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source: palm/trunk/SOURCE/diffusion_s.f90 @ 1812

Last change on this file since 1812 was 1692, checked in by maronga, 9 years ago
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[1682]	1	!> @file diffusion_s.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	!
[1691]	16	! Copyright 1997-2015 Leibniz Universitaet Hannover
[1036]	17	!--------------------------------------------------------------------------------!
	18	!
[484]	19	! Current revisions:
[1001]	20	! ------------------
[1341]	21	!
[1692]	22	!
[1321]	23	! Former revisions:
	24	! -----------------
	25	! $Id: diffusion_s.f90 1692 2015-10-26 16:29:17Z knoop $
	26	!
[1692]	27	! 1691 2015-10-26 16:17:44Z maronga
	28	! Formatting corrections.
	29	!
[1683]	30	! 1682 2015-10-07 23:56:08Z knoop
	31	! Code annotations made doxygen readable
	32	!
[1375]	33	! 1374 2014-04-25 12:55:07Z raasch
	34	! missing variables added to ONLY list
	35	!
[1341]	36	! 1340 2014-03-25 19:45:13Z kanani
	37	! REAL constants defined as wp-kind
	38	!
[1321]	39	! 1320 2014-03-20 08:40:49Z raasch
[1320]	40	! ONLY-attribute added to USE-statements,
	41	! kind-parameters added to all INTEGER and REAL declaration statements,
	42	! kinds are defined in new module kinds,
	43	! revision history before 2012 removed,
	44	! comment fields (!:) to be used for variable explanations added to
	45	! all variable declaration statements
[1321]	46	!
[1258]	47	! 1257 2013-11-08 15:18:40Z raasch
	48	! openacc loop and loop vector clauses removed
	49	!
[1132]	50	! 1128 2013-04-12 06:19:32Z raasch
	51	! loop index bounds in accelerator version replaced by i_left, i_right, j_south,
	52	! j_north
	53	!
[1093]	54	! 1092 2013-02-02 11:24:22Z raasch
	55	! unused variables removed
	56	!
[1037]	57	! 1036 2012-10-22 13:43:42Z raasch
	58	! code put under GPL (PALM 3.9)
	59	!
[1017]	60	! 1015 2012-09-27 09:23:24Z raasch
	61	! accelerator version (*_acc) added
	62	!
[1011]	63	! 1010 2012-09-20 07:59:54Z raasch
	64	! cpp switch __nopointer added for pointer free version
	65	!
[1002]	66	! 1001 2012-09-13 14:08:46Z raasch
	67	! some arrays comunicated by module instead of parameter list
	68	!
[1]	69	! Revision 1.1 2000/04/13 14:54:02 schroeter
	70	! Initial revision
	71	!
	72	!
	73	! Description:
	74	! ------------
[1682]	75	!> Diffusion term of scalar quantities (temperature and water content)
[1]	76	!------------------------------------------------------------------------------!
[1682]	77	MODULE diffusion_s_mod
	78
[1]	79
	80	PRIVATE
[1015]	81	PUBLIC diffusion_s, diffusion_s_acc
[1]	82
	83	INTERFACE diffusion_s
	84	MODULE PROCEDURE diffusion_s
	85	MODULE PROCEDURE diffusion_s_ij
	86	END INTERFACE diffusion_s
	87
[1015]	88	INTERFACE diffusion_s_acc
	89	MODULE PROCEDURE diffusion_s_acc
	90	END INTERFACE diffusion_s_acc
	91
[1]	92	CONTAINS
	93
	94
	95	!------------------------------------------------------------------------------!
[1682]	96	! Description:
	97	! ------------
	98	!> Call for all grid points
[1]	99	!------------------------------------------------------------------------------!
[1001]	100	SUBROUTINE diffusion_s( s, s_flux_b, s_flux_t, wall_s_flux )
[1]	101
[1320]	102	USE arrays_3d, &
	103	ONLY: ddzu, ddzw, kh, tend
	104
	105	USE control_parameters, &
	106	ONLY: use_surface_fluxes, use_top_fluxes
	107
	108	USE grid_variables, &
	109	ONLY: ddx2, ddy2, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	110
	111	USE indices, &
[1374]	112	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, &
[1320]	113	nzb_diff_s_inner, nzb_s_inner, nzb_s_outer, nzt, nzt_diff
	114
	115	USE kinds
[1]	116
	117	IMPLICIT NONE
	118
[1682]	119	INTEGER(iwp) :: i !<
	120	INTEGER(iwp) :: j !<
	121	INTEGER(iwp) :: k !<
	122	REAL(wp) :: wall_s_flux(0:4) !<
	123	REAL(wp), DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b, s_flux_t !<
[1010]	124	#if defined( __nopointer )
[1682]	125	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s !<
[1010]	126	#else
[1682]	127	REAL(wp), DIMENSION(:,:,:), POINTER :: s !<
[1010]	128	#endif
[1]	129
	130	DO i = nxl, nxr
	131	DO j = nys,nyn
	132	!
	133	!-- Compute horizontal diffusion
[19]	134	DO k = nzb_s_outer(j,i)+1, nzt
[1]	135
[1320]	136	tend(k,j,i) = tend(k,j,i) &
[1340]	137	+ 0.5_wp * ( &
[1320]	138	( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) &
	139	- ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) &
[1340]	140	) * ddx2 &
	141	+ 0.5_wp * ( &
[1320]	142	( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) &
	143	- ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) &
[1340]	144	) * ddy2
[1]	145	ENDDO
	146
	147	!
	148	!-- Apply prescribed horizontal wall heatflux where necessary
[1691]	149	IF ( ( wall_w_x(j,i) /= 0.0_wp ) .OR. ( wall_w_y(j,i) /= 0.0_wp ) &
	150	) THEN
[1]	151	DO k = nzb_s_inner(j,i)+1, nzb_s_outer(j,i)
	152
[1320]	153	tend(k,j,i) = tend(k,j,i) &
[1340]	154	+ ( fwxp(j,i) * 0.5_wp * &
[1320]	155	( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) &
[1340]	156	+ ( 1.0_wp - fwxp(j,i) ) * wall_s_flux(1) &
	157	-fwxm(j,i) * 0.5_wp * &
[1320]	158	( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) &
[1340]	159	+ ( 1.0_wp - fwxm(j,i) ) * wall_s_flux(2) &
[1320]	160	) * ddx2 &
[1340]	161	+ ( fwyp(j,i) * 0.5_wp * &
[1320]	162	( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) &
[1340]	163	+ ( 1.0_wp - fwyp(j,i) ) * wall_s_flux(3) &
	164	-fwym(j,i) * 0.5_wp * &
[1320]	165	( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) &
[1340]	166	+ ( 1.0_wp - fwym(j,i) ) * wall_s_flux(4) &
[1]	167	) * ddy2
	168	ENDDO
	169	ENDIF
	170
	171	!
	172	!-- Compute vertical diffusion. In case that surface fluxes have been
[19]	173	!-- prescribed or computed at bottom and/or top, index k starts/ends at
	174	!-- nzb+2 or nzt-1, respectively.
	175	DO k = nzb_diff_s_inner(j,i), nzt_diff
[1]	176
[1320]	177	tend(k,j,i) = tend(k,j,i) &
[1340]	178	+ 0.5_wp * ( &
[1320]	179	( kh(k,j,i) + kh(k+1,j,i) ) * ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) &
	180	- ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) &
[1340]	181	) * ddzw(k)
[1]	182	ENDDO
	183
	184	!
[19]	185	!-- Vertical diffusion at the first computational gridpoint along
[1]	186	!-- z-direction
	187	IF ( use_surface_fluxes ) THEN
	188
	189	k = nzb_s_inner(j,i)+1
	190
[1320]	191	tend(k,j,i) = tend(k,j,i) &
[1340]	192	+ ( 0.5_wp * ( kh(k,j,i)+kh(k+1,j,i) ) &
	193	* ( s(k+1,j,i)-s(k,j,i) ) &
	194	* ddzu(k+1) &
[1320]	195	+ s_flux_b(j,i) &
[1]	196	) * ddzw(k)
	197
	198	ENDIF
	199
[19]	200	!
	201	!-- Vertical diffusion at the last computational gridpoint along
	202	!-- z-direction
	203	IF ( use_top_fluxes ) THEN
	204
	205	k = nzt
	206
[1320]	207	tend(k,j,i) = tend(k,j,i) &
	208	+ ( - s_flux_t(j,i) &
[1340]	209	- 0.5_wp * ( kh(k-1,j,i)+kh(k,j,i) )&
	210	* ( s(k,j,i)-s(k-1,j,i) ) &
	211	* ddzu(k) &
[19]	212	) * ddzw(k)
	213
	214	ENDIF
	215
[1]	216	ENDDO
	217	ENDDO
	218
	219	END SUBROUTINE diffusion_s
	220
	221
	222	!------------------------------------------------------------------------------!
[1682]	223	! Description:
	224	! ------------
	225	!> Call for all grid points - accelerator version
[1015]	226	!------------------------------------------------------------------------------!
	227	SUBROUTINE diffusion_s_acc( s, s_flux_b, s_flux_t, wall_s_flux )
	228
[1320]	229	USE arrays_3d, &
	230	ONLY: ddzu, ddzw, kh, tend
	231
	232	USE control_parameters, &
	233	ONLY: use_surface_fluxes, use_top_fluxes
	234
	235	USE grid_variables, &
	236	ONLY: ddx2, ddy2, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	237
	238	USE indices, &
	239	ONLY: i_left, i_right, j_north, j_south, nxlg, nxrg, nyng, nysg, &
[1374]	240	nzb, nzb_diff_s_inner, nzb_s_inner, nzb_s_outer, nzt, nzt_diff
[1320]	241
	242	USE kinds
[1015]	243
	244	IMPLICIT NONE
	245
[1682]	246	INTEGER(iwp) :: i !<
	247	INTEGER(iwp) :: j !<
	248	INTEGER(iwp) :: k !<
	249	REAL(wp) :: wall_s_flux(0:4) !<
	250	REAL(wp), DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b !<
	251	REAL(wp), DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_t !<
[1015]	252	#if defined( __nopointer )
[1682]	253	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s !<
[1015]	254	#else
[1682]	255	REAL(wp), DIMENSION(:,:,:), POINTER :: s !<
[1015]	256	#endif
	257
	258	!$acc kernels present( ddzu, ddzw, fwxm, fwxp, fwym, fwyp, kh ) &
	259	!$acc present( nzb_diff_s_inner, nzb_s_inner, nzb_s_outer, s ) &
	260	!$acc present( s_flux_b, s_flux_t, tend, wall_s_flux ) &
	261	!$acc present( wall_w_x, wall_w_y )
[1128]	262	DO i = i_left, i_right
	263	DO j = j_south, j_north
[1015]	264	!
	265	!-- Compute horizontal diffusion
	266	DO k = 1, nzt
	267	IF ( k > nzb_s_outer(j,i) ) THEN
	268
[1320]	269	tend(k,j,i) = tend(k,j,i) &
[1340]	270	+ 0.5_wp * ( &
[1320]	271	( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) &
	272	- ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) &
[1340]	273	) * ddx2 &
	274	+ 0.5_wp * ( &
[1320]	275	( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) &
	276	- ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) &
[1340]	277	) * ddy2
[1015]	278	ENDIF
	279	ENDDO
	280
	281	!
	282	!-- Apply prescribed horizontal wall heatflux where necessary
	283	DO k = 1, nzt
	284	IF ( k > nzb_s_inner(j,i) .AND. k <= nzb_s_outer(j,i) .AND. &
[1340]	285	( wall_w_x(j,i) /= 0.0_wp .OR. wall_w_y(j,i) /= 0.0_wp ) ) &
[1015]	286	THEN
[1320]	287	tend(k,j,i) = tend(k,j,i) &
[1340]	288	+ ( fwxp(j,i) * 0.5_wp * &
[1320]	289	( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) &
[1340]	290	+ ( 1.0_wp - fwxp(j,i) ) * wall_s_flux(1) &
	291	-fwxm(j,i) * 0.5_wp * &
[1320]	292	( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) &
[1340]	293	+ ( 1.0_wp - fwxm(j,i) ) * wall_s_flux(2) &
[1320]	294	) * ddx2 &
[1340]	295	+ ( fwyp(j,i) * 0.5_wp * &
[1320]	296	( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) &
[1340]	297	+ ( 1.0_wp - fwyp(j,i) ) * wall_s_flux(3) &
	298	-fwym(j,i) * 0.5_wp * &
[1320]	299	( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) &
[1340]	300	+ ( 1.0_wp - fwym(j,i) ) * wall_s_flux(4) &
[1015]	301	) * ddy2
	302	ENDIF
	303	ENDDO
	304
	305	!
	306	!-- Compute vertical diffusion. In case that surface fluxes have been
	307	!-- prescribed or computed at bottom and/or top, index k starts/ends at
	308	!-- nzb+2 or nzt-1, respectively.
	309	DO k = 1, nzt_diff
	310	IF ( k >= nzb_diff_s_inner(j,i) ) THEN
[1320]	311	tend(k,j,i) = tend(k,j,i) &
[1340]	312	+ 0.5_wp * ( &
[1320]	313	( kh(k,j,i) + kh(k+1,j,i) ) * ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) &
	314	- ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) &
[1340]	315	) * ddzw(k)
[1015]	316	ENDIF
	317	ENDDO
	318
	319	!
	320	!-- Vertical diffusion at the first computational gridpoint along
	321	!-- z-direction
	322	DO k = 1, nzt
	323	IF ( use_surface_fluxes .AND. k == nzb_s_inner(j,i)+1 ) THEN
[1320]	324	tend(k,j,i) = tend(k,j,i) &
[1340]	325	+ ( 0.5_wp * ( kh(k,j,i)+kh(k+1,j,i) )&
	326	* ( s(k+1,j,i)-s(k,j,i) ) &
	327	* ddzu(k+1) &
[1320]	328	+ s_flux_b(j,i) &
[1015]	329	) * ddzw(k)
	330	ENDIF
	331
	332	!
	333	!-- Vertical diffusion at the last computational gridpoint along
	334	!-- z-direction
	335	IF ( use_top_fluxes .AND. k == nzt ) THEN
	336	tend(k,j,i) = tend(k,j,i) &
	337	+ ( - s_flux_t(j,i) &
[1340]	338	- 0.5_wp * ( kh(k-1,j,i)+kh(k,j,i) )&
	339	* ( s(k,j,i)-s(k-1,j,i) ) &
	340	* ddzu(k) &
[1015]	341	) * ddzw(k)
	342	ENDIF
	343	ENDDO
	344
	345	ENDDO
	346	ENDDO
	347	!$acc end kernels
	348
	349	END SUBROUTINE diffusion_s_acc
	350
	351
	352	!------------------------------------------------------------------------------!
[1682]	353	! Description:
	354	! ------------
	355	!> Call for grid point i,j
[1]	356	!------------------------------------------------------------------------------!
[1001]	357	SUBROUTINE diffusion_s_ij( i, j, s, s_flux_b, s_flux_t, wall_s_flux )
[1]	358
[1320]	359	USE arrays_3d, &
	360	ONLY: ddzu, ddzw, kh, tend
	361
	362	USE control_parameters, &
	363	ONLY: use_surface_fluxes, use_top_fluxes
	364
	365	USE grid_variables, &
	366	ONLY: ddx2, ddy2, fwxm, fwxp, fwym, fwyp, wall_w_x, wall_w_y
	367
	368	USE indices, &
[1374]	369	ONLY: nxlg, nxrg, nyng, nysg, nzb, nzb_diff_s_inner, nzb_s_inner, &
[1320]	370	nzb_s_outer, nzt, nzt_diff
	371
	372	USE kinds
[1]	373
	374	IMPLICIT NONE
	375
[1682]	376	INTEGER(iwp) :: i !<
	377	INTEGER(iwp) :: j !<
	378	INTEGER(iwp) :: k !<
	379	REAL(wp) :: wall_s_flux(0:4) !<
	380	REAL(wp), DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b !<
	381	REAL(wp), DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_t !<
[1010]	382	#if defined( __nopointer )
[1682]	383	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s !<
[1010]	384	#else
[1682]	385	REAL(wp), DIMENSION(:,:,:), POINTER :: s !<
[1010]	386	#endif
[1]	387
	388	!
	389	!-- Compute horizontal diffusion
[19]	390	DO k = nzb_s_outer(j,i)+1, nzt
[1]	391
[1320]	392	tend(k,j,i) = tend(k,j,i) &
[1340]	393	+ 0.5_wp * ( &
[1320]	394	( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) &
	395	- ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) &
[1340]	396	) * ddx2 &
	397	+ 0.5_wp * ( &
[1320]	398	( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) &
	399	- ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) &
[1340]	400	) * ddy2
[1]	401	ENDDO
	402
	403	!
	404	!-- Apply prescribed horizontal wall heatflux where necessary
[1691]	405	IF ( ( wall_w_x(j,i) /= 0.0_wp ) .OR. ( wall_w_y(j,i) /= 0.0_wp ) ) &
[1]	406	THEN
	407	DO k = nzb_s_inner(j,i)+1, nzb_s_outer(j,i)
	408
[1320]	409	tend(k,j,i) = tend(k,j,i) &
[1340]	410	+ ( fwxp(j,i) * 0.5_wp * &
[1320]	411	( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) &
[1340]	412	+ ( 1.0_wp - fwxp(j,i) ) * wall_s_flux(1) &
	413	-fwxm(j,i) * 0.5_wp * &
[1320]	414	( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) &
[1340]	415	+ ( 1.0_wp - fwxm(j,i) ) * wall_s_flux(2) &
[1320]	416	) * ddx2 &
[1340]	417	+ ( fwyp(j,i) * 0.5_wp * &
[1320]	418	( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) &
[1340]	419	+ ( 1.0_wp - fwyp(j,i) ) * wall_s_flux(3) &
	420	-fwym(j,i) * 0.5_wp * &
[1320]	421	( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) &
[1340]	422	+ ( 1.0_wp - fwym(j,i) ) * wall_s_flux(4) &
[1]	423	) * ddy2
	424	ENDDO
	425	ENDIF
	426
	427	!
	428	!-- Compute vertical diffusion. In case that surface fluxes have been
[19]	429	!-- prescribed or computed at bottom and/or top, index k starts/ends at
	430	!-- nzb+2 or nzt-1, respectively.
	431	DO k = nzb_diff_s_inner(j,i), nzt_diff
[1]	432
[1320]	433	tend(k,j,i) = tend(k,j,i) &
[1340]	434	+ 0.5_wp * ( &
[1320]	435	( kh(k,j,i) + kh(k+1,j,i) ) * ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) &
	436	- ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) &
[1340]	437	) * ddzw(k)
[1]	438	ENDDO
	439
	440	!
[19]	441	!-- Vertical diffusion at the first computational gridpoint along z-direction
[1]	442	IF ( use_surface_fluxes ) THEN
	443
	444	k = nzb_s_inner(j,i)+1
	445
[1340]	446	tend(k,j,i) = tend(k,j,i) + ( 0.5_wp * ( kh(k,j,i)+kh(k+1,j,i) ) &
	447	* ( s(k+1,j,i)-s(k,j,i) ) &
	448	* ddzu(k+1) &
[1320]	449	+ s_flux_b(j,i) &
[19]	450	) * ddzw(k)
[1]	451
	452	ENDIF
	453
[19]	454	!
	455	!-- Vertical diffusion at the last computational gridpoint along z-direction
	456	IF ( use_top_fluxes ) THEN
	457
	458	k = nzt
	459
[1320]	460	tend(k,j,i) = tend(k,j,i) + ( - s_flux_t(j,i) &
[1340]	461	- 0.5_wp * ( kh(k-1,j,i)+kh(k,j,i) ) &
	462	* ( s(k,j,i)-s(k-1,j,i) ) &
	463	* ddzu(k) &
[19]	464	) * ddzw(k)
	465
	466	ENDIF
	467
[1]	468	END SUBROUTINE diffusion_s_ij
	469
	470	END MODULE diffusion_s_mod

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