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source: palm/trunk/SOURCE/diffusion_w.f90 @ 2000

Last change on this file since 2000 was 2000, checked in by knoop, 8 years ago
Forced header and separation lines into 80 columns
Property svn:keywords set to `Id`
File size: 22.9 KB

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[1873]	1	!> @file diffusion_w.f90
[2000]	2	!------------------------------------------------------------------------------!
[1036]	3	! This file is part of PALM.
	4	!
[2000]	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.
[1036]	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	!
[1818]	17	! Copyright 1997-2016 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[484]	20	! Current revisions:
[1]	21	! -----------------
[2000]	22	! Forced header and separation lines into 80 columns
[1341]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: diffusion_w.f90 2000 2016-08-20 18:09:15Z knoop $
	27	!
[1874]	28	! 1873 2016-04-18 14:50:06Z maronga
	29	! Module renamed (removed _mod)
	30	!
	31	!
[1851]	32	! 1850 2016-04-08 13:29:27Z maronga
	33	! Module renamed
	34	!
	35	!
[1683]	36	! 1682 2015-10-07 23:56:08Z knoop
	37	! Code annotations made doxygen readable
	38	!
[1375]	39	! 1374 2014-04-25 12:55:07Z raasch
	40	! vsws + vswst removed from acc-present-list
	41	!
[1354]	42	! 1353 2014-04-08 15:21:23Z heinze
	43	! REAL constants provided with KIND-attribute
	44	!
[1341]	45	! 1340 2014-03-25 19:45:13Z kanani
	46	! REAL constants defined as wp-kind
	47	!
[1323]	48	! 1322 2014-03-20 16:38:49Z raasch
	49	! REAL constants defined as wp-kind
	50	!
[1321]	51	! 1320 2014-03-20 08:40:49Z raasch
[1320]	52	! ONLY-attribute added to USE-statements,
	53	! kind-parameters added to all INTEGER and REAL declaration statements,
	54	! kinds are defined in new module kinds,
	55	! revision history before 2012 removed,
	56	! comment fields (!:) to be used for variable explanations added to
	57	! all variable declaration statements
[1]	58	!
[1258]	59	! 1257 2013-11-08 15:18:40Z raasch
	60	! openacc loop and loop vector clauses removed, declare create moved after
	61	! the FORTRAN declaration statement
	62	!
[1132]	63	! 1128 2013-04-12 06:19:32Z raasch
	64	! loop index bounds in accelerator version replaced by i_left, i_right, j_south,
	65	! j_north
	66	!
[1037]	67	! 1036 2012-10-22 13:43:42Z raasch
	68	! code put under GPL (PALM 3.9)
	69	!
[1017]	70	! 1015 2012-09-27 09:23:24Z raasch
	71	! accelerator version (*_acc) added
	72	!
[1002]	73	! 1001 2012-09-13 14:08:46Z raasch
	74	! arrays comunicated by module instead of parameter list
	75	!
[979]	76	! 978 2012-08-09 08:28:32Z fricke
	77	! outflow damping layer removed
	78	! kmxm_x/_z and kmxp_x/_z change to kmxm and kmxp
	79	! kmym_y/_z and kmyp_y/_z change to kmym and kmyp
	80	!
[1]	81	! Revision 1.1 1997/09/12 06:24:11 raasch
	82	! Initial revision
	83	!
	84	!
	85	! Description:
	86	! ------------
[1682]	87	!> Diffusion term of the w-component
[1]	88	!------------------------------------------------------------------------------!
[1682]	89	MODULE diffusion_w_mod
	90
[1]	91
[1320]	92	USE wall_fluxes_mod, &
	93	ONLY : wall_fluxes, wall_fluxes_acc
[56]	94
[1]	95	PRIVATE
[1015]	96	PUBLIC diffusion_w, diffusion_w_acc
[1]	97
	98	INTERFACE diffusion_w
	99	MODULE PROCEDURE diffusion_w
	100	MODULE PROCEDURE diffusion_w_ij
	101	END INTERFACE diffusion_w
	102
[1015]	103	INTERFACE diffusion_w_acc
	104	MODULE PROCEDURE diffusion_w_acc
	105	END INTERFACE diffusion_w_acc
	106
[1]	107	CONTAINS
	108
	109
	110	!------------------------------------------------------------------------------!
[1682]	111	! Description:
	112	! ------------
	113	!> Call for all grid points
[1]	114	!------------------------------------------------------------------------------!
[1001]	115	SUBROUTINE diffusion_w
[1]	116
[1320]	117	USE arrays_3d, &
	118	ONLY : ddzu, ddzw, km, tend, u, v, w
	119
	120	USE control_parameters, &
	121	ONLY : topography
	122
	123	USE grid_variables, &
	124	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	125
	126	USE indices, &
	127	ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt
	128
	129	USE kinds
[1]	130
	131	IMPLICIT NONE
	132
[1682]	133	INTEGER(iwp) :: i !<
	134	INTEGER(iwp) :: j !<
	135	INTEGER(iwp) :: k !<
[1320]	136
[1682]	137	REAL(wp) :: kmxm !<
	138	REAL(wp) :: kmxp !<
	139	REAL(wp) :: kmym !<
	140	REAL(wp) :: kmyp !<
[1001]	141
[1682]	142	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !<
	143	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !<
[1]	144
	145
[56]	146	!
	147	!-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical
	148	!-- walls, if neccessary
	149	IF ( topography /= 'flat' ) THEN
[1320]	150	CALL wall_fluxes( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, nzb_w_inner, &
[56]	151	nzb_w_outer, wall_w_x )
[1320]	152	CALL wall_fluxes( wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp, nzb_w_inner, &
[56]	153	nzb_w_outer, wall_w_y )
	154	ENDIF
	155
[1]	156	DO i = nxl, nxr
	157	DO j = nys, nyn
	158	DO k = nzb_w_outer(j,i)+1, nzt-1
	159	!
	160	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	161	kmxp = 0.25_wp * &
[978]	162	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	163	kmxm = 0.25_wp * &
[978]	164	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	165	kmyp = 0.25_wp * &
[978]	166	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	167	kmym = 0.25_wp * &
[978]	168	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	169
	170	tend(k,j,i) = tend(k,j,i) &
[978]	171	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	172	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	173	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	174	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	175	& ) * ddx &
[978]	176	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	177	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	178	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	179	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	180	& ) * ddy &
[1322]	181	& + 2.0_wp * ( &
[1]	182	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	183	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	184	& ) * ddzu(k+1)
[1]	185	ENDDO
	186
	187	!
	188	!-- Wall functions at all vertical walls, where necessary
[1340]	189	IF ( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) THEN
[51]	190
[1]	191	DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i)
	192	!
	193	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	194	kmxp = 0.25_wp * &
[978]	195	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	196	kmxm = 0.25_wp * &
[978]	197	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	198	kmyp = 0.25_wp * &
[978]	199	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	200	kmym = 0.25_wp * &
[978]	201	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	202
	203	tend(k,j,i) = tend(k,j,i) &
	204	+ ( fwxp(j,i) * ( &
[978]	205	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	206	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
[1]	207	) &
	208	- fwxm(j,i) * ( &
[978]	209	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	210	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	211	) &
[56]	212	+ wall_w_x(j,i) * wsus(k,j,i) &
[1]	213	) * ddx &
	214	+ ( fwyp(j,i) * ( &
[978]	215	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	216	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
[1]	217	) &
	218	- fwym(j,i) * ( &
[978]	219	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	220	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	221	) &
[56]	222	+ wall_w_y(j,i) * wsvs(k,j,i) &
[1]	223	) * ddy &
[1340]	224	+ 2.0_wp * ( &
[1]	225	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	226	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	227	) * ddzu(k+1)
[1]	228	ENDDO
	229	ENDIF
	230
	231	ENDDO
	232	ENDDO
	233
	234	END SUBROUTINE diffusion_w
	235
	236
	237	!------------------------------------------------------------------------------!
[1682]	238	! Description:
	239	! ------------
	240	!> Call for all grid points - accelerator version
[1015]	241	!------------------------------------------------------------------------------!
	242	SUBROUTINE diffusion_w_acc
	243
[1320]	244	USE arrays_3d, &
	245	ONLY : ddzu, ddzw, km, tend, u, v, w
	246
	247	USE control_parameters, &
	248	ONLY : topography
	249
	250	USE grid_variables, &
	251	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	252
	253	USE indices, &
	254	ONLY : i_left, i_right, j_north, j_south, nxl, nxr, nyn, nys, nzb, &
	255	nzb_w_inner, nzb_w_outer, nzt
	256
	257	USE kinds
[1015]	258
	259	IMPLICIT NONE
	260
[1682]	261	INTEGER(iwp) :: i !<
	262	INTEGER(iwp) :: j !<
	263	INTEGER(iwp) :: k !<
[1320]	264
[1682]	265	REAL(wp) :: kmxm !<
	266	REAL(wp) :: kmxp !<
	267	REAL(wp) :: kmym !<
	268	REAL(wp) :: kmyp !<
[1015]	269
[1682]	270	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !<
	271	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !<
[1015]	272	!$acc declare create ( wsus, wsvs )
	273
	274	!
	275	!-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical
	276	!-- walls, if neccessary
	277	IF ( topography /= 'flat' ) THEN
[1320]	278	CALL wall_fluxes_acc( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, &
	279	nzb_w_inner, nzb_w_outer, wall_w_x )
	280	CALL wall_fluxes_acc( wsvs, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, &
	281	nzb_w_inner, nzb_w_outer, wall_w_y )
[1015]	282	ENDIF
	283
[1374]	284	!$acc kernels present ( u, v, w, km, tend ) &
[1015]	285	!$acc present ( ddzu, ddzw, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y ) &
	286	!$acc present ( nzb_w_inner, nzb_w_outer )
[1128]	287	DO i = i_left, i_right
	288	DO j = j_south, j_north
[1015]	289	DO k = 1, nzt
	290	IF ( k > nzb_w_outer(j,i) ) THEN
	291	!
	292	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	293	kmxp = 0.25_wp * &
[1015]	294	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	295	kmxm = 0.25_wp * &
[1015]	296	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	297	kmyp = 0.25_wp * &
[1015]	298	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	299	kmym = 0.25_wp * &
[1015]	300	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
	301
	302	tend(k,j,i) = tend(k,j,i) &
	303	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	304	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	305	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	306	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	307	& ) * ddx &
	308	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	309	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	310	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	311	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	312	& ) * ddy &
[1322]	313	& + 2.0_wp * ( &
[1015]	314	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	315	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	316	& ) * ddzu(k+1)
[1015]	317	ENDIF
	318	ENDDO
	319
	320	!
	321	!-- Wall functions at all vertical walls, where necessary
	322	DO k = 1,nzt
	323
	324	IF ( k > nzb_w_inner(j,i) .AND. k <= nzb_w_outer(j,i) .AND. &
[1340]	325	wall_w_x(j,i) /= 0.0_wp .AND. wall_w_y(j,i) /= 0.0_wp ) THEN
[1015]	326	!
	327	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	328	kmxp = 0.25_wp * &
[1015]	329	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	330	kmxm = 0.25_wp * &
[1015]	331	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	332	kmyp = 0.25_wp * &
[1015]	333	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	334	kmym = 0.25_wp * &
[1015]	335	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
	336
	337	tend(k,j,i) = tend(k,j,i) &
	338	+ ( fwxp(j,i) * ( &
	339	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	340	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	341	) &
	342	- fwxm(j,i) * ( &
	343	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	344	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	345	) &
	346	+ wall_w_x(j,i) * wsus(k,j,i) &
	347	) * ddx &
	348	+ ( fwyp(j,i) * ( &
	349	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	350	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	351	) &
	352	- fwym(j,i) * ( &
	353	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	354	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	355	) &
	356	+ wall_w_y(j,i) * wsvs(k,j,i) &
	357	) * ddy &
[1340]	358	+ 2.0_wp * ( &
[1015]	359	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	360	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	361	) * ddzu(k+1)
[1015]	362	ENDIF
	363	ENDDO
	364
	365	ENDDO
	366	ENDDO
	367	!$acc end kernels
	368
	369	END SUBROUTINE diffusion_w_acc
	370
	371
	372	!------------------------------------------------------------------------------!
[1682]	373	! Description:
	374	! ------------
	375	!> Call for grid point i,j
[1]	376	!------------------------------------------------------------------------------!
[1001]	377	SUBROUTINE diffusion_w_ij( i, j )
[1]	378
[1320]	379	USE arrays_3d, &
	380	ONLY : ddzu, ddzw, km, tend, u, v, w
	381
	382	USE control_parameters, &
	383	ONLY : topography
	384
	385	USE grid_variables, &
	386	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	387
	388	USE indices, &
	389	ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt
	390
	391	USE kinds
[1]	392
	393	IMPLICIT NONE
	394
[1682]	395	INTEGER(iwp) :: i !<
	396	INTEGER(iwp) :: j !<
	397	INTEGER(iwp) :: k !<
[1320]	398
[1682]	399	REAL(wp) :: kmxm !<
	400	REAL(wp) :: kmxp !<
	401	REAL(wp) :: kmym !<
	402	REAL(wp) :: kmyp !<
[1]	403
[1320]	404	REAL(wp), DIMENSION(nzb:nzt+1) :: wsus
	405	REAL(wp), DIMENSION(nzb:nzt+1) :: wsvs
[1]	406
[1001]	407
[1]	408	DO k = nzb_w_outer(j,i)+1, nzt-1
	409	!
	410	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	411	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	412	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	413	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	414	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]	415
	416	tend(k,j,i) = tend(k,j,i) &
[978]	417	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	418	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	419	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	420	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	421	& ) * ddx &
[978]	422	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	423	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	424	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	425	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	426	& ) * ddy &
[1322]	427	& + 2.0_wp * ( &
[1]	428	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	429	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	430	& ) * ddzu(k+1)
[1]	431	ENDDO
	432
	433	!
	434	!-- Wall functions at all vertical walls, where necessary
[1340]	435	IF ( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) THEN
[51]	436
	437	!
	438	!-- Calculate the horizontal momentum fluxes w'u' and/or w'v'
[1340]	439	IF ( wall_w_x(j,i) /= 0.0_wp ) THEN
[1320]	440	CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), &
	441	wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp )
[51]	442	ELSE
[1340]	443	wsus = 0.0_wp
[51]	444	ENDIF
	445
[1340]	446	IF ( wall_w_y(j,i) /= 0.0_wp ) THEN
[1320]	447	CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), &
	448	wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp )
[51]	449	ELSE
[1340]	450	wsvs = 0.0_wp
[51]	451	ENDIF
	452
[1]	453	DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i)
	454	!
	455	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	456	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	457	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	458	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	459	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]	460
	461	tend(k,j,i) = tend(k,j,i) &
	462	+ ( fwxp(j,i) * ( &
[978]	463	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	464	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
[1]	465	) &
	466	- fwxm(j,i) * ( &
[978]	467	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	468	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	469	) &
[51]	470	+ wall_w_x(j,i) * wsus(k) &
[1]	471	) * ddx &
	472	+ ( fwyp(j,i) * ( &
[978]	473	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	474	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
[1]	475	) &
	476	- fwym(j,i) * ( &
[978]	477	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	478	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	479	) &
[51]	480	+ wall_w_y(j,i) * wsvs(k) &
[1]	481	) * ddy &
[1340]	482	+ 2.0_wp * ( &
[1]	483	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	484	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	485	) * ddzu(k+1)
[1]	486	ENDDO
	487	ENDIF
	488
	489	END SUBROUTINE diffusion_w_ij
	490
[1323]	491	END MODULE diffusion_w_mod

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