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diffusion_w_mod.f90 @ 1852

Last change on this file since 1852 was 1851, checked in by maronga, 9 years ago
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[1850]	1	!> @file diffusion_w_mod.f90
[1036]	2	!--------------------------------------------------------------------------------!
	3	! This file is part of PALM.
	4	!
	5	! PALM is free software: you can redistribute it and/or modify it under the terms
	6	! of the GNU General Public License as published by the Free Software Foundation,
	7	! either version 3 of the License, or (at your option) any later version.
	8	!
	9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	12	!
	13	! You should have received a copy of the GNU General Public License along with
	14	! PALM. If not, see <http://www.gnu.org/licenses/>.
	15	!
[1818]	16	! Copyright 1997-2016 Leibniz Universitaet Hannover
[1036]	17	!--------------------------------------------------------------------------------!
	18	!
[484]	19	! Current revisions:
[1]	20	! -----------------
[1341]	21	!
[1683]	22	!
[1321]	23	! Former revisions:
	24	! -----------------
	25	! $Id: diffusion_w_mod.f90 1851 2016-04-08 13:32:50Z hoffmann $
	26	!
[1851]	27	! 1850 2016-04-08 13:29:27Z maronga
	28	! Module renamed
	29	!
	30	!
[1683]	31	! 1682 2015-10-07 23:56:08Z knoop
	32	! Code annotations made doxygen readable
	33	!
[1375]	34	! 1374 2014-04-25 12:55:07Z raasch
	35	! vsws + vswst removed from acc-present-list
	36	!
[1354]	37	! 1353 2014-04-08 15:21:23Z heinze
	38	! REAL constants provided with KIND-attribute
	39	!
[1341]	40	! 1340 2014-03-25 19:45:13Z kanani
	41	! REAL constants defined as wp-kind
	42	!
[1323]	43	! 1322 2014-03-20 16:38:49Z raasch
	44	! REAL constants defined as wp-kind
	45	!
[1321]	46	! 1320 2014-03-20 08:40:49Z raasch
[1320]	47	! ONLY-attribute added to USE-statements,
	48	! kind-parameters added to all INTEGER and REAL declaration statements,
	49	! kinds are defined in new module kinds,
	50	! revision history before 2012 removed,
	51	! comment fields (!:) to be used for variable explanations added to
	52	! all variable declaration statements
[1]	53	!
[1258]	54	! 1257 2013-11-08 15:18:40Z raasch
	55	! openacc loop and loop vector clauses removed, declare create moved after
	56	! the FORTRAN declaration statement
	57	!
[1132]	58	! 1128 2013-04-12 06:19:32Z raasch
	59	! loop index bounds in accelerator version replaced by i_left, i_right, j_south,
	60	! j_north
	61	!
[1037]	62	! 1036 2012-10-22 13:43:42Z raasch
	63	! code put under GPL (PALM 3.9)
	64	!
[1017]	65	! 1015 2012-09-27 09:23:24Z raasch
	66	! accelerator version (*_acc) added
	67	!
[1002]	68	! 1001 2012-09-13 14:08:46Z raasch
	69	! arrays comunicated by module instead of parameter list
	70	!
[979]	71	! 978 2012-08-09 08:28:32Z fricke
	72	! outflow damping layer removed
	73	! kmxm_x/_z and kmxp_x/_z change to kmxm and kmxp
	74	! kmym_y/_z and kmyp_y/_z change to kmym and kmyp
	75	!
[1]	76	! Revision 1.1 1997/09/12 06:24:11 raasch
	77	! Initial revision
	78	!
	79	!
	80	! Description:
	81	! ------------
[1682]	82	!> Diffusion term of the w-component
[1]	83	!------------------------------------------------------------------------------!
[1682]	84	MODULE diffusion_w_mod
	85
[1]	86
[1320]	87	USE wall_fluxes_mod, &
	88	ONLY : wall_fluxes, wall_fluxes_acc
[56]	89
[1]	90	PRIVATE
[1015]	91	PUBLIC diffusion_w, diffusion_w_acc
[1]	92
	93	INTERFACE diffusion_w
	94	MODULE PROCEDURE diffusion_w
	95	MODULE PROCEDURE diffusion_w_ij
	96	END INTERFACE diffusion_w
	97
[1015]	98	INTERFACE diffusion_w_acc
	99	MODULE PROCEDURE diffusion_w_acc
	100	END INTERFACE diffusion_w_acc
	101
[1]	102	CONTAINS
	103
	104
	105	!------------------------------------------------------------------------------!
[1682]	106	! Description:
	107	! ------------
	108	!> Call for all grid points
[1]	109	!------------------------------------------------------------------------------!
[1001]	110	SUBROUTINE diffusion_w
[1]	111
[1320]	112	USE arrays_3d, &
	113	ONLY : ddzu, ddzw, km, tend, u, v, w
	114
	115	USE control_parameters, &
	116	ONLY : topography
	117
	118	USE grid_variables, &
	119	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	120
	121	USE indices, &
	122	ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt
	123
	124	USE kinds
[1]	125
	126	IMPLICIT NONE
	127
[1682]	128	INTEGER(iwp) :: i !<
	129	INTEGER(iwp) :: j !<
	130	INTEGER(iwp) :: k !<
[1320]	131
[1682]	132	REAL(wp) :: kmxm !<
	133	REAL(wp) :: kmxp !<
	134	REAL(wp) :: kmym !<
	135	REAL(wp) :: kmyp !<
[1001]	136
[1682]	137	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !<
	138	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !<
[1]	139
	140
[56]	141	!
	142	!-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical
	143	!-- walls, if neccessary
	144	IF ( topography /= 'flat' ) THEN
[1320]	145	CALL wall_fluxes( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, nzb_w_inner, &
[56]	146	nzb_w_outer, wall_w_x )
[1320]	147	CALL wall_fluxes( wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp, nzb_w_inner, &
[56]	148	nzb_w_outer, wall_w_y )
	149	ENDIF
	150
[1]	151	DO i = nxl, nxr
	152	DO j = nys, nyn
	153	DO k = nzb_w_outer(j,i)+1, nzt-1
	154	!
	155	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	156	kmxp = 0.25_wp * &
[978]	157	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	158	kmxm = 0.25_wp * &
[978]	159	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	160	kmyp = 0.25_wp * &
[978]	161	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	162	kmym = 0.25_wp * &
[978]	163	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	164
	165	tend(k,j,i) = tend(k,j,i) &
[978]	166	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	167	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	168	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	169	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	170	& ) * ddx &
[978]	171	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	172	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	173	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	174	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	175	& ) * ddy &
[1322]	176	& + 2.0_wp * ( &
[1]	177	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	178	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	179	& ) * ddzu(k+1)
[1]	180	ENDDO
	181
	182	!
	183	!-- Wall functions at all vertical walls, where necessary
[1340]	184	IF ( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) THEN
[51]	185
[1]	186	DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i)
	187	!
	188	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	189	kmxp = 0.25_wp * &
[978]	190	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	191	kmxm = 0.25_wp * &
[978]	192	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	193	kmyp = 0.25_wp * &
[978]	194	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	195	kmym = 0.25_wp * &
[978]	196	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
[1]	197
	198	tend(k,j,i) = tend(k,j,i) &
	199	+ ( fwxp(j,i) * ( &
[978]	200	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	201	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
[1]	202	) &
	203	- fwxm(j,i) * ( &
[978]	204	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	205	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	206	) &
[56]	207	+ wall_w_x(j,i) * wsus(k,j,i) &
[1]	208	) * ddx &
	209	+ ( fwyp(j,i) * ( &
[978]	210	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	211	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
[1]	212	) &
	213	- fwym(j,i) * ( &
[978]	214	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	215	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	216	) &
[56]	217	+ wall_w_y(j,i) * wsvs(k,j,i) &
[1]	218	) * ddy &
[1340]	219	+ 2.0_wp * ( &
[1]	220	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	221	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	222	) * ddzu(k+1)
[1]	223	ENDDO
	224	ENDIF
	225
	226	ENDDO
	227	ENDDO
	228
	229	END SUBROUTINE diffusion_w
	230
	231
	232	!------------------------------------------------------------------------------!
[1682]	233	! Description:
	234	! ------------
	235	!> Call for all grid points - accelerator version
[1015]	236	!------------------------------------------------------------------------------!
	237	SUBROUTINE diffusion_w_acc
	238
[1320]	239	USE arrays_3d, &
	240	ONLY : ddzu, ddzw, km, tend, u, v, w
	241
	242	USE control_parameters, &
	243	ONLY : topography
	244
	245	USE grid_variables, &
	246	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	247
	248	USE indices, &
	249	ONLY : i_left, i_right, j_north, j_south, nxl, nxr, nyn, nys, nzb, &
	250	nzb_w_inner, nzb_w_outer, nzt
	251
	252	USE kinds
[1015]	253
	254	IMPLICIT NONE
	255
[1682]	256	INTEGER(iwp) :: i !<
	257	INTEGER(iwp) :: j !<
	258	INTEGER(iwp) :: k !<
[1320]	259
[1682]	260	REAL(wp) :: kmxm !<
	261	REAL(wp) :: kmxp !<
	262	REAL(wp) :: kmym !<
	263	REAL(wp) :: kmyp !<
[1015]	264
[1682]	265	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsus !<
	266	REAL(wp), DIMENSION(nzb:nzt+1,nys:nyn,nxl:nxr) :: wsvs !<
[1015]	267	!$acc declare create ( wsus, wsvs )
	268
	269	!
	270	!-- First calculate horizontal momentum flux w'u' and/or w'v' at vertical
	271	!-- walls, if neccessary
	272	IF ( topography /= 'flat' ) THEN
[1320]	273	CALL wall_fluxes_acc( wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, &
	274	nzb_w_inner, nzb_w_outer, wall_w_x )
	275	CALL wall_fluxes_acc( wsvs, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp, &
	276	nzb_w_inner, nzb_w_outer, wall_w_y )
[1015]	277	ENDIF
	278
[1374]	279	!$acc kernels present ( u, v, w, km, tend ) &
[1015]	280	!$acc present ( ddzu, ddzw, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y ) &
	281	!$acc present ( nzb_w_inner, nzb_w_outer )
[1128]	282	DO i = i_left, i_right
	283	DO j = j_south, j_north
[1015]	284	DO k = 1, nzt
	285	IF ( k > nzb_w_outer(j,i) ) THEN
	286	!
	287	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	288	kmxp = 0.25_wp * &
[1015]	289	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	290	kmxm = 0.25_wp * &
[1015]	291	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	292	kmyp = 0.25_wp * &
[1015]	293	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	294	kmym = 0.25_wp * &
[1015]	295	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
	296
	297	tend(k,j,i) = tend(k,j,i) &
	298	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	299	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	300	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	301	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	302	& ) * ddx &
	303	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	304	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	305	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	306	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	307	& ) * ddy &
[1322]	308	& + 2.0_wp * ( &
[1015]	309	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	310	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	311	& ) * ddzu(k+1)
[1015]	312	ENDIF
	313	ENDDO
	314
	315	!
	316	!-- Wall functions at all vertical walls, where necessary
	317	DO k = 1,nzt
	318
	319	IF ( k > nzb_w_inner(j,i) .AND. k <= nzb_w_outer(j,i) .AND. &
[1340]	320	wall_w_x(j,i) /= 0.0_wp .AND. wall_w_y(j,i) /= 0.0_wp ) THEN
[1015]	321	!
	322	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	323	kmxp = 0.25_wp * &
[1015]	324	( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
[1322]	325	kmxm = 0.25_wp * &
[1015]	326	( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
[1322]	327	kmyp = 0.25_wp * &
[1015]	328	( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
[1322]	329	kmym = 0.25_wp * &
[1015]	330	( km(k,j,i)+km(k+1,j,i)+km(k,j-1,i)+km(k+1,j-1,i) )
	331
	332	tend(k,j,i) = tend(k,j,i) &
	333	+ ( fwxp(j,i) * ( &
	334	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	335	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	336	) &
	337	- fwxm(j,i) * ( &
	338	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	339	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	340	) &
	341	+ wall_w_x(j,i) * wsus(k,j,i) &
	342	) * ddx &
	343	+ ( fwyp(j,i) * ( &
	344	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	345	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	346	) &
	347	- fwym(j,i) * ( &
	348	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	349	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	350	) &
	351	+ wall_w_y(j,i) * wsvs(k,j,i) &
	352	) * ddy &
[1340]	353	+ 2.0_wp * ( &
[1015]	354	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	355	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	356	) * ddzu(k+1)
[1015]	357	ENDIF
	358	ENDDO
	359
	360	ENDDO
	361	ENDDO
	362	!$acc end kernels
	363
	364	END SUBROUTINE diffusion_w_acc
	365
	366
	367	!------------------------------------------------------------------------------!
[1682]	368	! Description:
	369	! ------------
	370	!> Call for grid point i,j
[1]	371	!------------------------------------------------------------------------------!
[1001]	372	SUBROUTINE diffusion_w_ij( i, j )
[1]	373
[1320]	374	USE arrays_3d, &
	375	ONLY : ddzu, ddzw, km, tend, u, v, w
	376
	377	USE control_parameters, &
	378	ONLY : topography
	379
	380	USE grid_variables, &
	381	ONLY : ddx, ddy, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	382
	383	USE indices, &
	384	ONLY : nxl, nxr, nyn, nys, nzb, nzb_w_inner, nzb_w_outer, nzt
	385
	386	USE kinds
[1]	387
	388	IMPLICIT NONE
	389
[1682]	390	INTEGER(iwp) :: i !<
	391	INTEGER(iwp) :: j !<
	392	INTEGER(iwp) :: k !<
[1320]	393
[1682]	394	REAL(wp) :: kmxm !<
	395	REAL(wp) :: kmxp !<
	396	REAL(wp) :: kmym !<
	397	REAL(wp) :: kmyp !<
[1]	398
[1320]	399	REAL(wp), DIMENSION(nzb:nzt+1) :: wsus
	400	REAL(wp), DIMENSION(nzb:nzt+1) :: wsvs
[1]	401
[1001]	402
[1]	403	DO k = nzb_w_outer(j,i)+1, nzt-1
	404	!
	405	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	406	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	407	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	408	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	409	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]	410
	411	tend(k,j,i) = tend(k,j,i) &
[978]	412	& + ( kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	413	& + kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	414	& - kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	415	& - kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	416	& ) * ddx &
[978]	417	& + ( kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	418	& + kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	419	& - kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	420	& - kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	421	& ) * ddy &
[1322]	422	& + 2.0_wp * ( &
[1]	423	& km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	424	& - km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	425	& ) * ddzu(k+1)
[1]	426	ENDDO
	427
	428	!
	429	!-- Wall functions at all vertical walls, where necessary
[1340]	430	IF ( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) THEN
[51]	431
	432	!
	433	!-- Calculate the horizontal momentum fluxes w'u' and/or w'v'
[1340]	434	IF ( wall_w_x(j,i) /= 0.0_wp ) THEN
[1320]	435	CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), &
	436	wsus, 0.0_wp, 0.0_wp, 0.0_wp, 1.0_wp )
[51]	437	ELSE
[1340]	438	wsus = 0.0_wp
[51]	439	ENDIF
	440
[1340]	441	IF ( wall_w_y(j,i) /= 0.0_wp ) THEN
[1320]	442	CALL wall_fluxes( i, j, nzb_w_inner(j,i)+1, nzb_w_outer(j,i), &
	443	wsvs, 0.0_wp, 0.0_wp, 1.0_wp, 0.0_wp )
[51]	444	ELSE
[1340]	445	wsvs = 0.0_wp
[51]	446	ENDIF
	447
[1]	448	DO k = nzb_w_inner(j,i)+1, nzb_w_outer(j,i)
	449	!
	450	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	451	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	452	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	453	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	454	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]	455
	456	tend(k,j,i) = tend(k,j,i) &
	457	+ ( fwxp(j,i) * ( &
[978]	458	kmxp * ( w(k,j,i+1) - w(k,j,i) ) * ddx &
	459	+ kmxp * ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
[1]	460	) &
	461	- fwxm(j,i) * ( &
[978]	462	kmxm * ( w(k,j,i) - w(k,j,i-1) ) * ddx &
	463	+ kmxm * ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
[1]	464	) &
[51]	465	+ wall_w_x(j,i) * wsus(k) &
[1]	466	) * ddx &
	467	+ ( fwyp(j,i) * ( &
[978]	468	kmyp * ( w(k,j+1,i) - w(k,j,i) ) * ddy &
	469	+ kmyp * ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
[1]	470	) &
	471	- fwym(j,i) * ( &
[978]	472	kmym * ( w(k,j,i) - w(k,j-1,i) ) * ddy &
	473	+ kmym * ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
[1]	474	) &
[51]	475	+ wall_w_y(j,i) * wsvs(k) &
[1]	476	) * ddy &
[1340]	477	+ 2.0_wp * ( &
[1]	478	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	479	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
[1340]	480	) * ddzu(k+1)
[1]	481	ENDDO
	482	ENDIF
	483
	484	END SUBROUTINE diffusion_w_ij
	485
[1323]	486	END MODULE diffusion_w_mod

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source: palm/trunk/SOURCE/diffusion_w_mod.f90 @ 1852

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