF ( psolver(1:9) == 'multigrid' ) THEN
448	DEALLOCATE( d )
449	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr) )
450	ENDIF
451
452	m = 1
453	DO WHILE ( data_output_sp(m) /= ' ' .AND. m <= 10 )
454	!
455	!-- Transposition from z --> x ( y --> x in case of a 1d-decomposition
456	!-- along x)
457	IF ( INDEX( spectra_direction(m), 'x' ) /= 0 ) THEN
458
459	!
460	!-- Calculation of spectra works for cyclic boundary conditions only
461	IF ( .NOT. bc_lr_cyc ) THEN
462
463	message_string = 'non-cyclic lateral boundaries along x do'// &
464	' not & allow calculation of spectra along x'
465	CALL message( 'calc_spectra', 'PA0160', 1, 2, 0, 6, 0 )
466	ENDIF
467
468	CALL preprocess_spectra( m, pr )
469
470	#if defined( __parallel )
471	IF ( pdims(2) /= 1 ) THEN
472	CALL resort_for_zx( d, tend )
473	CALL transpose_zx( tend, d )
474	ELSE
475	CALL transpose_yxd( d, d )
476	ENDIF
477	CALL calc_spectra_x( d, pr, m )
478	#else
479	message_string = 'sorry, calculation of spectra in non paral' // &
480	'lel mode& is still not realized'
481	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
482	#endif
483
484	ENDIF
485
486	!
487	!-- Transposition from z --> y (d is rearranged only in case of a
488	!-- 1d-decomposition along x)
489	IF ( INDEX( spectra_direction(m), 'y' ) /= 0 ) THEN
490
491	!
492	!-- Calculation of spectra works for cyclic boundary conditions only
493	IF ( .NOT. bc_ns_cyc ) THEN
494	IF ( myid == 0 ) THEN
495	message_string = 'non-cyclic lateral boundaries along y' // &
496	' do not & allow calculation of spectr' // &
497	'a along y'
498	CALL message( 'calc_spectra', 'PA0162', 1, 2, 0, 6, 0 )
499	ENDIF
500	CALL local_stop
501	ENDIF
502
503	CALL preprocess_spectra( m, pr )
504
505	#if defined( __parallel )
506	CALL transpose_zyd( d, d )
507	CALL calc_spectra_y( d, pr, m )
508	#else
509	message_string = 'sorry, calculation of spectra in non paral' // &
510	'lel mode& is still not realized'
511	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
512	#endif
513
514	ENDIF
515
516	!
517	!-- Increase counter for next spectrum
518	m = m + 1
519
520	ENDDO
521
522	!
523	!-- Increase counter for averaging process in routine plot_spectra
524	average_count_sp = average_count_sp + 1
525
526	CALL cpu_log( log_point(30), 'calc_spectra', 'stop' )
527
528	END SUBROUTINE calc_spectra
529
530
531	!------------------------------------------------------------------------------!
532	! Description:
533	! ------------
534	!> @todo Missing subroutine description.
535	!------------------------------------------------------------------------------!
536	SUBROUTINE preprocess_spectra( m, pr )
537
538	USE arrays_3d, &
539	ONLY: d, pt, q, s, u, v, w
540
541	USE indices, &
542	ONLY: ngp_2dh, nxl, nxr, nyn, nys, nzb, nzt
543
544	USE kinds
545
546	#if defined( __parallel )
547	#if !defined( __mpifh )
548	USE MPI
549	#endif
550	#endif
551
552	USE pegrid, &
553	ONLY: collective_wait, comm2d, ierr
554
555	USE statistics, &
556	ONLY: hom
557
558
559	IMPLICIT NONE
560
561	#if defined( __parallel )
562	#if defined( __mpifh )
563	INCLUDE "mpif.h"
564	#endif
565	#endif
566
567	INTEGER(iwp) :: i !<
568	INTEGER(iwp) :: j !<
569	INTEGER(iwp) :: k !<
570	INTEGER(iwp) :: m !<
571	INTEGER(iwp) :: pr !<
572
573	REAL(wp), DIMENSION(nzb:nzt+1) :: var_d_l
574
575	SELECT CASE ( TRIM( data_output_sp(m) ) )
576
577	CASE ( 'u' )
578	pr = 1
579	d(nzb+1:nzt,nys:nyn,nxl:nxr) = u(nzb+1:nzt,nys:nyn,nxl:nxr)
580
581	CASE ( 'v' )
582	pr = 2
583	d(nzb+1:nzt,nys:nyn,nxl:nxr) = v(nzb+1:nzt,nys:nyn,nxl:nxr)
584
585	CASE ( 'w' )
586	pr = 3
587	d(nzb+1:nzt,nys:nyn,nxl:nxr) = w(nzb+1:nzt,nys:nyn,nxl:nxr)
588
589	CASE ( 'pt' )
590	pr = 4
591	d(nzb+1:nzt,nys:nyn,nxl:nxr) = pt(nzb+1:nzt,nys:nyn,nxl:nxr)
592
593	CASE ( 'q' )
594	pr = 41
595	d(nzb+1:nzt,nys:nyn,nxl:nxr) = q(nzb+1:nzt,nys:nyn,nxl:nxr)
596
597	CASE ( 's' )
598	pr = 117
599	d(nzb+1:nzt,nys:nyn,nxl:nxr) = s(nzb+1:nzt,nys:nyn,nxl:nxr)
600
601	CASE DEFAULT
602	!
603	!-- The DEFAULT case is reached either if the parameter data_output_sp(m)
604	!-- contains a wrong character string or if the user has coded a special
605	!-- case in the user interface. There, the subroutine user_spectra
606	!-- checks which of these two conditions applies.
607	CALL user_spectra( 'preprocess', m, pr )
608
609	END SELECT
610
611	!
612	!-- Subtract horizontal mean from the array, for which spectra have to be
613	!-- calculated. Moreover, calculate variance of the respective quantitiy,
614	!-- later used for normalizing spectra output.
615	var_d_l(:) = 0.0_wp
616	DO i = nxl, nxr
617	DO j = nys, nyn
618	DO k = nzb+1, nzt
619	d(k,j,i) = d(k,j,i) - hom(k,1,pr,0)
620	var_d_l(k) = var_d_l(k) + d(k,j,i) * d(k,j,i)
621	ENDDO
622	ENDDO
623	ENDDO
624	!
625	!-- Compute total variance from local variances
626	var_d(:) = 0.0_wp
627	#if defined( __parallel )
628	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
629	CALL MPI_ALLREDUCE( var_d_l(0), var_d(0), nzt+1-nzb, MPI_REAL, MPI_SUM, &
630	comm2d, ierr )
631	#else
632	var_d(:) = var_d_l(:)
633	#endif
634	var_d(:) = var_d(:) / ngp_2dh(0)
635
636	END SUBROUTINE preprocess_spectra
637
638
639	!------------------------------------------------------------------------------!
640	! Description:
641	! ------------
642	!> @todo Missing subroutine description.
643	!------------------------------------------------------------------------------!
644	SUBROUTINE calc_spectra_x( ddd, pr, m )
645
646	USE control_parameters, &
647	ONLY: fft_method
648
649	USE fft_xy, &
650	ONLY: fft_x_1d
651
652	USE grid_variables, &
653	ONLY: dx
654
655	USE indices, &
656	ONLY: nx, ny
657
658	USE kinds
659
660	#if defined( __parallel )
661	#if !defined( __mpifh )
662	USE MPI
663	#endif
664	#endif
665
666	USE pegrid, &
667	ONLY: comm2d, ierr, myid
668
669	USE transpose_indices, &
670	ONLY: nyn_x, nys_x, nzb_x, nzt_x
671
672
673	IMPLICIT NONE
674
675	#if defined( __parallel )
676	#if defined( __mpifh )
677	INCLUDE "mpif.h"
678	#endif
679	#endif
680
681	INTEGER(iwp) :: i !<
682	INTEGER(iwp) :: ishape(1) !<
683	INTEGER(iwp) :: j !<
684	INTEGER(iwp) :: k !<
685	INTEGER(iwp) :: m !<
686	INTEGER(iwp) :: n !<
687	INTEGER(iwp) :: pr !<
688
689	REAL(wp) :: exponent !<
690	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
691
692	REAL(wp), DIMENSION(0:nx) :: work !<
693
694	REAL(wp), DIMENSION(0:nx/2) :: sums_spectra_l !<
695
696	REAL(wp), DIMENSION(0:nx/2,100) :: sums_spectra !<
697
698	REAL(wp), DIMENSION(0:nx,nys_x:nyn_x,nzb_x:nzt_x) :: ddd !<
699
700	!
701	!-- Exponent for geometric average
702	exponent = 1.0_wp / ( ny + 1.0_wp )
703
704	!
705	!-- Loop over all levels defined by the user
706	n = 1
707	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
708
709	k = comp_spectra_level(n)
710
711	!
712	!-- Calculate FFT only if the corresponding level is situated on this PE
713	IF ( k >= nzb_x .AND. k <= nzt_x ) THEN
714
715	DO j = nys_x, nyn_x
716
717	work = ddd(0:nx,j,k)
718	CALL fft_x_1d( work, 'forward' )
719
720	ddd(0,j,k) = dx * work(0)**2
721	DO i = 1, nx/2
722	ddd(i,j,k) = dx * ( work(i)2 + work(nx+1-i)2 )
723	ENDDO
724
725	ENDDO
726
727	!
728	!-- Local sum and geometric average of these spectra
729	!-- (WARNING: no global sum should be performed, because floating
730	!-- point overflow may occur)
731	DO i = 0, nx/2
732
733	sums_spectra_l(i) = 1.0_wp
734	DO j = nys_x, nyn_x
735	sums_spectra_l(i) = sums_spectra_l(i) * ddd(i,j,k)**exponent
736	ENDDO
737
738	ENDDO
739
740	ELSE
741
742	sums_spectra_l = 1.0_wp
743
744	ENDIF
745
746	!
747	!-- Global sum of spectra on PE0 (from where they are written on file)
748	sums_spectra(:,n) = 0.0_wp
749	#if defined( __parallel )
750	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
751	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), nx/2+1, &
752	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
753	#else
754	sums_spectra(:,n) = sums_spectra_l
755	#endif
756	!
757	!-- Normalize spectra by variance
758	sum_spec_dum = SUM( sums_spectra(1:nx/2,n) )
759
760	IF ( sum_spec_dum /= 0.0_wp ) THEN
761	sums_spectra(1:nx/2,n) = sums_spectra(1:nx/2,n) * &
762	var_d(k) / sum_spec_dum
763	ENDIF
764	n = n + 1
765
766	ENDDO
767	n = n - 1
768
769	IF ( myid == 0 ) THEN
770	!
771	!-- Sum of spectra for later averaging (see routine data_output_spectra)
772	DO i = 1, nx/2
773	DO k = 1, n
774	spectrum_x(i,k,m) = spectrum_x(i,k,m) + sums_spectra(i,k)
775	ENDDO
776	ENDDO
777
778	ENDIF
779	!
780	!-- n_sp_x is needed by data_output_spectra_x
781	n_sp_x = n
782
783	END SUBROUTINE calc_spectra_x
784
785
786	!------------------------------------------------------------------------------!
787	! Description:
788	! ------------
789	!> @todo Missing subroutine description.
790	!------------------------------------------------------------------------------!
791	SUBROUTINE calc_spectra_y( ddd, pr, m )
792
793	USE control_parameters, &
794	ONLY: fft_method
795
796	USE fft_xy, &
797	ONLY: fft_y_1d
798
799	USE grid_variables, &
800	ONLY: dy
801
802	USE indices, &
803	ONLY: nx, ny
804
805	USE kinds
806
807	#if defined( __parallel )
808	#if !defined( __mpifh )
809	USE MPI
810	#endif
811	#endif
812
813	USE pegrid, &
814	ONLY: comm2d, ierr, myid
815
816	USE transpose_indices, &
817	ONLY: nxl_yd, nxr_yd, nzb_yd, nzt_yd
818
819
820	IMPLICIT NONE
821
822	#if defined( __parallel )
823	#if defined( __mpifh )
824	INCLUDE "mpif.h"
825	#endif
826	#endif
827
828	INTEGER(iwp) :: i !<
829	INTEGER(iwp) :: j !<
830	INTEGER(iwp) :: jshape(1) !<
831	INTEGER(iwp) :: k !<
832	INTEGER(iwp) :: m !<
833	INTEGER(iwp) :: n !<
834	INTEGER(iwp) :: pr !<
835
836	REAL(wp) :: exponent !<
837	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
838
839	REAL(wp), DIMENSION(0:ny) :: work !<
840
841	REAL(wp), DIMENSION(0:ny/2) :: sums_spectra_l !<
842
843	REAL(wp), DIMENSION(0:ny/2,100) :: sums_spectra !<
844
845	REAL(wp), DIMENSION(0:ny,nxl_yd:nxr_yd,nzb_yd:nzt_yd) :: ddd !<
846
847
848	!
849	!-- Exponent for geometric average
850	exponent = 1.0_wp / ( nx + 1.0_wp )
851
852	!
853	!-- Loop over all levels defined by the user
854	n = 1
855	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
856
857	k = comp_spectra_level(n)
858
859	!
860	!-- Calculate FFT only if the corresponding level is situated on this PE
861	IF ( k >= nzb_yd .AND. k <= nzt_yd ) THEN
862
863	DO i = nxl_yd, nxr_yd
864
865	work = ddd(0:ny,i,k)
866	CALL fft_y_1d( work, 'forward' )
867
868	ddd(0,i,k) = dy * work(0)**2
869	DO j = 1, ny/2
870	ddd(j,i,k) = dy * ( work(j)2 + work(ny+1-j)2 )
871	ENDDO
872
873	ENDDO
874
875	!
876	!-- Local sum and geometric average of these spectra
877	!-- (WARNING: no global sum should be performed, because floating
878	!-- point overflow may occur)
879	DO j = 0, ny/2
880
881	sums_spectra_l(j) = 1.0_wp
882	DO i = nxl_yd, nxr_yd
883	sums_spectra_l(j) = sums_spectra_l(j) * ddd(j,i,k)**exponent
884	ENDDO
885
886	ENDDO
887
888	ELSE
889
890	sums_spectra_l = 1.0_wp
891
892	ENDIF
893
894	!
895	!-- Global sum of spectra on PE0 (from where they are written on file)
896	sums_spectra(:,n) = 0.0_wp
897	#if defined( __parallel )
898	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
899	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), ny/2+1, &
900	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
901	#else
902	sums_spectra(:,n) = sums_spectra_l
903	#endif
904	!
905	!-- Normalize spectra by variance
906	sum_spec_dum = SUM( sums_spectra(1:ny/2,n) )
907	IF ( sum_spec_dum /= 0.0_wp ) THEN
908	sums_spectra(1:ny/2,n) = sums_spectra(1:ny/2,n) * &
909	var_d(k) / sum_spec_dum
910	ENDIF
911	n = n + 1
912
913	ENDDO
914	n = n - 1
915
916
917	IF ( myid == 0 ) THEN
918	!
919	!-- Sum of spectra for later averaging (see routine data_output_spectra)
920	DO j = 1, ny/2
921	DO k = 1, n
922	spectrum_y(j,k,m) = spectrum_y(j,k,m) + sums_spectra(j,k)
923	ENDDO
924	ENDDO
925
926	ENDIF
927
928	!
929	!-- n_sp_y is needed by data_output_spectra_y
930	n_sp_y = n
931
932	END SUBROUTINE calc_spectra_y
933
934	END MODULE spectra_mod

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