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source: palm/trunk/SOURCE/spectra_mod.f90 @ 3241

Last change on this file since 3241 was 3241, checked in by raasch, 6 years ago
various changes to avoid compiler warnings (mainly removal of unused variables)
Property svn:keywords set to `Id`
File size: 28.7 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 3241 2018-09-12 15:02:00Z raasch $
27	! unused variables removed
28	!
29	! 3049 2018-05-29 13:52:36Z Giersch
30	! Error messages revised
31	!
32	! 3045 2018-05-28 07:55:41Z Giersch
33	! Error message revised
34	!
35	! 2956 2018-04-10 11:01:03Z Giersch
36	! spectrum_x and spectrum_y will only be allocated if they are not allocated
37	! before (e.g. in case of restart runs)
38	!
39	! 2932 2018-03-26 09:39:22Z maronga
40	! renamed spectra_par to spectra_parameters
41	!
42	! 2841 2018-02-27 15:02:57Z knoop
43	! Bugfix: wrong placement of include 'mpif.h' corrected
44	!
45	! 2718 2018-01-02 08:49:38Z maronga
46	! Corrected "Former revisions" section
47	!
48	! 2696 2017-12-14 17:12:51Z kanani
49	! Change in file header (GPL part)
50	!
51	! 2216 2017-04-28 12:54:20Z suehring
52	!
53	! 2193 2017-03-22 04:21:28Z raasch
54	! Normalization of spectra output adjusted
55	!
56	! 2192 2017-03-22 04:14:10Z raasch
57	! bugfix for index bounds of arrays spectrum_x and spectrum_y
58	!
59	! 2000 2016-08-20 18:09:15Z knoop
60	! Forced header and separation lines into 80 columns
61	!
62	! 1960 2016-07-12 16:34:24Z suehring
63	! Additional default spectra for passive scalar
64	!
65	! 1833 2016-04-07 14:23:03Z raasch
66	! file renamed, reading the spectra_par NAMELIST moved from package_parin to
67	! here
68	!
69	! 1815 2016-04-06 13:49:59Z raasch
70	! bugfix: preprocessor directives included for the non-parallel case
71	!
72	! 1808 2016-04-05 19:44:00Z raasch
73	! MPI module used by default on all machines
74	!
75	! 1786 2016-03-08 05:49:27Z raasch
76	! routine is modularized, filename renamed from calc_spectra to spectrum,
77	! privious data module spectrum moved from modules.f90 to here,
78	! cpp-direktives for spectra removed, immediate return if no spectra levels are
79	! given
80	!
81	! 1682 2015-10-07 23:56:08Z knoop
82	! Code annotations made doxygen readable
83	!
84	! 1575 2015-03-27 09:56:27Z raasch
85	! adjustments for psolver-queries
86	!
87	! 1511 2014-12-16 15:54:16Z suehring
88	! Bugfix concerning spectra normalization
89	!
90	! 1431 2014-07-15 14:47:17Z suehring
91	! Wavenumber-integrated spectra coincide with respective variance.
92	!
93	! 1342 2014-03-26 17:04:47Z kanani
94	! REAL constants defined as wp-kinds
95	!
96	! 1324 2014-03-21 09:13:16Z suehring
97	! Bugfix: nzb_x, nzb_yd, nyn_x, nyn_x, nzt_x, nzt_yd belong to transpose_indices
98	!
99	! 1320 2014-03-20 08:40:49Z raasch
100	! ONLY-attribute added to USE-statements,
101	! kind-parameters added to all INTEGER and REAL declaration statements,
102	! kinds are defined in new module kinds,
103	! revision history before 2012 removed,
104	! comment fields (!:) to be used for variable explanations added to
105	! all variable declaration statements
106	!
107	! 1318 2014-03-17 13:35:16Z raasch
108	! module interfaces removed
109	!
110	! 1216 2013-08-26 09:31:42Z raasch
111	! resorting of array moved to separate routine resort_for_zx,
112	! one argument removed from the transpose_..d routines
113	!
114	! 1120 2013-04-05 15:11:35Z raasch
115	! bugfix: calls of fft_x\|y replaced by fft_x\|y_1d
116	!
117	! 1036 2012-10-22 13:43:42Z raasch
118	! code put under GPL (PALM 3.9)
119	!
120	! 1003 2012-09-14 14:35:53Z raasch
121	! adjustment of array tend for cases with unequal subdomain sizes removed
122	!
123	! Revision 1.1 2001/01/05 15:08:07 raasch
124	! Initial revision
125	!
126	!
127	! Description:
128	! ------------
129	!> Calculate horizontal spectra along x and y.
130	!> ATTENTION: 1d-decomposition along y still needs improvement, because in that
131	!> case the gridpoint number along z still depends on the PE number
132	!> because transpose_xz has to be used (and possibly also
133	!> transpose_zyd needs modification).
134	!------------------------------------------------------------------------------!
135	MODULE spectra_mod
136
137	USE kinds
138
139	PRIVATE
140
141	CHARACTER (LEN=2), DIMENSION(10) :: spectra_direction = 'x'
142	CHARACTER (LEN=10), DIMENSION(10) :: data_output_sp = ' '
143
144	INTEGER(iwp) :: average_count_sp = 0
145	INTEGER(iwp) :: dosp_time_count = 0
146	INTEGER(iwp) :: n_sp_x = 0, n_sp_y = 0
147
148	INTEGER(iwp) :: comp_spectra_level(100) = 999999
149
150	LOGICAL :: calculate_spectra = .FALSE. !< internal switch that spectra are calculated
151	LOGICAL :: spectra_initialized = .FALSE. !< internal switch that spectra related quantities are initialized
152
153	REAL(wp) :: averaging_interval_sp = 9999999.9_wp !< averaging interval for spectra output
154	REAL(wp) :: dt_dosp = 9999999.9_wp !< time interval for spectra output
155	REAL(wp) :: skip_time_dosp = 9999999.9_wp !< no output of spectra data before this interval has passed
156
157	REAL(wp), DIMENSION(:), ALLOCATABLE :: var_d
158
159	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: spectrum_x, spectrum_y
160
161	SAVE
162
163	INTERFACE calc_spectra
164	MODULE PROCEDURE calc_spectra
165	END INTERFACE calc_spectra
166
167	INTERFACE preprocess_spectra
168	MODULE PROCEDURE preprocess_spectra
169	END INTERFACE preprocess_spectra
170
171	INTERFACE calc_spectra_x
172	MODULE PROCEDURE calc_spectra_x
173	END INTERFACE calc_spectra_x
174
175	INTERFACE calc_spectra_y
176	MODULE PROCEDURE calc_spectra_y
177	END INTERFACE calc_spectra_y
178
179	INTERFACE spectra_check_parameters
180	MODULE PROCEDURE spectra_check_parameters
181	END INTERFACE spectra_check_parameters
182
183	INTERFACE spectra_header
184	MODULE PROCEDURE spectra_header
185	END INTERFACE spectra_header
186
187	INTERFACE spectra_init
188	MODULE PROCEDURE spectra_init
189	END INTERFACE spectra_init
190
191	INTERFACE spectra_parin
192	MODULE PROCEDURE spectra_parin
193	END INTERFACE spectra_parin
194
195	PUBLIC average_count_sp, averaging_interval_sp, calc_spectra, &
196	calculate_spectra, comp_spectra_level, data_output_sp, &
197	dosp_time_count, dt_dosp, n_sp_x, n_sp_y, plot_spectra_level, &
198	skip_time_dosp, spectra_check_parameters, spectra_direction, &
199	spectra_header, spectra_init, spectra_parin, spectrum_x, &
200	spectrum_y, var_d
201
202
203	CONTAINS
204
205	!------------------------------------------------------------------------------!
206	! Description:
207	! ------------
208	!> Parin for &spectra_par for calculating spectra
209	!------------------------------------------------------------------------------!
210	SUBROUTINE spectra_parin
211
212	USE control_parameters, &
213	ONLY: dt_data_output, message_string
214
215	IMPLICIT NONE
216
217	CHARACTER (LEN=80) :: line !< dummy string that contains the current &
218	!< line of the parameter file
219
220	NAMELIST /spectra_par/ averaging_interval_sp, comp_spectra_level, &
221	data_output_sp, dt_dosp, skip_time_dosp, &
222	spectra_direction
223
224	NAMELIST /spectra_parameters/ &
225	averaging_interval_sp, comp_spectra_level, &
226	data_output_sp, dt_dosp, skip_time_dosp, &
227	spectra_direction
228	!
229	!-- Position the namelist-file at the beginning (it was already opened in
230	!-- parin), search for the namelist-group of the package and position the
231	!-- file at this line.
232	line = ' '
233
234	!
235	!-- Try to find the spectra package
236	REWIND ( 11 )
237	line = ' '
238	DO WHILE ( INDEX( line, '&spectra_parameters' ) == 0 )
239	READ ( 11, '(A)', END=10 ) line
240	ENDDO
241	BACKSPACE ( 11 )
242
243	!
244	!-- Read namelist
245	READ ( 11, spectra_parameters )
246
247	!
248	!-- Default setting of dt_dosp here (instead of check_parameters), because
249	!-- its current value is needed in init_pegrid
250	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
251
252	!
253	!-- Set general switch that spectra shall be calculated
254	calculate_spectra = .TRUE.
255
256	GOTO 12
257	!
258	!-- Try to find the old namelist
259	10 REWIND ( 11 )
260	line = ' '
261	DO WHILE ( INDEX( line, '&spectra_par' ) == 0 )
262	READ ( 11, '(A)', END=12 ) line
263	ENDDO
264	BACKSPACE ( 11 )
265
266	!
267	!-- Read namelist
268	READ ( 11, spectra_par )
269
270
271	message_string = 'namelist spectra_par is deprecated and will be ' // &
272	'removed in near future. Please use namelist ' // &
273	'spectra_parameters instead'
274	CALL message( 'spectra_parin', 'PA0487', 0, 1, 0, 6, 0 )
275	!
276	!-- Default setting of dt_dosp here (instead of check_parameters), because
277	!-- its current value is needed in init_pegrid
278	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
279
280	!
281	!-- Set general switch that spectra shall be calculated
282	calculate_spectra = .TRUE.
283
284
285	12 CONTINUE
286
287	END SUBROUTINE spectra_parin
288
289
290
291	!------------------------------------------------------------------------------!
292	! Description:
293	! ------------
294	!> Initialization of spectra related variables
295	!------------------------------------------------------------------------------!
296	SUBROUTINE spectra_init
297
298	USE indices, &
299	ONLY: nx, ny, nzb, nzt
300
301	IMPLICIT NONE
302
303	IF ( spectra_initialized ) RETURN
304
305	IF ( dt_dosp /= 9999999.9_wp ) THEN
306
307	IF ( .NOT. ALLOCATED( spectrum_x ) ) THEN
308	ALLOCATE( spectrum_x( 1:nx/2, 1:100, 1:10 ) )
309	spectrum_x = 0.0_wp
310	ENDIF
311
312	IF ( .NOT. ALLOCATED( spectrum_y ) ) THEN
313	ALLOCATE( spectrum_y( 1:ny/2, 1:100, 1:10 ) )
314	spectrum_y = 0.0_wp
315	ENDIF
316
317	ALLOCATE( var_d(nzb:nzt+1) )
318	var_d = 0.0_wp
319	ENDIF
320
321	spectra_initialized = .TRUE.
322
323	END SUBROUTINE spectra_init
324
325
326
327	!------------------------------------------------------------------------------!
328	! Description:
329	! ------------
330	!> Check spectra related quantities
331	!------------------------------------------------------------------------------!
332	SUBROUTINE spectra_check_parameters
333
334	USE control_parameters, &
335	ONLY: averaging_interval, message_string, skip_time_data_output
336
337	IMPLICIT NONE
338
339	!
340	!-- Check the average interval
341	IF ( averaging_interval_sp == 9999999.9_wp ) THEN
342	averaging_interval_sp = averaging_interval
343	ENDIF
344
345	IF ( averaging_interval_sp > dt_dosp ) THEN
346	WRITE( message_string, * ) 'averaging_interval_sp = ', &
347	averaging_interval_sp, ' must be <= dt_dosp = ', dt_dosp
348	CALL message( 'spectra_check_parameters', 'PA0087', 1, 2, 0, 6, 0 )
349	ENDIF
350
351	!
352	!-- Set the default skip time interval for data output, if necessary
353	IF ( skip_time_dosp == 9999999.9_wp ) &
354	skip_time_dosp = skip_time_data_output
355
356	END SUBROUTINE spectra_check_parameters
357
358
359
360	!------------------------------------------------------------------------------!
361	! Description:
362	! ------------
363	!> Header output for spectra
364	!>
365	!> @todo Output of netcdf data format and compression level
366	!------------------------------------------------------------------------------!
367	SUBROUTINE spectra_header ( io )
368
369	USE control_parameters, &
370	ONLY: dt_averaging_input_pr
371
372	! USE netcdf_interface, &
373	! ONLY: netcdf_data_format_string, netcdf_deflate
374
375	IMPLICIT NONE
376
377	! CHARACTER (LEN=40) :: output_format !< internal string
378
379	INTEGER(iwp) :: i !< internal counter
380	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
381
382	!
383	!-- Spectra output
384	IF ( dt_dosp /= 9999999.9_wp ) THEN
385	WRITE ( io, 1 )
386
387	! output_format = netcdf_data_format_string
388	! IF ( netcdf_deflate == 0 ) THEN
389	! WRITE ( io, 2 ) output_format
390	! ELSE
391	! WRITE ( io, 3 ) TRIM( output_format ), netcdf_deflate
392	! ENDIF
393	WRITE ( io, 2 ) 'see profiles or other quantities'
394	WRITE ( io, 4 ) dt_dosp
395	IF ( skip_time_dosp /= 0.0_wp ) WRITE ( io, 5 ) skip_time_dosp
396	WRITE ( io, 6 ) ( data_output_sp(i), i = 1,10 ), &
397	( spectra_direction(i), i = 1,10 ), &
398	( comp_spectra_level(i), i = 1,100 ), &
399	averaging_interval_sp, dt_averaging_input_pr
400	ENDIF
401
402	1 FORMAT (' Spectra:')
403	2 FORMAT (' Output format: ',A/)
404	! 3 FORMAT (' Output format: ',A, ' compressed with level: ',I1/)
405	4 FORMAT (' Output every ',F7.1,' s'/)
406	5 FORMAT (' No output during initial ',F8.2,' s')
407	6 FORMAT (' Arrays: ', 10(A5,',')/ &
408	' Directions: ', 10(A5,',')/ &
409	' height levels k = ', 20(I3,',')/ &
410	' ', 20(I3,',')/ &
411	' ', 20(I3,',')/ &
412	' ', 20(I3,',')/ &
413	' ', 19(I3,','),I3,'.'/ &
414	' Time averaged over ', F7.1, ' s,' / &
415	' Profiles for the time averaging are taken every ', &
416	F6.1,' s')
417
418	END SUBROUTINE spectra_header
419
420
421
422	SUBROUTINE calc_spectra
423
424	USE arrays_3d, &
425	ONLY: d, tend
426
427	USE control_parameters, &
428	ONLY: bc_lr_cyc, bc_ns_cyc, message_string, psolver
429
430	USE cpulog, &
431	ONLY: cpu_log, log_point
432
433	USE fft_xy, &
434	ONLY: fft_init
435
436	USE indices, &
437	ONLY: nxl, nxr, nyn, nys, nzb, nzt
438
439	USE kinds
440
441	USE pegrid, &
442	ONLY: myid, pdims
443
444	IMPLICIT NONE
445
446	INTEGER(iwp) :: m !<
447	INTEGER(iwp) :: pr !<
448
449
450	!
451	!-- Check if user gave any levels for spectra to be calculated
452	IF ( comp_spectra_level(1) == 999999 ) RETURN
453
454	CALL cpu_log( log_point(30), 'calc_spectra', 'start' )
455
456	!
457	!-- Initialize spectra related quantities
458	CALL spectra_init
459
460	!
461	!-- Initialize ffts
462	CALL fft_init
463
464	!
465	!-- Reallocate array d in required size
466	IF ( psolver(1:9) == 'multigrid' ) THEN
467	DEALLOCATE( d )
468	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr) )
469	ENDIF
470
471	m = 1
472	DO WHILE ( data_output_sp(m) /= ' ' .AND. m <= 10 )
473	!
474	!-- Transposition from z --> x ( y --> x in case of a 1d-decomposition
475	!-- along x)
476	IF ( INDEX( spectra_direction(m), 'x' ) /= 0 ) THEN
477
478	!
479	!-- Calculation of spectra works for cyclic boundary conditions only
480	IF ( .NOT. bc_lr_cyc ) THEN
481
482	message_string = 'non-cyclic lateral boundaries along x do'// &
483	' not & allow calculation of spectra along x'
484	CALL message( 'calc_spectra', 'PA0160', 1, 2, 0, 6, 0 )
485	ENDIF
486
487	CALL preprocess_spectra( m, pr )
488
489	#if defined( __parallel )
490	IF ( pdims(2) /= 1 ) THEN
491	CALL resort_for_zx( d, tend )
492	CALL transpose_zx( tend, d )
493	ELSE
494	CALL transpose_yxd( d, d )
495	ENDIF
496	CALL calc_spectra_x( d, m )
497	#else
498	message_string = 'sorry, calculation of spectra in non paral' // &
499	'lel mode& is still not realized'
500	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
501	#endif
502
503	ENDIF
504
505	!
506	!-- Transposition from z --> y (d is rearranged only in case of a
507	!-- 1d-decomposition along x)
508	IF ( INDEX( spectra_direction(m), 'y' ) /= 0 ) THEN
509
510	!
511	!-- Calculation of spectra works for cyclic boundary conditions only
512	IF ( .NOT. bc_ns_cyc ) THEN
513	IF ( myid == 0 ) THEN
514	message_string = 'non-cyclic lateral boundaries along y' // &
515	' do not & allow calculation of spectra' //&
516	' along y'
517	CALL message( 'calc_spectra', 'PA0162', 1, 2, 0, 6, 0 )
518	ENDIF
519	CALL local_stop
520	ENDIF
521
522	CALL preprocess_spectra( m, pr )
523
524	#if defined( __parallel )
525	CALL transpose_zyd( d, d )
526	CALL calc_spectra_y( d, m )
527	#else
528	message_string = 'sorry, calculation of spectra in non paral' // &
529	'lel mode& is still not realized'
530	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
531	#endif
532
533	ENDIF
534
535	!
536	!-- Increase counter for next spectrum
537	m = m + 1
538
539	ENDDO
540
541	!
542	!-- Increase counter for averaging process in routine plot_spectra
543	average_count_sp = average_count_sp + 1
544
545	CALL cpu_log( log_point(30), 'calc_spectra', 'stop' )
546
547	END SUBROUTINE calc_spectra
548
549
550	!------------------------------------------------------------------------------!
551	! Description:
552	! ------------
553	!> @todo Missing subroutine description.
554	!------------------------------------------------------------------------------!
555	SUBROUTINE preprocess_spectra( m, pr )
556
557	USE arrays_3d, &
558	ONLY: d, pt, q, s, u, v, w
559
560	USE indices, &
561	ONLY: ngp_2dh, nxl, nxr, nyn, nys, nzb, nzt
562
563	USE kinds
564
565	#if defined( __parallel )
566	#if !defined( __mpifh )
567	USE MPI
568	#endif
569	#endif
570
571	USE pegrid, &
572	ONLY: collective_wait, comm2d, ierr
573
574	USE statistics, &
575	ONLY: hom
576
577
578	IMPLICIT NONE
579
580	#if defined( __parallel )
581	#if defined( __mpifh )
582	INCLUDE "mpif.h"
583	#endif
584	#endif
585
586	INTEGER(iwp) :: i !<
587	INTEGER(iwp) :: j !<
588	INTEGER(iwp) :: k !<
589	INTEGER(iwp) :: m !<
590	INTEGER(iwp) :: pr !<
591
592	REAL(wp), DIMENSION(nzb:nzt+1) :: var_d_l
593
594	SELECT CASE ( TRIM( data_output_sp(m) ) )
595
596	CASE ( 'u' )
597	pr = 1
598	d(nzb+1:nzt,nys:nyn,nxl:nxr) = u(nzb+1:nzt,nys:nyn,nxl:nxr)
599
600	CASE ( 'v' )
601	pr = 2
602	d(nzb+1:nzt,nys:nyn,nxl:nxr) = v(nzb+1:nzt,nys:nyn,nxl:nxr)
603
604	CASE ( 'w' )
605	pr = 3
606	d(nzb+1:nzt,nys:nyn,nxl:nxr) = w(nzb+1:nzt,nys:nyn,nxl:nxr)
607
608	CASE ( 'pt' )
609	pr = 4
610	d(nzb+1:nzt,nys:nyn,nxl:nxr) = pt(nzb+1:nzt,nys:nyn,nxl:nxr)
611
612	CASE ( 'q' )
613	pr = 41
614	d(nzb+1:nzt,nys:nyn,nxl:nxr) = q(nzb+1:nzt,nys:nyn,nxl:nxr)
615
616	CASE ( 's' )
617	pr = 117
618	d(nzb+1:nzt,nys:nyn,nxl:nxr) = s(nzb+1:nzt,nys:nyn,nxl:nxr)
619
620	CASE DEFAULT
621	!
622	!-- The DEFAULT case is reached either if the parameter data_output_sp(m)
623	!-- contains a wrong character string or if the user has coded a special
624	!-- case in the user interface. There, the subroutine user_spectra
625	!-- checks which of these two conditions applies.
626	CALL user_spectra( 'preprocess', m, pr )
627
628	END SELECT
629
630	!
631	!-- Subtract horizontal mean from the array, for which spectra have to be
632	!-- calculated. Moreover, calculate variance of the respective quantitiy,
633	!-- later used for normalizing spectra output.
634	var_d_l(:) = 0.0_wp
635	DO i = nxl, nxr
636	DO j = nys, nyn
637	DO k = nzb+1, nzt
638	d(k,j,i) = d(k,j,i) - hom(k,1,pr,0)
639	var_d_l(k) = var_d_l(k) + d(k,j,i) * d(k,j,i)
640	ENDDO
641	ENDDO
642	ENDDO
643	!
644	!-- Compute total variance from local variances
645	var_d(:) = 0.0_wp
646	#if defined( __parallel )
647	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
648	CALL MPI_ALLREDUCE( var_d_l(0), var_d(0), nzt+1-nzb, MPI_REAL, MPI_SUM, &
649	comm2d, ierr )
650	#else
651	var_d(:) = var_d_l(:)
652	#endif
653	var_d(:) = var_d(:) / ngp_2dh(0)
654
655	END SUBROUTINE preprocess_spectra
656
657
658	!------------------------------------------------------------------------------!
659	! Description:
660	! ------------
661	!> @todo Missing subroutine description.
662	!------------------------------------------------------------------------------!
663	SUBROUTINE calc_spectra_x( ddd, m )
664
665	USE fft_xy, &
666	ONLY: fft_x_1d
667
668	USE grid_variables, &
669	ONLY: dx
670
671	USE indices, &
672	ONLY: nx, ny
673
674	USE kinds
675
676	#if defined( __parallel )
677	#if !defined( __mpifh )
678	USE MPI
679	#endif
680	#endif
681
682	USE pegrid, &
683	ONLY: comm2d, ierr, myid
684
685	USE transpose_indices, &
686	ONLY: nyn_x, nys_x, nzb_x, nzt_x
687
688
689	IMPLICIT NONE
690
691	#if defined( __parallel )
692	#if defined( __mpifh )
693	INCLUDE "mpif.h"
694	#endif
695	#endif
696
697	INTEGER(iwp) :: i !<
698	INTEGER(iwp) :: j !<
699	INTEGER(iwp) :: k !<
700	INTEGER(iwp) :: m !<
701	INTEGER(iwp) :: n !<
702
703	REAL(wp) :: exponent !<
704	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
705
706	REAL(wp), DIMENSION(0:nx) :: work !<
707
708	REAL(wp), DIMENSION(0:nx/2) :: sums_spectra_l !<
709
710	REAL(wp), DIMENSION(0:nx/2,100) :: sums_spectra !<
711
712	REAL(wp), DIMENSION(0:nx,nys_x:nyn_x,nzb_x:nzt_x) :: ddd !<
713
714	!
715	!-- Exponent for geometric average
716	exponent = 1.0_wp / ( ny + 1.0_wp )
717
718	!
719	!-- Loop over all levels defined by the user
720	n = 1
721	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
722
723	k = comp_spectra_level(n)
724
725	!
726	!-- Calculate FFT only if the corresponding level is situated on this PE
727	IF ( k >= nzb_x .AND. k <= nzt_x ) THEN
728
729	DO j = nys_x, nyn_x
730
731	work = ddd(0:nx,j,k)
732	CALL fft_x_1d( work, 'forward' )
733
734	ddd(0,j,k) = dx * work(0)**2
735	DO i = 1, nx/2
736	ddd(i,j,k) = dx * ( work(i)2 + work(nx+1-i)2 )
737	ENDDO
738
739	ENDDO
740
741	!
742	!-- Local sum and geometric average of these spectra
743	!-- (WARNING: no global sum should be performed, because floating
744	!-- point overflow may occur)
745	DO i = 0, nx/2
746
747	sums_spectra_l(i) = 1.0_wp
748	DO j = nys_x, nyn_x
749	sums_spectra_l(i) = sums_spectra_l(i) * ddd(i,j,k)**exponent
750	ENDDO
751
752	ENDDO
753
754	ELSE
755
756	sums_spectra_l = 1.0_wp
757
758	ENDIF
759
760	!
761	!-- Global sum of spectra on PE0 (from where they are written on file)
762	sums_spectra(:,n) = 0.0_wp
763	#if defined( __parallel )
764	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
765	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), nx/2+1, &
766	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
767	#else
768	sums_spectra(:,n) = sums_spectra_l
769	#endif
770	!
771	!-- Normalize spectra by variance
772	sum_spec_dum = SUM( sums_spectra(1:nx/2,n) )
773
774	IF ( sum_spec_dum /= 0.0_wp ) THEN
775	sums_spectra(1:nx/2,n) = sums_spectra(1:nx/2,n) * &
776	var_d(k) / sum_spec_dum
777	ENDIF
778	n = n + 1
779
780	ENDDO
781	n = n - 1
782
783	IF ( myid == 0 ) THEN
784	!
785	!-- Sum of spectra for later averaging (see routine data_output_spectra)
786	DO i = 1, nx/2
787	DO k = 1, n
788	spectrum_x(i,k,m) = spectrum_x(i,k,m) + sums_spectra(i,k)
789	ENDDO
790	ENDDO
791
792	ENDIF
793	!
794	!-- n_sp_x is needed by data_output_spectra_x
795	n_sp_x = n
796
797	END SUBROUTINE calc_spectra_x
798
799
800	!------------------------------------------------------------------------------!
801	! Description:
802	! ------------
803	!> @todo Missing subroutine description.
804	!------------------------------------------------------------------------------!
805	SUBROUTINE calc_spectra_y( ddd, m )
806
807	USE fft_xy, &
808	ONLY: fft_y_1d
809
810	USE grid_variables, &
811	ONLY: dy
812
813	USE indices, &
814	ONLY: nx, ny
815
816	USE kinds
817
818	#if defined( __parallel )
819	#if !defined( __mpifh )
820	USE MPI
821	#endif
822	#endif
823
824	USE pegrid, &
825	ONLY: comm2d, ierr, myid
826
827	USE transpose_indices, &
828	ONLY: nxl_yd, nxr_yd, nzb_yd, nzt_yd
829
830
831	IMPLICIT NONE
832
833	#if defined( __parallel )
834	#if defined( __mpifh )
835	INCLUDE "mpif.h"
836	#endif
837	#endif
838
839	INTEGER(iwp) :: i !<
840	INTEGER(iwp) :: j !<
841	INTEGER(iwp) :: k !<
842	INTEGER(iwp) :: m !<
843	INTEGER(iwp) :: n !<
844
845	REAL(wp) :: exponent !<
846	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
847
848	REAL(wp), DIMENSION(0:ny) :: work !<
849
850	REAL(wp), DIMENSION(0:ny/2) :: sums_spectra_l !<
851
852	REAL(wp), DIMENSION(0:ny/2,100) :: sums_spectra !<
853
854	REAL(wp), DIMENSION(0:ny,nxl_yd:nxr_yd,nzb_yd:nzt_yd) :: ddd !<
855
856
857	!
858	!-- Exponent for geometric average
859	exponent = 1.0_wp / ( nx + 1.0_wp )
860
861	!
862	!-- Loop over all levels defined by the user
863	n = 1
864	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
865
866	k = comp_spectra_level(n)
867
868	!
869	!-- Calculate FFT only if the corresponding level is situated on this PE
870	IF ( k >= nzb_yd .AND. k <= nzt_yd ) THEN
871
872	DO i = nxl_yd, nxr_yd
873
874	work = ddd(0:ny,i,k)
875	CALL fft_y_1d( work, 'forward' )
876
877	ddd(0,i,k) = dy * work(0)**2
878	DO j = 1, ny/2
879	ddd(j,i,k) = dy * ( work(j)2 + work(ny+1-j)2 )
880	ENDDO
881
882	ENDDO
883
884	!
885	!-- Local sum and geometric average of these spectra
886	!-- (WARNING: no global sum should be performed, because floating
887	!-- point overflow may occur)
888	DO j = 0, ny/2
889
890	sums_spectra_l(j) = 1.0_wp
891	DO i = nxl_yd, nxr_yd
892	sums_spectra_l(j) = sums_spectra_l(j) * ddd(j,i,k)**exponent
893	ENDDO
894
895	ENDDO
896
897	ELSE
898
899	sums_spectra_l = 1.0_wp
900
901	ENDIF
902
903	!
904	!-- Global sum of spectra on PE0 (from where they are written on file)
905	sums_spectra(:,n) = 0.0_wp
906	#if defined( __parallel )
907	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
908	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), ny/2+1, &
909	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
910	#else
911	sums_spectra(:,n) = sums_spectra_l
912	#endif
913	!
914	!-- Normalize spectra by variance
915	sum_spec_dum = SUM( sums_spectra(1:ny/2,n) )
916	IF ( sum_spec_dum /= 0.0_wp ) THEN
917	sums_spectra(1:ny/2,n) = sums_spectra(1:ny/2,n) * &
918	var_d(k) / sum_spec_dum
919	ENDIF
920	n = n + 1
921
922	ENDDO
923	n = n - 1
924
925
926	IF ( myid == 0 ) THEN
927	!
928	!-- Sum of spectra for later averaging (see routine data_output_spectra)
929	DO j = 1, ny/2
930	DO k = 1, n
931	spectrum_y(j,k,m) = spectrum_y(j,k,m) + sums_spectra(j,k)
932	ENDDO
933	ENDDO
934
935	ENDIF
936
937	!
938	!-- n_sp_y is needed by data_output_spectra_y
939	n_sp_y = n
940
941	END SUBROUTINE calc_spectra_y
942
943	END MODULE spectra_mod

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