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source: palm/trunk/SOURCE/diffusion_w.f90 @ 2232

Last change on this file since 2232 was 2232, checked in by suehring, 7 years ago
Adjustments according new topography and surface-modelling concept implemented
Property svn:keywords set to `Id`
File size: 19.8 KB

Rev	Line
[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	!
[2101]	17	! Copyright 1997-2017 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[484]	20	! Current revisions:
[1]	21	! -----------------
[2232]	22	! Adjustments to new topography and surface concept
[1341]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: diffusion_w.f90 2232 2017-05-30 17:47:52Z suehring $
	27	!
[2119]	28	! 2118 2017-01-17 16:38:49Z raasch
	29	! OpenACC version of subroutine removed
	30	!
[2038]	31	! 2037 2016-10-26 11:15:40Z knoop
	32	! Anelastic approximation implemented
	33	!
[2001]	34	! 2000 2016-08-20 18:09:15Z knoop
	35	! Forced header and separation lines into 80 columns
	36	!
[1874]	37	! 1873 2016-04-18 14:50:06Z maronga
	38	! Module renamed (removed _mod)
	39	!
[1851]	40	! 1850 2016-04-08 13:29:27Z maronga
	41	! Module renamed
	42	!
[1683]	43	! 1682 2015-10-07 23:56:08Z knoop
	44	! Code annotations made doxygen readable
	45	!
[1375]	46	! 1374 2014-04-25 12:55:07Z raasch
	47	! vsws + vswst removed from acc-present-list
	48	!
[1354]	49	! 1353 2014-04-08 15:21:23Z heinze
	50	! REAL constants provided with KIND-attribute
	51	!
[1341]	52	! 1340 2014-03-25 19:45:13Z kanani
	53	! REAL constants defined as wp-kind
	54	!
[1323]	55	! 1322 2014-03-20 16:38:49Z raasch
	56	! REAL constants defined as wp-kind
	57	!
[1321]	58	! 1320 2014-03-20 08:40:49Z raasch
[1320]	59	! ONLY-attribute added to USE-statements,
	60	! kind-parameters added to all INTEGER and REAL declaration statements,
	61	! kinds are defined in new module kinds,
	62	! revision history before 2012 removed,
	63	! comment fields (!:) to be used for variable explanations added to
	64	! all variable declaration statements
[1]	65	!
[1258]	66	! 1257 2013-11-08 15:18:40Z raasch
	67	! openacc loop and loop vector clauses removed, declare create moved after
	68	! the FORTRAN declaration statement
	69	!
[1132]	70	! 1128 2013-04-12 06:19:32Z raasch
	71	! loop index bounds in accelerator version replaced by i_left, i_right, j_south,
	72	! j_north
	73	!
[1037]	74	! 1036 2012-10-22 13:43:42Z raasch
	75	! code put under GPL (PALM 3.9)
	76	!
[1017]	77	! 1015 2012-09-27 09:23:24Z raasch
	78	! accelerator version (*_acc) added
	79	!
[1002]	80	! 1001 2012-09-13 14:08:46Z raasch
	81	! arrays comunicated by module instead of parameter list
	82	!
[979]	83	! 978 2012-08-09 08:28:32Z fricke
	84	! outflow damping layer removed
	85	! kmxm_x/_z and kmxp_x/_z change to kmxm and kmxp
	86	! kmym_y/_z and kmyp_y/_z change to kmym and kmyp
	87	!
[1]	88	! Revision 1.1 1997/09/12 06:24:11 raasch
	89	! Initial revision
	90	!
	91	!
	92	! Description:
	93	! ------------
[1682]	94	!> Diffusion term of the w-component
[1]	95	!------------------------------------------------------------------------------!
[1682]	96	MODULE diffusion_w_mod
	97
[1]	98
	99	PRIVATE
[2118]	100	PUBLIC diffusion_w
[1]	101
	102	INTERFACE diffusion_w
	103	MODULE PROCEDURE diffusion_w
	104	MODULE PROCEDURE diffusion_w_ij
	105	END INTERFACE diffusion_w
	106
	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, &
[2037]	118	ONLY : ddzu, ddzw, km, tend, u, v, w, drho_air_zw, rho_air
[1320]	119
	120	USE control_parameters, &
	121	ONLY : topography
	122
	123	USE grid_variables, &
[2232]	124	ONLY : ddx, ddy
[1320]	125
	126	USE indices, &
[2232]	127	ONLY : nxl, nxr, nyn, nys, nzb, nzt, wall_flags_0
[1320]	128
	129	USE kinds
[1]	130
[2232]	131	USE surface_mod, &
	132	ONLY : surf_def_v, surf_lsm_v, surf_usm_v
	133
[1]	134	IMPLICIT NONE
	135
[2232]	136	INTEGER(iwp) :: i !< running index x direction
	137	INTEGER(iwp) :: j !< running index y direction
	138	INTEGER(iwp) :: k !< running index z direction
	139	INTEGER(iwp) :: l !< running index of surface type, south- or north-facing wall
	140	INTEGER(iwp) :: m !< running index surface elements
	141	INTEGER(iwp) :: surf_e !< End index of surface elements at (j,i)-gridpoint
	142	INTEGER(iwp) :: surf_s !< Start index of surface elements at (j,i)-gridpoint
[1320]	143
[2232]	144	REAL(wp) :: flag !< flag to mask topography grid points
	145	REAL(wp) :: kmxm !<
	146	REAL(wp) :: kmxp !<
	147	REAL(wp) :: kmym !<
	148	REAL(wp) :: kmyp !<
	149	REAL(wp) :: mask_west !< flag to mask vertical wall west of the grid point
	150	REAL(wp) :: mask_east !< flag to mask vertical wall east of the grid point
	151	REAL(wp) :: mask_south !< flag to mask vertical wall south of the grid point
	152	REAL(wp) :: mask_north !< flag to mask vertical wall north of the grid point
[1001]	153
[1]	154
	155
	156	DO i = nxl, nxr
	157	DO j = nys, nyn
[2232]	158	DO k = nzb+1, nzt-1
[1]	159	!
[2232]	160	!-- Predetermine flag to mask topography and wall-bounded grid points.
	161	flag = MERGE( 1.0_wp, 0.0_wp, &
	162	BTEST( wall_flags_0(k,j,i), 3 ) )
	163	mask_east = MERGE( 1.0_wp, 0.0_wp, &
	164	BTEST( wall_flags_0(k,j,i+1), 3 ) )
	165	mask_west = MERGE( 1.0_wp, 0.0_wp, &
	166	BTEST( wall_flags_0(k,j,i-1), 3 ) )
	167	mask_south = MERGE( 1.0_wp, 0.0_wp, &
	168	BTEST( wall_flags_0(k,j-1,i), 3 ) )
	169	mask_north = MERGE( 1.0_wp, 0.0_wp, &
	170	BTEST( wall_flags_0(k,j+1,i), 3 ) )
	171	!
[1]	172	!-- Interpolate eddy diffusivities on staggered gridpoints
[2232]	173	kmxp = 0.25_wp * ( km(k,j,i) + km(k,j,i+1) + &
	174	km(k+1,j,i) + km(k+1,j,i+1) )
	175	kmxm = 0.25_wp * ( km(k,j,i) + km(k,j,i-1) + &
	176	km(k+1,j,i) + km(k+1,j,i-1) )
	177	kmyp = 0.25_wp * ( km(k,j,i) + km(k+1,j,i) + &
	178	km(k,j+1,i) + km(k+1,j+1,i) )
	179	kmym = 0.25_wp * ( km(k,j,i) + km(k+1,j,i) + &
	180	km(k,j-1,i) + km(k+1,j-1,i) )
[1]	181
	182	tend(k,j,i) = tend(k,j,i) &
[2232]	183	+ ( mask_east * kmxp * ( &
	184	( w(k,j,i+1) - w(k,j,i) ) * ddx &
	185	+ ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	186	) &
	187	- mask_west * kmxm * ( &
	188	( w(k,j,i) - w(k,j,i-1) ) * ddx &
	189	+ ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	190	) &
	191	) * ddx * flag &
	192	+ ( mask_north * kmyp * ( &
	193	( w(k,j+1,i) - w(k,j,i) ) * ddy &
	194	+ ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	195	) &
	196	- mask_south * kmym * ( &
	197	( w(k,j,i) - w(k,j-1,i) ) * ddy &
	198	+ ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	199	) &
	200	) * ddy * flag &
	201	+ 2.0_wp * ( &
	202	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	203	* rho_air(k+1) &
	204	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	205	* rho_air(k) &
	206	) * ddzu(k+1) * drho_air_zw(k) * flag
[1]	207	ENDDO
	208
	209	!
[2232]	210	!-- Add horizontal momentum flux v'w' at north- (l=0) and south-facing (l=1)
	211	!-- surfaces. Note, in the the flat case, loops won't be entered as
	212	!-- start_index > end_index. Furtermore, note, no vertical natural surfaces
	213	!-- so far.
	214	!-- Default-type surfaces
	215	DO l = 0, 1
	216	surf_s = surf_def_v(l)%start_index(j,i)
	217	surf_e = surf_def_v(l)%end_index(j,i)
	218	DO m = surf_s, surf_e
	219	k = surf_def_v(l)%k(m)
	220	tend(k,j,i) = tend(k,j,i) + &
	221	surf_def_v(l)%mom_flux_w(m) * ddy
	222	ENDDO
	223	ENDDO
[1]	224	!
[2232]	225	!-- Natural-type surfaces
	226	DO l = 0, 1
	227	surf_s = surf_lsm_v(l)%start_index(j,i)
	228	surf_e = surf_lsm_v(l)%end_index(j,i)
	229	DO m = surf_s, surf_e
	230	k = surf_lsm_v(l)%k(m)
	231	tend(k,j,i) = tend(k,j,i) + &
	232	surf_lsm_v(l)%mom_flux_w(m) * ddy
	233	ENDDO
	234	ENDDO
	235	!
	236	!-- Urban-type surfaces
	237	DO l = 0, 1
	238	surf_s = surf_usm_v(l)%start_index(j,i)
	239	surf_e = surf_usm_v(l)%end_index(j,i)
	240	DO m = surf_s, surf_e
	241	k = surf_usm_v(l)%k(m)
	242	tend(k,j,i) = tend(k,j,i) + &
	243	surf_usm_v(l)%mom_flux_w(m) * ddy
	244	ENDDO
	245	ENDDO
	246	!
	247	!-- Add horizontal momentum flux u'w' at east- (l=2) and west-facing (l=3)
	248	!-- surface.
	249	!-- Default-type surfaces
	250	DO l = 2, 3
	251	surf_s = surf_def_v(l)%start_index(j,i)
	252	surf_e = surf_def_v(l)%end_index(j,i)
	253	DO m = surf_s, surf_e
	254	k = surf_def_v(l)%k(m)
	255	tend(k,j,i) = tend(k,j,i) + &
	256	surf_def_v(l)%mom_flux_w(m) * ddx
	257	ENDDO
	258	ENDDO
	259	!
	260	!-- Natural-type surfaces
	261	DO l = 2, 3
	262	surf_s = surf_lsm_v(l)%start_index(j,i)
	263	surf_e = surf_lsm_v(l)%end_index(j,i)
	264	DO m = surf_s, surf_e
	265	k = surf_lsm_v(l)%k(m)
	266	tend(k,j,i) = tend(k,j,i) + &
	267	surf_lsm_v(l)%mom_flux_w(m) * ddx
	268	ENDDO
	269	ENDDO
	270	!
	271	!-- Urban-type surfaces
	272	DO l = 2, 3
	273	surf_s = surf_usm_v(l)%start_index(j,i)
	274	surf_e = surf_usm_v(l)%end_index(j,i)
	275	DO m = surf_s, surf_e
	276	k = surf_usm_v(l)%k(m)
	277	tend(k,j,i) = tend(k,j,i) + &
	278	surf_usm_v(l)%mom_flux_w(m) * ddx
	279	ENDDO
	280	ENDDO
[1]	281
	282	ENDDO
	283	ENDDO
	284
	285	END SUBROUTINE diffusion_w
	286
	287
	288	!------------------------------------------------------------------------------!
[1682]	289	! Description:
	290	! ------------
	291	!> Call for grid point i,j
[1]	292	!------------------------------------------------------------------------------!
[1001]	293	SUBROUTINE diffusion_w_ij( i, j )
[1]	294
[1320]	295	USE arrays_3d, &
[2037]	296	ONLY : ddzu, ddzw, km, tend, u, v, w, drho_air_zw, rho_air
[1320]	297
	298	USE control_parameters, &
	299	ONLY : topography
	300
	301	USE grid_variables, &
[2232]	302	ONLY : ddx, ddy
[1320]	303
	304	USE indices, &
[2232]	305	ONLY : nxl, nxr, nyn, nys, nzb, nzt, wall_flags_0
[1320]	306
	307	USE kinds
[1]	308
[2232]	309	USE surface_mod, &
	310	ONLY : surf_def_v, surf_lsm_v, surf_usm_v
	311
[1]	312	IMPLICIT NONE
	313
[2232]	314
	315	INTEGER(iwp) :: i !< running index x direction
	316	INTEGER(iwp) :: j !< running index y direction
	317	INTEGER(iwp) :: k !< running index z direction
	318	INTEGER(iwp) :: l !< running index of surface type, south- or north-facing wall
	319	INTEGER(iwp) :: m !< running index surface elements
	320	INTEGER(iwp) :: surf_e !< End index of surface elements at (j,i)-gridpoint
	321	INTEGER(iwp) :: surf_s !< Start index of surface elements at (j,i)-gridpoint
[1320]	322
[2232]	323	REAL(wp) :: flag !< flag to mask topography grid points
	324	REAL(wp) :: kmxm !<
	325	REAL(wp) :: kmxp !<
	326	REAL(wp) :: kmym !<
	327	REAL(wp) :: kmyp !<
	328	REAL(wp) :: mask_west !< flag to mask vertical wall west of the grid point
	329	REAL(wp) :: mask_east !< flag to mask vertical wall east of the grid point
	330	REAL(wp) :: mask_south !< flag to mask vertical wall south of the grid point
	331	REAL(wp) :: mask_north !< flag to mask vertical wall north of the grid point
[1]	332
	333
[2232]	334	DO k = nzb+1, nzt-1
[1]	335	!
[2232]	336	!-- Predetermine flag to mask topography and wall-bounded grid points.
	337	flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j,i), 3 ) )
	338	mask_east = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j,i+1), 3 ) )
	339	mask_west = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j,i-1), 3 ) )
	340	mask_south = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j-1,i), 3 ) )
	341	mask_north = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_0(k,j+1,i), 3 ) )
	342	!
[1]	343	!-- Interpolate eddy diffusivities on staggered gridpoints
[1322]	344	kmxp = 0.25_wp * ( km(k,j,i)+km(k,j,i+1)+km(k+1,j,i)+km(k+1,j,i+1) )
	345	kmxm = 0.25_wp * ( km(k,j,i)+km(k,j,i-1)+km(k+1,j,i)+km(k+1,j,i-1) )
	346	kmyp = 0.25_wp * ( km(k,j,i)+km(k+1,j,i)+km(k,j+1,i)+km(k+1,j+1,i) )
	347	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]	348
	349	tend(k,j,i) = tend(k,j,i) &
[2232]	350	+ ( mask_east * kmxp * ( &
	351	( w(k,j,i+1) - w(k,j,i) ) * ddx &
	352	+ ( u(k+1,j,i+1) - u(k,j,i+1) ) * ddzu(k+1) &
	353	) &
	354	- mask_west * kmxm * ( &
	355	( w(k,j,i) - w(k,j,i-1) ) * ddx &
	356	+ ( u(k+1,j,i) - u(k,j,i) ) * ddzu(k+1) &
	357	) &
	358	) * ddx * flag &
	359	+ ( mask_north * kmyp * ( &
	360	( w(k,j+1,i) - w(k,j,i) ) * ddy &
	361	+ ( v(k+1,j+1,i) - v(k,j+1,i) ) * ddzu(k+1) &
	362	) &
	363	- mask_south * kmym * ( &
	364	( w(k,j,i) - w(k,j-1,i) ) * ddy &
	365	+ ( v(k+1,j,i) - v(k,j,i) ) * ddzu(k+1) &
	366	) &
	367	) * ddy * flag &
	368	+ 2.0_wp * ( &
	369	km(k+1,j,i) * ( w(k+1,j,i) - w(k,j,i) ) * ddzw(k+1) &
	370	* rho_air(k+1) &
	371	- km(k,j,i) * ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) &
	372	* rho_air(k) &
	373	) * ddzu(k+1) * drho_air_zw(k) * flag
[1]	374	ENDDO
	375	!
[2232]	376	!-- Add horizontal momentum flux v'w' at north- (l=0) and south-facing (l=1)
	377	!-- surfaces. Note, in the the flat case, loops won't be entered as
	378	!-- start_index > end_index. Furtermore, note, no vertical natural surfaces
	379	!-- so far.
	380	!-- Default-type surfaces
	381	DO l = 0, 1
	382	surf_s = surf_def_v(l)%start_index(j,i)
	383	surf_e = surf_def_v(l)%end_index(j,i)
	384	DO m = surf_s, surf_e
	385	k = surf_def_v(l)%k(m)
	386	tend(k,j,i) = tend(k,j,i) + &
	387	surf_def_v(l)%mom_flux_w(m) * ddy
	388	ENDDO
	389	ENDDO
[51]	390	!
[2232]	391	!-- Natural-type surfaces
	392	DO l = 0, 1
	393	surf_s = surf_lsm_v(l)%start_index(j,i)
	394	surf_e = surf_lsm_v(l)%end_index(j,i)
	395	DO m = surf_s, surf_e
	396	k = surf_lsm_v(l)%k(m)
	397	tend(k,j,i) = tend(k,j,i) + &
	398	surf_lsm_v(l)%mom_flux_w(m) * ddy
	399	ENDDO
	400	ENDDO
[1]	401	!
[2232]	402	!-- Urban-type surfaces
	403	DO l = 0, 1
	404	surf_s = surf_usm_v(l)%start_index(j,i)
	405	surf_e = surf_usm_v(l)%end_index(j,i)
	406	DO m = surf_s, surf_e
	407	k = surf_usm_v(l)%k(m)
	408	tend(k,j,i) = tend(k,j,i) + &
	409	surf_usm_v(l)%mom_flux_w(m) * ddy
	410	ENDDO
	411	ENDDO
	412	!
	413	!-- Add horizontal momentum flux u'w' at east- (l=2) and west-facing (l=3)
	414	!-- surfaces.
	415	!-- Default-type surfaces
	416	DO l = 2, 3
	417	surf_s = surf_def_v(l)%start_index(j,i)
	418	surf_e = surf_def_v(l)%end_index(j,i)
	419	DO m = surf_s, surf_e
	420	k = surf_def_v(l)%k(m)
	421	tend(k,j,i) = tend(k,j,i) + &
	422	surf_def_v(l)%mom_flux_w(m) * ddx
	423	ENDDO
	424	ENDDO
	425	!
	426	!-- Natural-type surfaces
	427	DO l = 2, 3
	428	surf_s = surf_lsm_v(l)%start_index(j,i)
	429	surf_e = surf_lsm_v(l)%end_index(j,i)
	430	DO m = surf_s, surf_e
	431	k = surf_lsm_v(l)%k(m)
	432	tend(k,j,i) = tend(k,j,i) + &
	433	surf_lsm_v(l)%mom_flux_w(m) * ddx
	434	ENDDO
	435	ENDDO
	436	!
	437	!-- Urban-type surfaces
	438	DO l = 2, 3
	439	surf_s = surf_usm_v(l)%start_index(j,i)
	440	surf_e = surf_usm_v(l)%end_index(j,i)
	441	DO m = surf_s, surf_e
	442	k = surf_usm_v(l)%k(m)
	443	tend(k,j,i) = tend(k,j,i) + &
	444	surf_usm_v(l)%mom_flux_w(m) * ddx
	445	ENDDO
	446	ENDDO
[1]	447
	448
	449	END SUBROUTINE diffusion_w_ij
	450
[1323]	451	END MODULE diffusion_w_mod

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