Home

Context Navigation

source: palm/trunk/SOURCE/nudging.f90 @ 1357

Last change on this file since 1357 was 1356, checked in by heinze, 11 years ago
last commit documented
Property svn:keywords set to `Id`
File size: 15.4 KB

Rev	Line
[1239]	1	MODULE nudge_mod
	2
	3	!--------------------------------------------------------------------------------!
	4	! This file is part of PALM.
	5	!
	6	! PALM is free software: you can redistribute it and/or modify it under the terms
	7	! of the GNU General Public License as published by the Free Software Foundation,
	8	! either version 3 of the License, or (at your option) any later 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	!
[1310]	17	! Copyright 1997-2014 Leibniz Universitaet Hannover
[1239]	18	!--------------------------------------------------------------------------------!
	19	!
	20	! Current revisions:
	21	! ------------------
[1354]	22	!
[1356]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: nudging.f90 1356 2014-04-10 10:24:12Z witha $
	27	!
[1356]	28	! 1355 2014-04-10 10:21:29Z heinze
	29	! Error message specified.
	30	!
[1354]	31	! 1353 2014-04-08 15:21:23Z heinze
	32	! REAL constants provided with KIND-attribute
	33	!
[1321]	34	! 1320 2014-03-20 08:40:49Z raasch
[1320]	35	! ONLY-attribute added to USE-statements,
	36	! kind-parameters added to all INTEGER and REAL declaration statements,
	37	! kinds are defined in new module kinds,
	38	! old module precision_kind is removed,
	39	! revision history before 2012 removed,
	40	! comment fields (!:) to be used for variable explanations added to
	41	! all variable declaration statements
[1239]	42	!
[1319]	43	! 1318 2014-03-17 13:35:16Z raasch
	44	! module interfaces removed
	45	!
[1269]	46	! 1268 2013-12-12 09:47:53Z heinze
	47	! bugfix: argument of calc_mean_profile corrected
	48	!
[1252]	49	! 1251 2013-11-07 08:14:30Z heinze
	50	! bugfix: calculate dtm and dtp also in vector version
	51	!
[1250]	52	! 1249 2013-11-06 10:45:47Z heinze
	53	! remove call of user module
	54	! reformatting
	55	!
[1242]	56	! 1241 2013-10-30 11:36:58Z heinze
	57	! Initial revision
[1239]	58	!
	59	! Description:
	60	! ------------
	61	! Nudges u, v, pt and q to given profiles on a relaxation timescale tnudge.
	62	! Profiles are read in from NUDGIN_DATA. Code is based on Neggers et al. (2012)
	63	! and also part of DALES and UCLA-LES.
	64	!--------------------------------------------------------------------------------!
	65
	66	PRIVATE
	67	PUBLIC init_nudge, nudge
	68	SAVE
	69
	70	INTERFACE nudge
	71	MODULE PROCEDURE nudge
	72	MODULE PROCEDURE nudge_ij
	73	END INTERFACE nudge
	74
	75	CONTAINS
	76
	77	SUBROUTINE init_nudge
	78
[1320]	79	USE arrays_3d, &
	80	ONLY: ptnudge, qnudge, timenudge, tnudge, unudge, vnudge, wnudge, &
	81	zu
[1239]	82
[1320]	83	USE control_parameters, &
	84	ONLY: dt_3d, lptnudge, lqnudge, lunudge, lvnudge, lwnudge, &
	85	message_string, ntnudge
	86
	87	USE indices, &
	88	ONLY: nzb, nzt
	89
	90	USE kinds
	91
[1239]	92	IMPLICIT NONE
	93
	94
[1320]	95	INTEGER(iwp) :: finput = 90 !:
	96	INTEGER(iwp) :: ierrn !:
	97	INTEGER(iwp) :: k !:
	98	INTEGER(iwp) :: t !:
[1239]	99
[1320]	100	CHARACTER(1) :: hash !:
	101
	102	REAL(wp) :: highheight !:
	103	REAL(wp) :: highqnudge !:
	104	REAL(wp) :: highptnudge !:
	105	REAL(wp) :: highunudge !:
	106	REAL(wp) :: highvnudge !:
	107	REAL(wp) :: highwnudge !:
	108	REAL(wp) :: hightnudge !:
	109
	110	REAL(wp) :: lowheight !:
	111	REAL(wp) :: lowqnudge !:
	112	REAL(wp) :: lowptnudge !:
	113	REAL(wp) :: lowunudge !:
	114	REAL(wp) :: lowvnudge !:
	115	REAL(wp) :: lowwnudge !:
	116	REAL(wp) :: lowtnudge !:
	117
	118	REAL(wp) :: fac !:
	119
[1239]	120	ALLOCATE( ptnudge(nzb:nzt+1,1:ntnudge), qnudge(nzb:nzt+1,1:ntnudge), &
	121	tnudge(nzb:nzt+1,1:ntnudge), unudge(nzb:nzt+1,1:ntnudge), &
	122	vnudge(nzb:nzt+1,1:ntnudge), wnudge(nzb:nzt+1,1:ntnudge) )
	123
	124	ALLOCATE( timenudge(0:ntnudge) )
	125
	126
[1353]	127	ptnudge = 0.0_wp; qnudge = 0.0_wp; tnudge = 0.0_wp; unudge = 0.0_wp
	128	vnudge = 0.0_wp; wnudge = 0.0_wp; timenudge = 0.0_wp
[1239]	129
	130	t = 0
[1249]	131	OPEN ( finput, FILE='NUDGING_DATA', STATUS='OLD', &
	132	FORM='FORMATTED', IOSTAT=ierrn )
[1239]	133
[1249]	134	IF ( ierrn /= 0 ) THEN
[1239]	135	message_string = 'file NUDGING_DATA does not exist'
	136	CALL message( 'nudging', 'PA0365', 1, 2, 0, 6, 0 )
	137	ENDIF
	138
	139	ierrn = 0
	140
	141	rloop:DO
	142	t = t + 1
	143	hash = "#"
[1320]	144	ierrn = 1 ! not zero
[1239]	145	!
	146	!-- Search for the next line consisting of "# time",
	147	!-- from there onwards the profiles will be read
	148	DO WHILE ( .NOT. ( hash == "#" .AND. ierrn == 0 ) )
	149
[1249]	150	READ ( finput, *, IOSTAT=ierrn ) hash, timenudge(t)
	151	IF ( ierrn < 0 ) EXIT rloop
[1239]	152
	153	ENDDO
	154
	155	ierrn = 0
[1249]	156	READ ( finput, *, IOSTAT=ierrn ) lowheight, lowtnudge, lowunudge, &
	157	lowvnudge, lowwnudge , lowptnudge, &
	158	lowqnudge
[1239]	159
[1249]	160	IF ( ierrn /= 0 ) THEN
[1239]	161	message_string = 'errors in file NUDGING_DATA'
	162	CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 )
	163	ENDIF
	164
	165	ierrn = 0
[1249]	166	READ ( finput, *, IOSTAT=ierrn ) highheight, hightnudge, highunudge, &
	167	highvnudge, highwnudge , highptnudge, &
	168	highqnudge
[1239]	169
[1249]	170	IF ( ierrn /= 0 ) THEN
[1239]	171	message_string = 'errors in file NUDGING_DATA'
	172	CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 )
	173	ENDIF
	174
	175	DO k = nzb, nzt+1
[1249]	176	IF ( highheight < zu(k) ) THEN
[1239]	177	lowheight = highheight
	178	lowtnudge = hightnudge
	179	lowunudge = highunudge
	180	lowvnudge = highvnudge
	181	lowwnudge = highwnudge
	182	lowptnudge = highptnudge
	183	lowqnudge = highqnudge
	184
	185	ierrn = 0
[1249]	186	READ ( finput, *, IOSTAT=ierrn ) highheight , hightnudge , &
	187	highunudge , highvnudge , &
	188	highwnudge , highptnudge, &
	189	highqnudge
	190	IF (ierrn /= 0 ) THEN
[1355]	191	WRITE( message_string, * ) 'zu(nzt+1) = ', zu(nzt+1), 'm is ',&
	192	'higher than the maximum height in NUDING_DATA which ', &
	193	'is ', lowheight, 'm. Interpolation on PALM ', &
	194	'grid is not possible.'
	195	CALL message( 'nudging', 'PA0364', 1, 2, 0, 6, 0 )
[1239]	196	ENDIF
	197	ENDIF
	198
	199	!
	200	!-- Interpolation of prescribed profiles in space
	201
[1249]	202	fac = ( highheight - zu(k) ) / ( highheight - lowheight )
[1239]	203
[1353]	204	tnudge(k,t) = fac * lowtnudge + ( 1.0_wp - fac ) * hightnudge
	205	unudge(k,t) = fac * lowunudge + ( 1.0_wp - fac ) * highunudge
	206	vnudge(k,t) = fac * lowvnudge + ( 1.0_wp - fac ) * highvnudge
	207	wnudge(k,t) = fac * lowwnudge + ( 1.0_wp - fac ) * highwnudge
	208	ptnudge(k,t) = fac * lowptnudge + ( 1.0_wp - fac ) * highptnudge
	209	qnudge(k,t) = fac * lowqnudge + ( 1.0_wp - fac ) * highqnudge
[1239]	210	ENDDO
	211
	212	ENDDO rloop
	213
[1249]	214	CLOSE ( finput )
[1239]	215
	216	!
	217	!-- Prevent nudging if nudging profiles exhibt too small values
[1241]	218	!-- not used so far
[1353]	219	lptnudge = ANY( ABS( ptnudge ) > 1.0e-8_wp )
	220	lqnudge = ANY( ABS( qnudge ) > 1.0e-8_wp )
	221	lunudge = ANY( ABS( unudge ) > 1.0e-8_wp )
	222	lvnudge = ANY( ABS( vnudge ) > 1.0e-8_wp )
	223	lwnudge = ANY( ABS( wnudge ) > 1.0e-8_wp )
[1239]	224
	225	END SUBROUTINE init_nudge
	226
	227	!------------------------------------------------------------------------------!
	228	! Call for all grid points
	229	!------------------------------------------------------------------------------!
	230	SUBROUTINE nudge ( time, prog_var )
	231
[1320]	232	USE arrays_3d, &
	233	ONLY: pt, ptnudge, q, qnudge, tend, timenudge, tnudge, u, unudge, &
	234	v, vnudge
[1239]	235
[1320]	236	USE buoyancy_mod, &
	237	ONLY: calc_mean_profile
	238
	239	USE control_parameters, &
	240	ONLY: dt_3d, message_string
	241
	242	USE indices, &
	243	ONLY: nxl, nxr, nys, nyn, nzb, nzb_u_inner, nzt
	244
	245	USE kinds, &
	246	ONLY: iwp, wp
	247
	248	USE statistics, &
	249	ONLY: hom
	250
[1239]	251	IMPLICIT NONE
	252
[1320]	253	CHARACTER (LEN=*) :: prog_var !:
[1239]	254
[1320]	255	REAL(wp) :: currtnudge !:
	256	REAL(wp) :: dtm !:
	257	REAL(wp) :: dtp !:
	258	REAL(wp) :: time !:
[1239]	259
[1320]	260	INTEGER(iwp) :: i !:
	261	INTEGER(iwp) :: j !:
	262	INTEGER(iwp) :: k !:
	263	INTEGER(iwp) :: t !:
[1239]	264
	265
[1251]	266	t = 1
	267	DO WHILE ( time > timenudge(t) )
	268	t = t+1
	269	ENDDO
	270	IF ( time /= timenudge(1) ) THEN
	271	t = t-1
	272	ENDIF
	273
	274	dtm = ( time - timenudge(t) ) / ( timenudge(t+1) - timenudge(t) )
	275	dtp = ( timenudge(t+1) - time ) / ( timenudge(t+1) - timenudge(t) )
	276
[1239]	277	SELECT CASE ( prog_var )
	278
	279	CASE ( 'u' )
	280
	281	CALL calc_mean_profile( u, 1, 'nudging' )
	282
	283	DO i = nxl, nxr
	284	DO j = nys, nyn
	285	DO k = nzb_u_inner(j,i)+1, nzt
	286
	287	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + &
	288	tnudge(k,t+1) * dtm )
	289
	290
	291	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,1,0) - &
	292	( unudge(k,t) * dtp + &
	293	unudge(k,t+1) * dtm ) ) / currtnudge
	294	ENDDO
	295	ENDDO
	296	ENDDO
	297
	298	CASE ( 'v' )
	299
	300	CALL calc_mean_profile( v, 2, 'nudging' )
	301
	302	DO i = nxl, nxr
	303	DO j = nys, nyn
	304	DO k = nzb_u_inner(j,i)+1, nzt
	305
	306	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + &
	307	tnudge(k,t+1) * dtm )
	308
	309
	310	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,2,0) - &
	311	( vnudge(k,t) * dtp + &
	312	vnudge(k,t+1) * dtm ) ) / currtnudge
	313	ENDDO
	314	ENDDO
	315	ENDDO
	316
	317	CASE ( 'pt' )
	318
[1268]	319	CALL calc_mean_profile( pt, 4, 'nudging' )
[1239]	320
	321	DO i = nxl, nxr
	322	DO j = nys, nyn
	323	DO k = nzb_u_inner(j,i)+1, nzt
	324
	325	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + &
	326	tnudge(k,t+1) * dtm )
	327
	328
	329	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,4,0) - &
	330	( ptnudge(k,t) * dtp + &
	331	ptnudge(k,t+1) * dtm ) ) / currtnudge
	332	ENDDO
	333	ENDDO
	334	ENDDO
	335
	336	CASE ( 'q' )
	337
[1268]	338	CALL calc_mean_profile( q, 41, 'nudging' )
[1239]	339
	340	DO i = nxl, nxr
	341	DO j = nys, nyn
	342	DO k = nzb_u_inner(j,i)+1, nzt
	343
	344	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + &
	345	tnudge(k,t+1) * dtm )
	346
	347
	348	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,41,0) - &
	349	( qnudge(k,t) * dtp + &
	350	qnudge(k,t+1) * dtm ) ) / currtnudge
	351	ENDDO
	352	ENDDO
	353	ENDDO
	354
	355	CASE DEFAULT
	356	message_string = 'unknown prognostic variable "' // prog_var // '"'
	357	CALL message( 'nudge', 'PA0367', 1, 2, 0, 6, 0 )
	358
	359	END SELECT
	360
	361	END SUBROUTINE nudge
	362
	363
	364	!------------------------------------------------------------------------------!
	365	! Call for grid point i,j
	366	!------------------------------------------------------------------------------!
	367
	368	SUBROUTINE nudge_ij( i, j, time, prog_var )
	369
[1320]	370	USE arrays_3d, &
	371	ONLY: pt, ptnudge, q, qnudge, tend, timenudge, tnudge, u, unudge, &
	372	v, vnudge
[1239]	373
[1320]	374	USE buoyancy_mod, &
	375	ONLY: calc_mean_profile
	376
	377	USE control_parameters, &
	378	ONLY: dt_3d, message_string
	379
	380	USE indices, &
	381	ONLY: nxl, nxr, nys, nyn, nzb, nzb_u_inner, nzt
	382
	383	USE kinds, &
	384	ONLY: iwp, wp
	385
	386	USE statistics, &
	387	ONLY: hom
	388
[1239]	389	IMPLICIT NONE
	390
	391
[1320]	392	CHARACTER (LEN=*) :: prog_var !:
[1239]	393
[1320]	394	REAL(wp) :: currtnudge !:
	395	REAL(wp) :: dtm !:
	396	REAL(wp) :: dtp !:
	397	REAL(wp) :: time !:
[1239]	398
[1320]	399	INTEGER(iwp) :: i !:
	400	INTEGER(iwp) :: j !:
	401	INTEGER(iwp) :: k !:
	402	INTEGER(iwp) :: t !:
[1239]	403
[1320]	404
[1239]	405	t = 1
	406	DO WHILE ( time > timenudge(t) )
	407	t = t+1
	408	ENDDO
[1249]	409	IF ( time /= timenudge(1) ) THEN
[1239]	410	t = t-1
	411	ENDIF
	412
	413	dtm = ( time - timenudge(t) ) / ( timenudge(t+1) - timenudge(t) )
	414	dtp = ( timenudge(t+1) - time ) / ( timenudge(t+1) - timenudge(t) )
	415
	416	SELECT CASE ( prog_var )
	417
	418	CASE ( 'u' )
	419
	420	CALL calc_mean_profile( u, 1, 'nudging' )
	421
	422	DO k = nzb_u_inner(j,i)+1, nzt
	423
	424	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm )
	425
	426	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,1,0) - &
	427	( unudge(k,t) * dtp + &
	428	unudge(k,t+1) * dtm ) ) / currtnudge
	429	ENDDO
	430
	431	CASE ( 'v' )
	432
	433	CALL calc_mean_profile( v, 2, 'nudging' )
	434
	435	DO k = nzb_u_inner(j,i)+1, nzt
	436
	437	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm )
	438
	439	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,2,0) - &
	440	( vnudge(k,t) * dtp + &
	441	vnudge(k,t+1) * dtm ) ) / currtnudge
	442	ENDDO
	443
	444
	445	CASE ( 'pt' )
	446
	447	CALL calc_mean_profile( pt, 4, 'nudging' )
	448
	449	DO k = nzb_u_inner(j,i)+1, nzt
	450
	451	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm )
	452
	453	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,4,0) - &
	454	( ptnudge(k,t) * dtp + &
	455	ptnudge(k,t+1) * dtm ) ) / currtnudge
	456	ENDDO
	457
	458
	459	CASE ( 'q' )
	460
	461	CALL calc_mean_profile( q, 41, 'nudging' )
	462
	463	DO k = nzb_u_inner(j,i)+1, nzt
	464
	465	currtnudge = MAX( dt_3d, tnudge(k,t) * dtp + tnudge(k,t+1) * dtm )
	466
	467	tend(k,j,i) = tend(k,j,i) - ( hom(k,1,41,0) - &
	468	( qnudge(k,t) * dtp + &
	469	qnudge(k,t+1) * dtm ) ) / currtnudge
	470	ENDDO
	471
	472	CASE DEFAULT
	473	message_string = 'unknown prognostic variable "' // prog_var // '"'
	474	CALL message( 'nudge', 'PA0367', 1, 2, 0, 6, 0 )
	475
	476	END SELECT
	477
	478
	479	END SUBROUTINE nudge_ij
	480
	481	END MODULE nudge_mod

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

Download in other formats:

| Impressum | ©Leibniz Universität Hannover |