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source: palm/trunk/SOURCE/spectra_mod.f90 @ 3013

Last change on this file since 3013 was 2956, checked in by Giersch, 7 years ago
Bugfix of the allocation of spectrum_x and spectrum_y in case of restart runs, spectrum_x and spectrum_y are now treat as global restart data not local
Property svn:keywords set to `Id`
File size: 28.9 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 2956 2018-04-10 11:01:03Z Giersch $
27	! spectrum_x and spectrum_y will only be allocated if they are not allocated
28	! before (e.g. in case of restart runs)
29	!
30	! 2932 2018-03-26 09:39:22Z maronga
31	! renamed spectra_par to spectra_parameters
32	!
33	! 2841 2018-02-27 15:02:57Z knoop
34	! Bugfix: wrong placement of include 'mpif.h' corrected
35	!
36	! 2718 2018-01-02 08:49:38Z maronga
37	! Corrected "Former revisions" section
38	!
39	! 2696 2017-12-14 17:12:51Z kanani
40	! Change in file header (GPL part)
41	!
42	! 2216 2017-04-28 12:54:20Z suehring
43	!
44	! 2193 2017-03-22 04:21:28Z raasch
45	! Normalization of spectra output adjusted
46	!
47	! 2192 2017-03-22 04:14:10Z raasch
48	! bugfix for index bounds of arrays spectrum_x and spectrum_y
49	!
50	! 2000 2016-08-20 18:09:15Z knoop
51	! Forced header and separation lines into 80 columns
52	!
53	! 1960 2016-07-12 16:34:24Z suehring
54	! Additional default spectra for passive scalar
55	!
56	! 1833 2016-04-07 14:23:03Z raasch
57	! file renamed, reading the spectra_par NAMELIST moved from package_parin to
58	! here
59	!
60	! 1815 2016-04-06 13:49:59Z raasch
61	! bugfix: preprocessor directives included for the non-parallel case
62	!
63	! 1808 2016-04-05 19:44:00Z raasch
64	! MPI module used by default on all machines
65	!
66	! 1786 2016-03-08 05:49:27Z raasch
67	! routine is modularized, filename renamed from calc_spectra to spectrum,
68	! privious data module spectrum moved from modules.f90 to here,
69	! cpp-direktives for spectra removed, immediate return if no spectra levels are
70	! given
71	!
72	! 1682 2015-10-07 23:56:08Z knoop
73	! Code annotations made doxygen readable
74	!
75	! 1575 2015-03-27 09:56:27Z raasch
76	! adjustments for psolver-queries
77	!
78	! 1511 2014-12-16 15:54:16Z suehring
79	! Bugfix concerning spectra normalization
80	!
81	! 1431 2014-07-15 14:47:17Z suehring
82	! Wavenumber-integrated spectra coincide with respective variance.
83	!
84	! 1342 2014-03-26 17:04:47Z kanani
85	! REAL constants defined as wp-kinds
86	!
87	! 1324 2014-03-21 09:13:16Z suehring
88	! Bugfix: nzb_x, nzb_yd, nyn_x, nyn_x, nzt_x, nzt_yd belong to transpose_indices
89	!
90	! 1320 2014-03-20 08:40:49Z raasch
91	! ONLY-attribute added to USE-statements,
92	! kind-parameters added to all INTEGER and REAL declaration statements,
93	! kinds are defined in new module kinds,
94	! revision history before 2012 removed,
95	! comment fields (!:) to be used for variable explanations added to
96	! all variable declaration statements
97	!
98	! 1318 2014-03-17 13:35:16Z raasch
99	! module interfaces removed
100	!
101	! 1216 2013-08-26 09:31:42Z raasch
102	! resorting of array moved to separate routine resort_for_zx,
103	! one argument removed from the transpose_..d routines
104	!
105	! 1120 2013-04-05 15:11:35Z raasch
106	! bugfix: calls of fft_x\|y replaced by fft_x\|y_1d
107	!
108	! 1036 2012-10-22 13:43:42Z raasch
109	! code put under GPL (PALM 3.9)
110	!
111	! 1003 2012-09-14 14:35:53Z raasch
112	! adjustment of array tend for cases with unequal subdomain sizes removed
113	!
114	! Revision 1.1 2001/01/05 15:08:07 raasch
115	! Initial revision
116	!
117	!
118	! Description:
119	! ------------
120	!> Calculate horizontal spectra along x and y.
121	!> ATTENTION: 1d-decomposition along y still needs improvement, because in that
122	!> case the gridpoint number along z still depends on the PE number
123	!> because transpose_xz has to be used (and possibly also
124	!> transpose_zyd needs modification).
125	!------------------------------------------------------------------------------!
126	MODULE spectra_mod
127
128	USE kinds
129
130	PRIVATE
131
132	CHARACTER (LEN=2), DIMENSION(10) :: spectra_direction = 'x'
133	CHARACTER (LEN=10), DIMENSION(10) :: data_output_sp = ' '
134
135	INTEGER(iwp) :: average_count_sp = 0
136	INTEGER(iwp) :: dosp_time_count = 0
137	INTEGER(iwp) :: n_sp_x = 0, n_sp_y = 0
138
139	INTEGER(iwp) :: comp_spectra_level(100) = 999999
140
141	LOGICAL :: calculate_spectra = .FALSE. !< internal switch that spectra are calculated
142	LOGICAL :: spectra_initialized = .FALSE. !< internal switch that spectra related quantities are initialized
143
144	REAL(wp) :: averaging_interval_sp = 9999999.9_wp !< averaging interval for spectra output
145	REAL(wp) :: dt_dosp = 9999999.9_wp !< time interval for spectra output
146	REAL(wp) :: skip_time_dosp = 9999999.9_wp !< no output of spectra data before this interval has passed
147
148	REAL(wp), DIMENSION(:), ALLOCATABLE :: var_d
149
150	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: spectrum_x, spectrum_y
151
152	SAVE
153
154	INTERFACE calc_spectra
155	MODULE PROCEDURE calc_spectra
156	END INTERFACE calc_spectra
157
158	INTERFACE preprocess_spectra
159	MODULE PROCEDURE preprocess_spectra
160	END INTERFACE preprocess_spectra
161
162	INTERFACE calc_spectra_x
163	MODULE PROCEDURE calc_spectra_x
164	END INTERFACE calc_spectra_x
165
166	INTERFACE calc_spectra_y
167	MODULE PROCEDURE calc_spectra_y
168	END INTERFACE calc_spectra_y
169
170	INTERFACE spectra_check_parameters
171	MODULE PROCEDURE spectra_check_parameters
172	END INTERFACE spectra_check_parameters
173
174	INTERFACE spectra_header
175	MODULE PROCEDURE spectra_header
176	END INTERFACE spectra_header
177
178	INTERFACE spectra_init
179	MODULE PROCEDURE spectra_init
180	END INTERFACE spectra_init
181
182	INTERFACE spectra_parin
183	MODULE PROCEDURE spectra_parin
184	END INTERFACE spectra_parin
185
186	PUBLIC average_count_sp, averaging_interval_sp, calc_spectra, &
187	calculate_spectra, comp_spectra_level, data_output_sp, &
188	dosp_time_count, dt_dosp, n_sp_x, n_sp_y, plot_spectra_level, &
189	skip_time_dosp, spectra_check_parameters, spectra_direction, &
190	spectra_header, spectra_init, spectra_parin, spectrum_x, &
191	spectrum_y, var_d
192
193
194	CONTAINS
195
196	!------------------------------------------------------------------------------!
197	! Description:
198	! ------------
199	!> Parin for &spectra_par for calculating spectra
200	!------------------------------------------------------------------------------!
201	SUBROUTINE spectra_parin
202
203	USE control_parameters, &
204	ONLY: dt_data_output, message_string
205
206	IMPLICIT NONE
207
208	CHARACTER (LEN=80) :: line !< dummy string that contains the current &
209	!< line of the parameter file
210
211	NAMELIST /spectra_par/ averaging_interval_sp, comp_spectra_level, &
212	data_output_sp, dt_dosp, skip_time_dosp, &
213	spectra_direction
214
215	NAMELIST /spectra_parameters/ &
216	averaging_interval_sp, comp_spectra_level, &
217	data_output_sp, dt_dosp, skip_time_dosp, &
218	spectra_direction
219	!
220	!-- Position the namelist-file at the beginning (it was already opened in
221	!-- parin), search for the namelist-group of the package and position the
222	!-- file at this line.
223	line = ' '
224
225	!
226	!-- Try to find the spectra package
227	REWIND ( 11 )
228	line = ' '
229	DO WHILE ( INDEX( line, '&spectra_parameters' ) == 0 )
230	READ ( 11, '(A)', END=10 ) line
231	ENDDO
232	BACKSPACE ( 11 )
233
234	!
235	!-- Read namelist
236	READ ( 11, spectra_parameters )
237
238	!
239	!-- Default setting of dt_dosp here (instead of check_parameters), because
240	!-- its current value is needed in init_pegrid
241	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
242
243	!
244	!-- Set general switch that spectra shall be calculated
245	calculate_spectra = .TRUE.
246
247	GOTO 12
248	!
249	!-- Try to find the old namelist
250	10 REWIND ( 11 )
251	line = ' '
252	DO WHILE ( INDEX( line, '&spectra_par' ) == 0 )
253	READ ( 11, '(A)', END=12 ) line
254	ENDDO
255	BACKSPACE ( 11 )
256
257	!
258	!-- Read namelist
259	READ ( 11, spectra_par )
260
261
262	message_string = 'namelist spectra_par is deprecated and will be ' // &
263	'removed in near future. Please &use namelist ' // &
264	'spectra_parameters instead'
265	CALL message( 'spectra_parin', 'PA0487', 0, 1, 0, 6, 0 )
266	!
267	!-- Default setting of dt_dosp here (instead of check_parameters), because
268	!-- its current value is needed in init_pegrid
269	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
270
271	!
272	!-- Set general switch that spectra shall be calculated
273	calculate_spectra = .TRUE.
274
275
276	12 CONTINUE
277
278	END SUBROUTINE spectra_parin
279
280
281
282	!------------------------------------------------------------------------------!
283	! Description:
284	! ------------
285	!> Initialization of spectra related variables
286	!------------------------------------------------------------------------------!
287	SUBROUTINE spectra_init
288
289	USE indices, &
290	ONLY: nx, ny, nzb, nzt
291
292	IMPLICIT NONE
293
294	IF ( spectra_initialized ) RETURN
295
296	IF ( dt_dosp /= 9999999.9_wp ) THEN
297
298	IF ( .NOT. ALLOCATED( spectrum_x ) ) THEN
299	ALLOCATE( spectrum_x( 1:nx/2, 1:100, 1:10 ) )
300	spectrum_x = 0.0_wp
301	ENDIF
302
303	IF ( .NOT. ALLOCATED( spectrum_y ) ) THEN
304	ALLOCATE( spectrum_y( 1:ny/2, 1:100, 1:10 ) )
305	spectrum_y = 0.0_wp
306	ENDIF
307
308	ALLOCATE( var_d(nzb:nzt+1) )
309	var_d = 0.0_wp
310	ENDIF
311
312	spectra_initialized = .TRUE.
313
314	END SUBROUTINE spectra_init
315
316
317
318	!------------------------------------------------------------------------------!
319	! Description:
320	! ------------
321	!> Check spectra related quantities
322	!------------------------------------------------------------------------------!
323	SUBROUTINE spectra_check_parameters
324
325	USE control_parameters, &
326	ONLY: averaging_interval, message_string, skip_time_data_output
327
328	IMPLICIT NONE
329
330	!
331	!-- Check the average interval
332	IF ( averaging_interval_sp == 9999999.9_wp ) THEN
333	averaging_interval_sp = averaging_interval
334	ENDIF
335
336	IF ( averaging_interval_sp > dt_dosp ) THEN
337	WRITE( message_string, * ) 'averaging_interval_sp = ', &
338	averaging_interval_sp, ' must be <= dt_dosp = ', dt_dosp
339	CALL message( 'spectra_check_parameters', 'PA0087', 1, 2, 0, 6, 0 )
340	ENDIF
341
342	!
343	!-- Set the default skip time interval for data output, if necessary
344	IF ( skip_time_dosp == 9999999.9_wp ) &
345	skip_time_dosp = skip_time_data_output
346
347	END SUBROUTINE spectra_check_parameters
348
349
350
351	!------------------------------------------------------------------------------!
352	! Description:
353	! ------------
354	!> Header output for spectra
355	!>
356	!> @todo Output of netcdf data format and compression level
357	!------------------------------------------------------------------------------!
358	SUBROUTINE spectra_header ( io )
359
360	USE control_parameters, &
361	ONLY: dt_averaging_input_pr
362
363	! USE netcdf_interface, &
364	! ONLY: netcdf_data_format_string, netcdf_deflate
365
366	IMPLICIT NONE
367
368	CHARACTER (LEN=40) :: output_format !< internal string
369
370	INTEGER(iwp) :: i !< internal counter
371	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
372
373	!
374	!-- Spectra output
375	IF ( dt_dosp /= 9999999.9_wp ) THEN
376	WRITE ( io, 1 )
377
378	! output_format = netcdf_data_format_string
379	! IF ( netcdf_deflate == 0 ) THEN
380	! WRITE ( io, 2 ) output_format
381	! ELSE
382	! WRITE ( io, 3 ) TRIM( output_format ), netcdf_deflate
383	! ENDIF
384	WRITE ( io, 2 ) 'see profiles or other quantities'
385	WRITE ( io, 4 ) dt_dosp
386	IF ( skip_time_dosp /= 0.0_wp ) WRITE ( io, 5 ) skip_time_dosp
387	WRITE ( io, 6 ) ( data_output_sp(i), i = 1,10 ), &
388	( spectra_direction(i), i = 1,10 ), &
389	( comp_spectra_level(i), i = 1,100 ), &
390	averaging_interval_sp, dt_averaging_input_pr
391	ENDIF
392
393	1 FORMAT (' Spectra:')
394	2 FORMAT (' Output format: ',A/)
395	3 FORMAT (' Output format: ',A, ' compressed with level: ',I1/)
396	4 FORMAT (' Output every ',F7.1,' s'/)
397	5 FORMAT (' No output during initial ',F8.2,' s')
398	6 FORMAT (' Arrays: ', 10(A5,',')/ &
399	' Directions: ', 10(A5,',')/ &
400	' height levels k = ', 20(I3,',')/ &
401	' ', 20(I3,',')/ &
402	' ', 20(I3,',')/ &
403	' ', 20(I3,',')/ &
404	' ', 19(I3,','),I3,'.'/ &
405	' Time averaged over ', F7.1, ' s,' / &
406	' Profiles for the time averaging are taken every ', &
407	F6.1,' s')
408
409	END SUBROUTINE spectra_header
410
411
412
413	SUBROUTINE calc_spectra
414
415	USE arrays_3d, &
416	ONLY: d, tend
417
418	USE control_parameters, &
419	ONLY: bc_lr_cyc, bc_ns_cyc, message_string, psolver
420
421	USE cpulog, &
422	ONLY: cpu_log, log_point
423
424	USE fft_xy, &
425	ONLY: fft_init
426
427	USE indices, &
428	ONLY: nxl, nxr, nyn, nys, nzb, nzt
429
430	USE kinds
431
432	USE pegrid, &
433	ONLY: myid, pdims
434
435	IMPLICIT NONE
436
437	INTEGER(iwp) :: m !<
438	INTEGER(iwp) :: pr !<
439
440
441	!
442	!-- Check if user gave any levels for spectra to be calculated
443	IF ( comp_spectra_level(1) == 999999 ) RETURN
444
445	CALL cpu_log( log_point(30), 'calc_spectra', 'start' )
446
447	!
448	!-- Initialize spectra related quantities
449	CALL spectra_init
450
451	!
452	!-- Initialize ffts
453	CALL fft_init
454
455	!
456	!-- Reallocate array d in required size
457	IF ( psolver(1:9) == 'multigrid' ) THEN
458	DEALLOCATE( d )
459	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr) )
460	ENDIF
461
462	m = 1
463	DO WHILE ( data_output_sp(m) /= ' ' .AND. m <= 10 )
464	!
465	!-- Transposition from z --> x ( y --> x in case of a 1d-decomposition
466	!-- along x)
467	IF ( INDEX( spectra_direction(m), 'x' ) /= 0 ) THEN
468
469	!
470	!-- Calculation of spectra works for cyclic boundary conditions only
471	IF ( .NOT. bc_lr_cyc ) THEN
472
473	message_string = 'non-cyclic lateral boundaries along x do'// &
474	' not & allow calculation of spectra along x'
475	CALL message( 'calc_spectra', 'PA0160', 1, 2, 0, 6, 0 )
476	ENDIF
477
478	CALL preprocess_spectra( m, pr )
479
480	#if defined( __parallel )
481	IF ( pdims(2) /= 1 ) THEN
482	CALL resort_for_zx( d, tend )
483	CALL transpose_zx( tend, d )
484	ELSE
485	CALL transpose_yxd( d, d )
486	ENDIF
487	CALL calc_spectra_x( d, pr, m )
488	#else
489	message_string = 'sorry, calculation of spectra in non paral' // &
490	'lel mode& is still not realized'
491	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
492	#endif
493
494	ENDIF
495
496	!
497	!-- Transposition from z --> y (d is rearranged only in case of a
498	!-- 1d-decomposition along x)
499	IF ( INDEX( spectra_direction(m), 'y' ) /= 0 ) THEN
500
501	!
502	!-- Calculation of spectra works for cyclic boundary conditions only
503	IF ( .NOT. bc_ns_cyc ) THEN
504	IF ( myid == 0 ) THEN
505	message_string = 'non-cyclic lateral boundaries along y' // &
506	' do not & allow calculation of spectr' // &
507	'a along y'
508	CALL message( 'calc_spectra', 'PA0162', 1, 2, 0, 6, 0 )
509	ENDIF
510	CALL local_stop
511	ENDIF
512
513	CALL preprocess_spectra( m, pr )
514
515	#if defined( __parallel )
516	CALL transpose_zyd( d, d )
517	CALL calc_spectra_y( d, pr, m )
518	#else
519	message_string = 'sorry, calculation of spectra in non paral' // &
520	'lel mode& is still not realized'
521	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
522	#endif
523
524	ENDIF
525
526	!
527	!-- Increase counter for next spectrum
528	m = m + 1
529
530	ENDDO
531
532	!
533	!-- Increase counter for averaging process in routine plot_spectra
534	average_count_sp = average_count_sp + 1
535
536	CALL cpu_log( log_point(30), 'calc_spectra', 'stop' )
537
538	END SUBROUTINE calc_spectra
539
540
541	!------------------------------------------------------------------------------!
542	! Description:
543	! ------------
544	!> @todo Missing subroutine description.
545	!------------------------------------------------------------------------------!
546	SUBROUTINE preprocess_spectra( m, pr )
547
548	USE arrays_3d, &
549	ONLY: d, pt, q, s, u, v, w
550
551	USE indices, &
552	ONLY: ngp_2dh, nxl, nxr, nyn, nys, nzb, nzt
553
554	USE kinds
555
556	#if defined( __parallel )
557	#if !defined( __mpifh )
558	USE MPI
559	#endif
560	#endif
561
562	USE pegrid, &
563	ONLY: collective_wait, comm2d, ierr
564
565	USE statistics, &
566	ONLY: hom
567
568
569	IMPLICIT NONE
570
571	#if defined( __parallel )
572	#if defined( __mpifh )
573	INCLUDE "mpif.h"
574	#endif
575	#endif
576
577	INTEGER(iwp) :: i !<
578	INTEGER(iwp) :: j !<
579	INTEGER(iwp) :: k !<
580	INTEGER(iwp) :: m !<
581	INTEGER(iwp) :: pr !<
582
583	REAL(wp), DIMENSION(nzb:nzt+1) :: var_d_l
584
585	SELECT CASE ( TRIM( data_output_sp(m) ) )
586
587	CASE ( 'u' )
588	pr = 1
589	d(nzb+1:nzt,nys:nyn,nxl:nxr) = u(nzb+1:nzt,nys:nyn,nxl:nxr)
590
591	CASE ( 'v' )
592	pr = 2
593	d(nzb+1:nzt,nys:nyn,nxl:nxr) = v(nzb+1:nzt,nys:nyn,nxl:nxr)
594
595	CASE ( 'w' )
596	pr = 3
597	d(nzb+1:nzt,nys:nyn,nxl:nxr) = w(nzb+1:nzt,nys:nyn,nxl:nxr)
598
599	CASE ( 'pt' )
600	pr = 4
601	d(nzb+1:nzt,nys:nyn,nxl:nxr) = pt(nzb+1:nzt,nys:nyn,nxl:nxr)
602
603	CASE ( 'q' )
604	pr = 41
605	d(nzb+1:nzt,nys:nyn,nxl:nxr) = q(nzb+1:nzt,nys:nyn,nxl:nxr)
606
607	CASE ( 's' )
608	pr = 117
609	d(nzb+1:nzt,nys:nyn,nxl:nxr) = s(nzb+1:nzt,nys:nyn,nxl:nxr)
610
611	CASE DEFAULT
612	!
613	!-- The DEFAULT case is reached either if the parameter data_output_sp(m)
614	!-- contains a wrong character string or if the user has coded a special
615	!-- case in the user interface. There, the subroutine user_spectra
616	!-- checks which of these two conditions applies.
617	CALL user_spectra( 'preprocess', m, pr )
618
619	END SELECT
620
621	!
622	!-- Subtract horizontal mean from the array, for which spectra have to be
623	!-- calculated. Moreover, calculate variance of the respective quantitiy,
624	!-- later used for normalizing spectra output.
625	var_d_l(:) = 0.0_wp
626	DO i = nxl, nxr
627	DO j = nys, nyn
628	DO k = nzb+1, nzt
629	d(k,j,i) = d(k,j,i) - hom(k,1,pr,0)
630	var_d_l(k) = var_d_l(k) + d(k,j,i) * d(k,j,i)
631	ENDDO
632	ENDDO
633	ENDDO
634	!
635	!-- Compute total variance from local variances
636	var_d(:) = 0.0_wp
637	#if defined( __parallel )
638	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
639	CALL MPI_ALLREDUCE( var_d_l(0), var_d(0), nzt+1-nzb, MPI_REAL, MPI_SUM, &
640	comm2d, ierr )
641	#else
642	var_d(:) = var_d_l(:)
643	#endif
644	var_d(:) = var_d(:) / ngp_2dh(0)
645
646	END SUBROUTINE preprocess_spectra
647
648
649	!------------------------------------------------------------------------------!
650	! Description:
651	! ------------
652	!> @todo Missing subroutine description.
653	!------------------------------------------------------------------------------!
654	SUBROUTINE calc_spectra_x( ddd, pr, m )
655
656	USE control_parameters, &
657	ONLY: fft_method
658
659	USE fft_xy, &
660	ONLY: fft_x_1d
661
662	USE grid_variables, &
663	ONLY: dx
664
665	USE indices, &
666	ONLY: nx, ny
667
668	USE kinds
669
670	#if defined( __parallel )
671	#if !defined( __mpifh )
672	USE MPI
673	#endif
674	#endif
675
676	USE pegrid, &
677	ONLY: comm2d, ierr, myid
678
679	USE transpose_indices, &
680	ONLY: nyn_x, nys_x, nzb_x, nzt_x
681
682
683	IMPLICIT NONE
684
685	#if defined( __parallel )
686	#if defined( __mpifh )
687	INCLUDE "mpif.h"
688	#endif
689	#endif
690
691	INTEGER(iwp) :: i !<
692	INTEGER(iwp) :: ishape(1) !<
693	INTEGER(iwp) :: j !<
694	INTEGER(iwp) :: k !<
695	INTEGER(iwp) :: m !<
696	INTEGER(iwp) :: n !<
697	INTEGER(iwp) :: pr !<
698
699	REAL(wp) :: exponent !<
700	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
701
702	REAL(wp), DIMENSION(0:nx) :: work !<
703
704	REAL(wp), DIMENSION(0:nx/2) :: sums_spectra_l !<
705
706	REAL(wp), DIMENSION(0:nx/2,100) :: sums_spectra !<
707
708	REAL(wp), DIMENSION(0:nx,nys_x:nyn_x,nzb_x:nzt_x) :: ddd !<
709
710	!
711	!-- Exponent for geometric average
712	exponent = 1.0_wp / ( ny + 1.0_wp )
713
714	!
715	!-- Loop over all levels defined by the user
716	n = 1
717	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
718
719	k = comp_spectra_level(n)
720
721	!
722	!-- Calculate FFT only if the corresponding level is situated on this PE
723	IF ( k >= nzb_x .AND. k <= nzt_x ) THEN
724
725	DO j = nys_x, nyn_x
726
727	work = ddd(0:nx,j,k)
728	CALL fft_x_1d( work, 'forward' )
729
730	ddd(0,j,k) = dx * work(0)**2
731	DO i = 1, nx/2
732	ddd(i,j,k) = dx * ( work(i)2 + work(nx+1-i)2 )
733	ENDDO
734
735	ENDDO
736
737	!
738	!-- Local sum and geometric average of these spectra
739	!-- (WARNING: no global sum should be performed, because floating
740	!-- point overflow may occur)
741	DO i = 0, nx/2
742
743	sums_spectra_l(i) = 1.0_wp
744	DO j = nys_x, nyn_x
745	sums_spectra_l(i) = sums_spectra_l(i) * ddd(i,j,k)**exponent
746	ENDDO
747
748	ENDDO
749
750	ELSE
751
752	sums_spectra_l = 1.0_wp
753
754	ENDIF
755
756	!
757	!-- Global sum of spectra on PE0 (from where they are written on file)
758	sums_spectra(:,n) = 0.0_wp
759	#if defined( __parallel )
760	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
761	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), nx/2+1, &
762	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
763	#else
764	sums_spectra(:,n) = sums_spectra_l
765	#endif
766	!
767	!-- Normalize spectra by variance
768	sum_spec_dum = SUM( sums_spectra(1:nx/2,n) )
769
770	IF ( sum_spec_dum /= 0.0_wp ) THEN
771	sums_spectra(1:nx/2,n) = sums_spectra(1:nx/2,n) * &
772	var_d(k) / sum_spec_dum
773	ENDIF
774	n = n + 1
775
776	ENDDO
777	n = n - 1
778
779	IF ( myid == 0 ) THEN
780	!
781	!-- Sum of spectra for later averaging (see routine data_output_spectra)
782	DO i = 1, nx/2
783	DO k = 1, n
784	spectrum_x(i,k,m) = spectrum_x(i,k,m) + sums_spectra(i,k)
785	ENDDO
786	ENDDO
787
788	ENDIF
789	!
790	!-- n_sp_x is needed by data_output_spectra_x
791	n_sp_x = n
792
793	END SUBROUTINE calc_spectra_x
794
795
796	!------------------------------------------------------------------------------!
797	! Description:
798	! ------------
799	!> @todo Missing subroutine description.
800	!------------------------------------------------------------------------------!
801	SUBROUTINE calc_spectra_y( ddd, pr, m )
802
803	USE control_parameters, &
804	ONLY: fft_method
805
806	USE fft_xy, &
807	ONLY: fft_y_1d
808
809	USE grid_variables, &
810	ONLY: dy
811
812	USE indices, &
813	ONLY: nx, ny
814
815	USE kinds
816
817	#if defined( __parallel )
818	#if !defined( __mpifh )
819	USE MPI
820	#endif
821	#endif
822
823	USE pegrid, &
824	ONLY: comm2d, ierr, myid
825
826	USE transpose_indices, &
827	ONLY: nxl_yd, nxr_yd, nzb_yd, nzt_yd
828
829
830	IMPLICIT NONE
831
832	#if defined( __parallel )
833	#if defined( __mpifh )
834	INCLUDE "mpif.h"
835	#endif
836	#endif
837
838	INTEGER(iwp) :: i !<
839	INTEGER(iwp) :: j !<
840	INTEGER(iwp) :: jshape(1) !<
841	INTEGER(iwp) :: k !<
842	INTEGER(iwp) :: m !<
843	INTEGER(iwp) :: n !<
844	INTEGER(iwp) :: pr !<
845
846	REAL(wp) :: exponent !<
847	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
848
849	REAL(wp), DIMENSION(0:ny) :: work !<
850
851	REAL(wp), DIMENSION(0:ny/2) :: sums_spectra_l !<
852
853	REAL(wp), DIMENSION(0:ny/2,100) :: sums_spectra !<
854
855	REAL(wp), DIMENSION(0:ny,nxl_yd:nxr_yd,nzb_yd:nzt_yd) :: ddd !<
856
857
858	!
859	!-- Exponent for geometric average
860	exponent = 1.0_wp / ( nx + 1.0_wp )
861
862	!
863	!-- Loop over all levels defined by the user
864	n = 1
865	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
866
867	k = comp_spectra_level(n)
868
869	!
870	!-- Calculate FFT only if the corresponding level is situated on this PE
871	IF ( k >= nzb_yd .AND. k <= nzt_yd ) THEN
872
873	DO i = nxl_yd, nxr_yd
874
875	work = ddd(0:ny,i,k)
876	CALL fft_y_1d( work, 'forward' )
877
878	ddd(0,i,k) = dy * work(0)**2
879	DO j = 1, ny/2
880	ddd(j,i,k) = dy * ( work(j)2 + work(ny+1-j)2 )
881	ENDDO
882
883	ENDDO
884
885	!
886	!-- Local sum and geometric average of these spectra
887	!-- (WARNING: no global sum should be performed, because floating
888	!-- point overflow may occur)
889	DO j = 0, ny/2
890
891	sums_spectra_l(j) = 1.0_wp
892	DO i = nxl_yd, nxr_yd
893	sums_spectra_l(j) = sums_spectra_l(j) * ddd(j,i,k)**exponent
894	ENDDO
895
896	ENDDO
897
898	ELSE
899
900	sums_spectra_l = 1.0_wp
901
902	ENDIF
903
904	!
905	!-- Global sum of spectra on PE0 (from where they are written on file)
906	sums_spectra(:,n) = 0.0_wp
907	#if defined( __parallel )
908	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
909	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), ny/2+1, &
910	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
911	#else
912	sums_spectra(:,n) = sums_spectra_l
913	#endif
914	!
915	!-- Normalize spectra by variance
916	sum_spec_dum = SUM( sums_spectra(1:ny/2,n) )
917	IF ( sum_spec_dum /= 0.0_wp ) THEN
918	sums_spectra(1:ny/2,n) = sums_spectra(1:ny/2,n) * &
919	var_d(k) / sum_spec_dum
920	ENDIF
921	n = n + 1
922
923	ENDDO
924	n = n - 1
925
926
927	IF ( myid == 0 ) THEN
928	!
929	!-- Sum of spectra for later averaging (see routine data_output_spectra)
930	DO j = 1, ny/2
931	DO k = 1, n
932	spectrum_y(j,k,m) = spectrum_y(j,k,m) + sums_spectra(j,k)
933	ENDDO
934	ENDDO
935
936	ENDIF
937
938	!
939	!-- n_sp_y is needed by data_output_spectra_y
940	n_sp_y = n
941
942	END SUBROUTINE calc_spectra_y
943
944	END MODULE spectra_mod

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