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source: palm/trunk/SOURCE/diffusion_w.f90 @ 1323

Last change on this file since 1323 was 1323, checked in by raasch, 10 years ago
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[1]	1	MODULE diffusion_w_mod
	2
[1036]	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
[1036]	18	!--------------------------------------------------------------------------------!
	19	!
[484]	20	! Current revisions:
[1]	21	! -----------------
[1321]	22	!
[1323]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: diffusion_w.f90 1323 2014-03-20 17:09:54Z raasch $
	27	!
[1323]	28	! 1322 2014-03-20 16:38:49Z raasch
	29	! REAL constants defined as wp-kind
	30	!
[1321]	31	! 1320 2014-03-20 08:40:49Z raasch
[1320]	32	! ONLY-attribute added to USE-statements,
	33	! kind-parameters added to all INTEGER and REAL declaration statements,
	34	! kinds are defined in new module kinds,
	35	! revision history before 2012 removed,
	36	! comment fields (!:) to be used for variable explanations added to
	37	! all variable declaration statements
[1]	38	!
[1258]	39	! 1257 2013-11-08 15:18:40Z raasch
	40	! openacc loop and loop vector clauses removed, declare create moved after
	41	! the FORTRAN declaration statement
	42	!
[1132]	43	! 1128 2013-04-12 06:19:32Z raasch
	44	! loop index bounds in accelerator version replaced by i_left, i_right, j_south,
	45	! j_north
	46	!
[1037]	47	! 1036 2012-10-22 13:43:42Z raasch
	48	! code put under GPL (PALM 3.9)
	49	!
[1017]	50	! 1015 2012-09-27 09:23:24Z raasch
	51	! accelerator version (*_acc) added
	52	!
[1002]	53	! 1001 2012-09-13 14:08:46Z raasch
	54	! arrays comunicated by module instead of parameter list
	55	!
[979]	56	! 978 2012-08-09 08:28:32Z fricke
	57	! outflow damping layer removed
	58	! kmxm_x/_z and kmxp_x/_z change to kmxm and kmxp
	59	! kmym_y/_z and kmyp_y/_z change to kmym and kmyp
	60	!
[1]	61	! Revision 1.1 1997/09/12 06:24:11 raasch
	62	! Initial revision
	63	!
	64	!
	65	! Description:
	66	! ------------
	67	! Diffusion term of the w-component
	68	!------------------------------------------------------------------------------!
	69
[1320]	70	USE wall_fluxes_mod, &
	71	ONLY : wall_fluxes, wall_fluxes_acc
[56]	72
[1]	73	PRIVATE
[1015]	74	PUBLIC diffusion_w, diffusion_w_acc
[1]	75
	76	INTERFACE diffusion_w
	77	MODULE PROCEDURE diffusion_w
	78	MODULE PROCEDURE diffusion_w_ij
	79	END INTERFACE diffusion_w
	80
[1015]	81	INTERFACE diffusion_w_acc
	82	MODULE PROCEDURE diffusion_w_acc
	83	END INTERFACE diffusion_w_acc
	84
[1]	85	CONTAINS
	86
	87
	88	!------------------------------------------------------------------------------!
	89	! Call for all grid points
	90	!------------------------------------------------------------------------------!
[1001]	91	SUBROUTINE diffusion_w
[1]	92
[1320]	93	USE arrays_3d, &
	94	ONLY : ddzu, ddzw, km, tend, u, v, w
	95
	96	USE control_parameters, &
	97	ONLY : topography
	98
	99	USE grid_variables, &
	100	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	101
	102	USE indices, &
	103	ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt
	104
	105	USE kinds
[1]	106
	107	IMPLICIT NONE
	108
[1320]	109	INTEGER(iwp) :: i !:
	110	INTEGER(iwp) :: j !:
	111	INTEGER(iwp) :: k !:
	112
	113	REAL(wp) :: kmxm !:
	114	REAL(wp) :: kmxp !:
	115	REAL(wp) :: kmym !:
	116	REAL(wp) :: kmyp !:
[1001]	117
[1320]	118	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !:
	119	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !:
[1]	120
	121
[56]	122	!
	123	!-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical
	124	!-- walls, if neccessary
	125	IF ( topography /= 'flat' ) THEN
[1320]	126	CALL wall_fluxes( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, nzb_w_inner, &
[56]	127	nzb_w_outer, wall_w_x )
[1320]	128	CALL wall_fluxes( wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp, nzb_w_inner, &
[56]	129	nzb_w_outer, wall_w_y )
	130	ENDIF
	131
[1]	132	DO i = nxl, nxr
	133	DO j = nys, nyn
	134	DO k = nzb_w_outer(j,i)+1, nzt-1
	135	!
	136	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	137	kmxp = 0.25_wp * &
[978]	138	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	139	kmxm = 0.25_wp * &
[978]	140	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	141	kmyp = 0.25_wp * &
[978]	142	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	143	kmym = 0.25_wp * &
[978]	144	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	145
	146	tend(k,j,i) = tend(k,j,i) &
[978]	147	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	148	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	149	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	150	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	151	& ) * ddx &
[978]	152	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	153	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	154	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	155	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	156	& ) * ddy &
[1322]	157	& + 2.0_wp * ( &
[1]	158	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	159	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	160	& ) * ddzu(k+1)
	161	ENDDO
	162
	163	!
	164	!-- Wall functions at all vertical walls, where necessary
	165	IF ( wall_w_x(j,i) /= 0.0 .OR. wall_w_y(j,i) /= 0.0 ) THEN
[51]	166
[1]	167	DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i)
	168	!
	169	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	170	kmxp = 0.25_wp * &
[978]	171	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	172	kmxm = 0.25_wp * &
[978]	173	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	174	kmyp = 0.25_wp * &
[978]	175	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	176	kmym = 0.25_wp * &
[978]	177	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	178
	179	tend(k,j,i) = tend(k,j,i) &
	180	+ ( fwxp(j,i) * ( &
[978]	181	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	182	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
[1]	183	) &
	184	- fwxm(j,i) * ( &
[978]	185	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	186	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	187	) &
[56]	188	+ wall_w_x(j,i) * wsus(k,j,i) &
[1]	189	) * ddx &
	190	+ ( fwyp(j,i) * ( &
[978]	191	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	192	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
[1]	193	) &
	194	- fwym(j,i) * ( &
[978]	195	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	196	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	197	) &
[56]	198	+ wall_w_y(j,i) * wsvs(k,j,i) &
[1]	199	) * ddy &
	200	+ 2.0 * ( &
	201	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	202	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	203	) * ddzu(k+1)
	204	ENDDO
	205	ENDIF
	206
	207	ENDDO
	208	ENDDO
	209
	210	END SUBROUTINE diffusion_w
	211
	212
	213	!------------------------------------------------------------------------------!
[1015]	214	! Call for all grid points - accelerator version
	215	!------------------------------------------------------------------------------!
	216	SUBROUTINE diffusion_w_acc
	217
[1320]	218	USE arrays_3d, &
	219	ONLY : ddzu, ddzw, km, tend, u, v, w
	220
	221	USE control_parameters, &
	222	ONLY : topography
	223
	224	USE grid_variables, &
	225	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	226
	227	USE indices, &
	228	ONLY : i_left, i_right, j_north, j_south, nxl, nxr, nyn, nys, nzb, &
	229	nzb_w_inner, nzb_w_outer, nzt
	230
	231	USE kinds
[1015]	232
	233	IMPLICIT NONE
	234
[1320]	235	INTEGER(iwp) :: i !:
	236	INTEGER(iwp) :: j !:
	237	INTEGER(iwp) :: k !:
	238
	239	REAL(wp) :: kmxm !:
	240	REAL(wp) :: kmxp !:
	241	REAL(wp) :: kmym !:
	242	REAL(wp) :: kmyp !:
[1015]	243
[1320]	244	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !:
	245	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !:
[1015]	246	!$acc declare create ( wsus, wsvs )
	247
	248	!
	249	!-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical
	250	!-- walls, if neccessary
	251	IF ( topography /= 'flat' ) THEN
[1320]	252	CALL wall_fluxes_acc( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, &
	253	nzb_w_inner, nzb_w_outer, wall_w_x )
	254	CALL wall_fluxes_acc( wsvs, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, &
	255	nzb_w_inner, nzb_w_outer, wall_w_y )
[1015]	256	ENDIF
	257
	258	!$acc kernels present ( u, v, w, km, tend, vsws, vswst ) &
	259	!$acc present ( ddzu, ddzw, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y ) &
	260	!$acc present ( nzb_w_inner, nzb_w_outer )
[1128]	261	DO i = i_left, i_right
	262	DO j = j_south, j_north
[1015]	263	DO k = 1, nzt
	264	IF ( k > nzb_w_outer(j,i) ) THEN
	265	!
	266	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	267	kmxp = 0.25_wp * &
[1015]	268	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	269	kmxm = 0.25_wp * &
[1015]	270	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	271	kmyp = 0.25_wp * &
[1015]	272	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	273	kmym = 0.25_wp * &
[1015]	274	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
	275
	276	tend(k,j,i) = tend(k,j,i) &
	277	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	278	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	279	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	280	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	281	& ) * ddx &
	282	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	283	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	284	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	285	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	286	& ) * ddy &
[1322]	287	& + 2.0_wp * ( &
[1015]	288	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	289	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	290	& ) * ddzu(k+1)
	291	ENDIF
	292	ENDDO
	293
	294	!
	295	!-- Wall functions at all vertical walls, where necessary
	296	DO k = 1,nzt
	297
	298	IF ( k > nzb_w_inner(j,i) .AND. k <= nzb_w_outer(j,i) .AND. &
	299	wall_w_x(j,i) /= 0.0 .AND. wall_w_y(j,i) /= 0.0 ) THEN
	300	!
	301	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	302	kmxp = 0.25_wp * &
[1015]	303	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	304	kmxm = 0.25_wp * &
[1015]	305	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	306	kmyp = 0.25_wp * &
[1015]	307	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	308	kmym = 0.25_wp * &
[1015]	309	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
	310
	311	tend(k,j,i) = tend(k,j,i) &
	312	+ ( fwxp(j,i) * ( &
	313	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	314	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	315	) &
	316	- fwxm(j,i) * ( &
	317	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	318	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	319	) &
	320	+ wall_w_x(j,i) * wsus(k,j,i) &
	321	) * ddx &
	322	+ ( fwyp(j,i) * ( &
	323	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	324	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	325	) &
	326	- fwym(j,i) * ( &
	327	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	328	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	329	) &
	330	+ wall_w_y(j,i) * wsvs(k,j,i) &
	331	) * ddy &
	332	+ 2.0 * ( &
	333	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	334	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	335	) * ddzu(k+1)
	336	ENDIF
	337	ENDDO
	338
	339	ENDDO
	340	ENDDO
	341	!$acc end kernels
	342
	343	END SUBROUTINE diffusion_w_acc
	344
	345
	346	!------------------------------------------------------------------------------!
[1]	347	! Call for grid point i,j
	348	!------------------------------------------------------------------------------!
[1001]	349	SUBROUTINE diffusion_w_ij( i, j )
[1]	350
[1320]	351	USE arrays_3d, &
	352	ONLY : ddzu, ddzw, km, tend, u, v, w
	353
	354	USE control_parameters, &
	355	ONLY : topography
	356
	357	USE grid_variables, &
	358	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	359
	360	USE indices, &
	361	ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt
	362
	363	USE kinds
[1]	364
	365	IMPLICIT NONE
	366
[1320]	367	INTEGER(iwp) :: i !:
	368	INTEGER(iwp) :: j !:
	369	INTEGER(iwp) :: k !:
	370
	371	REAL(wp) :: kmxm !:
	372	REAL(wp) :: kmxp !:
	373	REAL(wp) :: kmym !:
	374	REAL(wp) :: kmyp !:
[1]	375
[1320]	376	REAL(wp), DIMENSION(nzb:nzt+1) :: wsus
	377	REAL(wp), DIMENSION(nzb:nzt+1) :: wsvs
[1]	378
[1001]	379
[1]	380	DO k = nzb_w_outer(j,i)+1, nzt-1
	381	!
	382	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	383	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	384	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	385	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	386	kmym = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	387
	388	tend(k,j,i) = tend(k,j,i) &
[978]	389	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	390	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	391	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	392	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	393	& ) * ddx &
[978]	394	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	395	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	396	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	397	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	398	& ) * ddy &
[1322]	399	& + 2.0_wp * ( &
[1]	400	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	401	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	402	& ) * ddzu(k+1)
	403	ENDDO
	404
	405	!
	406	!-- Wall functions at all vertical walls, where necessary
	407	IF ( wall_w_x(j,i) /= 0.0 .OR. wall_w_y(j,i) /= 0.0 ) THEN
[51]	408
	409	!
	410	!-- Calculate the horizontal momentum fluxes w'u' and/or w'v'
	411	IF ( wall_w_x(j,i) /= 0.0 ) THEN
[1320]	412	CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), &
	413	wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp )
[51]	414	ELSE
	415	wsus = 0.0
	416	ENDIF
	417
	418	IF ( wall_w_y(j,i) /= 0.0 ) THEN
[1320]	419	CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), &
	420	wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp )
[51]	421	ELSE
	422	wsvs = 0.0
	423	ENDIF
	424
[1]	425	DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i)
	426	!
	427	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	428	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	429	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	430	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	431	kmym = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	432
	433	tend(k,j,i) = tend(k,j,i) &
	434	+ ( fwxp(j,i) * ( &
[978]	435	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	436	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
[1]	437	) &
	438	- fwxm(j,i) * ( &
[978]	439	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	440	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	441	) &
[51]	442	+ wall_w_x(j,i) * wsus(k) &
[1]	443	) * ddx &
	444	+ ( fwyp(j,i) * ( &
[978]	445	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	446	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
[1]	447	) &
	448	- fwym(j,i) * ( &
[978]	449	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	450	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	451	) &
[51]	452	+ wall_w_y(j,i) * wsvs(k) &
[1]	453	) * ddy &
	454	+ 2.0 * ( &
	455	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	456	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	457	) * ddzu(k+1)
	458	ENDDO
	459	ENDIF
	460
	461	END SUBROUTINE diffusion_w_ij
	462
[1323]	463	END MODULE diffusion_w_mod

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