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source: palm/trunk/SOURCE/diffusion_e.f90 @ 2221

Last change on this file since 2221 was 2119, checked in by raasch, 8 years ago
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[1873]	1	!> @file diffusion_e.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	! -----------------
[1341]	22	!
[2119]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: diffusion_e.f90 2119 2017-01-17 16:51:50Z kanani $
	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	! Adapted for modularization of microphysics
	43	!
[1832]	44	! 1831 2016-04-07 13:15:51Z hoffmann
	45	! turbulence renamed collision_turbulence
	46	!
[1683]	47	! 1682 2015-10-07 23:56:08Z knoop
	48	! Code annotations made doxygen readable
	49	!
[1375]	50	! 1374 2014-04-25 12:55:07Z raasch
	51	! missing variables added to ONLY list
	52	! rif removed from acc-present-list
	53	!
[1341]	54	! 1340 2014-03-25 19:45:13Z kanani
	55	! REAL constants defined as wp-kind
	56	!
[1321]	57	! 1320 2014-03-20 08:40:49Z raasch
[1320]	58	! ONLY-attribute added to USE-statements,
	59	! kind-parameters added to all INTEGER and REAL declaration statements,
	60	! kinds are defined in new module kinds,
	61	! revision history before 2012 removed,
	62	! comment fields (!:) to be used for variable explanations added to
	63	! all variable declaration statements
[98]	64	!
[1258]	65	! 1257 2013-11-08 15:18:40Z raasch
	66	! openacc loop and loop vector clauses removed
	67	!
[1182]	68	! 1179 2013-06-14 05:57:58Z raasch
	69	! use_reference renamed use_single_reference_value
	70	!
[1172]	71	! 1171 2013-05-30 11:27:45Z raasch
	72	! use_reference-case activated in accelerator version
	73	!
[1132]	74	! 1128 2013-04-12 06:19:32Z raasch
	75	! loop index bounds in accelerator version replaced by i_left, i_right, j_south,
	76	! j_north
	77	!
[1066]	78	! 1065 2012-11-22 17:42:36Z hoffmann
	79	! Enabled the claculation of diss in case of turbulence = .TRUE. (parameterized
	80	! effects of turbulence on autoconversion and accretion in two-moments cloud
	81	! physics scheme).
	82	!
[1037]	83	! 1036 2012-10-22 13:43:42Z raasch
	84	! code put under GPL (PALM 3.9)
	85	!
[1017]	86	! 1015 2012-09-27 09:23:24Z raasch
	87	! accelerator version (*_acc) added,
	88	! adjustment of mixing length to the Prandtl mixing length at first grid point
	89	! above ground removed
	90	!
[1011]	91	! 1010 2012-09-20 07:59:54Z raasch
	92	! cpp switch __nopointer added for pointer free version
	93	!
[1002]	94	! 1001 2012-09-13 14:08:46Z raasch
	95	! most arrays comunicated by module instead of parameter list
	96	!
[826]	97	! 825 2012-02-19 03:03:44Z raasch
	98	! wang_collision_kernel renamed wang_kernel
	99	!
[1]	100	! Revision 1.1 1997/09/19 07:40:24 raasch
	101	! Initial revision
	102	!
	103	!
	104	! Description:
	105	! ------------
[1682]	106	!> Diffusion- and dissipation terms for the TKE
[1]	107	!------------------------------------------------------------------------------!
[1682]	108	MODULE diffusion_e_mod
	109
[1]	110
	111	PRIVATE
[2118]	112	PUBLIC diffusion_e
[1]	113
	114
	115	INTERFACE diffusion_e
	116	MODULE PROCEDURE diffusion_e
	117	MODULE PROCEDURE diffusion_e_ij
	118	END INTERFACE diffusion_e
	119
	120	CONTAINS
	121
	122
	123	!------------------------------------------------------------------------------!
[1682]	124	! Description:
	125	! ------------
	126	!> Call for all grid points
[1]	127	!------------------------------------------------------------------------------!
[1001]	128	SUBROUTINE diffusion_e( var, var_reference )
[1]	129
[1320]	130	USE arrays_3d, &
[2037]	131	ONLY: dd2zu, ddzu, ddzw, diss, e, km, l_grid, tend, zu, zw, &
	132	drho_air, rho_air_zw
[1320]	133
	134	USE control_parameters, &
[1831]	135	ONLY: atmos_ocean_sign, g, use_single_reference_value, &
[1320]	136	wall_adjustment, wall_adjustment_factor
[1831]	137
[1320]	138	USE grid_variables, &
	139	ONLY: ddx2, ddy2
	140
	141	USE indices, &
[1374]	142	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzb_s_inner,&
	143	nzt
[1320]	144
	145	USE kinds
[1849]	146
	147	USE microphysics_mod, &
	148	ONLY: collision_turbulence
	149
[1320]	150	USE particle_attributes, &
	151	ONLY: use_sgs_for_particles, wang_kernel
[1]	152
	153	IMPLICIT NONE
	154
[1682]	155	INTEGER(iwp) :: i !<
	156	INTEGER(iwp) :: j !<
	157	INTEGER(iwp) :: k !<
	158	REAL(wp) :: dvar_dz !<
	159	REAL(wp) :: l_stable !<
	160	REAL(wp) :: var_reference !<
[1001]	161
[1010]	162	#if defined( __nopointer )
[1682]	163	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !<
[1010]	164	#else
[1682]	165	REAL(wp), DIMENSION(:,:,:), POINTER :: var !<
[1010]	166	#endif
[1682]	167	REAL(wp), DIMENSION(nzb+1:nzt,nys:nyn) :: dissipation !<
	168	REAL(wp), DIMENSION(nzb+1:nzt,nys:nyn) :: l !<
	169	REAL(wp), DIMENSION(nzb+1:nzt,nys:nyn) :: ll !<
[1]	170
	171
	172	!
[65]	173	!-- This if clause must be outside the k-loop because otherwise
	174	!-- runtime errors occur with -C hopt on NEC
[1179]	175	IF ( use_single_reference_value ) THEN
[65]	176
	177	DO i = nxl, nxr
	178	DO j = nys, nyn
	179	DO k = nzb_s_inner(j,i)+1, nzt
[1]	180	!
[65]	181	!-- Calculate the mixing length (for dissipation)
[97]	182	dvar_dz = atmos_ocean_sign * &
	183	( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k)
[1340]	184	IF ( dvar_dz > 0.0_wp ) THEN
	185	l_stable = 0.76_wp * SQRT( e(k,j,i) ) / &
	186	SQRT( g / var_reference * dvar_dz ) + 1E-5_wp
[57]	187	ELSE
[65]	188	l_stable = l_grid(k)
[57]	189	ENDIF
[1]	190	!
[65]	191	!-- Adjustment of the mixing length
	192	IF ( wall_adjustment ) THEN
[94]	193	l(k,j) = MIN( wall_adjustment_factor * &
	194	( zu(k) - zw(nzb_s_inner(j,i)) ), &
	195	l_grid(k), l_stable )
	196	ll(k,j) = MIN( wall_adjustment_factor * &
	197	( zu(k) - zw(nzb_s_inner(j,i)) ), &
	198	l_grid(k) )
[65]	199	ELSE
	200	l(k,j) = MIN( l_grid(k), l_stable )
	201	ll(k,j) = l_grid(k)
	202	ENDIF
[1]	203
[65]	204	ENDDO
[1]	205	ENDDO
[65]	206
[1]	207	!
[65]	208	!-- Calculate the tendency terms
	209	DO j = nys, nyn
	210	DO k = nzb_s_inner(j,i)+1, nzt
[1]	211
[1340]	212	dissipation(k,j) = ( 0.19_wp + 0.74_wp * l(k,j) / ll(k,j) ) * &
[65]	213	e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j)
[1]	214
[65]	215	tend(k,j,i) = tend(k,j,i) &
[1]	216	+ ( &
	217	( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) &
	218	- ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) &
	219	) * ddx2 &
	220	+ ( &
	221	( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) &
	222	- ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) &
	223	) * ddy2 &
	224	+ ( &
	225	( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) &
[2037]	226	* rho_air_zw(k) &
[1]	227	- ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) &
[2037]	228	* rho_air_zw(k-1) &
	229	) * ddzw(k) * drho_air(k) &
[1]	230	- dissipation(k,j)
	231
[65]	232	ENDDO
[1]	233	ENDDO
[65]	234
	235	!
	236	!-- Store dissipation if needed for calculating the sgs particle
	237	!-- velocities
[1065]	238	IF ( use_sgs_for_particles .OR. wang_kernel .OR. &
[1831]	239	collision_turbulence ) THEN
[65]	240	DO j = nys, nyn
	241	DO k = nzb_s_inner(j,i)+1, nzt
	242	diss(k,j,i) = dissipation(k,j)
	243	ENDDO
	244	ENDDO
	245	ENDIF
	246
[1]	247	ENDDO
	248
[65]	249	ELSE
	250
	251	DO i = nxl, nxr
	252	DO j = nys, nyn
	253	DO k = nzb_s_inner(j,i)+1, nzt
	254	!
	255	!-- Calculate the mixing length (for dissipation)
[97]	256	dvar_dz = atmos_ocean_sign * &
	257	( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k)
[1340]	258	IF ( dvar_dz > 0.0_wp ) THEN
	259	l_stable = 0.76_wp * SQRT( e(k,j,i) ) / &
	260	SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5_wp
[65]	261	ELSE
	262	l_stable = l_grid(k)
	263	ENDIF
	264	!
	265	!-- Adjustment of the mixing length
	266	IF ( wall_adjustment ) THEN
[94]	267	l(k,j) = MIN( wall_adjustment_factor * &
	268	( zu(k) - zw(nzb_s_inner(j,i)) ), &
	269	l_grid(k), l_stable )
	270	ll(k,j) = MIN( wall_adjustment_factor * &
	271	( zu(k) - zw(nzb_s_inner(j,i)) ), &
	272	l_grid(k) )
[65]	273	ELSE
	274	l(k,j) = MIN( l_grid(k), l_stable )
	275	ll(k,j) = l_grid(k)
	276	ENDIF
	277
	278	ENDDO
	279	ENDDO
	280
	281	!
	282	!-- Calculate the tendency terms
[1]	283	DO j = nys, nyn
[19]	284	DO k = nzb_s_inner(j,i)+1, nzt
[65]	285
[1340]	286	dissipation(k,j) = ( 0.19_wp + 0.74_wp * l(k,j) / ll(k,j) ) * &
	287	e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j)
[65]	288
	289	tend(k,j,i) = tend(k,j,i) &
	290	+ ( &
	291	( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) &
	292	- ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) &
	293	) * ddx2 &
	294	+ ( &
	295	( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) &
	296	- ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) &
	297	) * ddy2 &
	298	+ ( &
	299	( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) &
[2037]	300	* rho_air_zw(k) &
[65]	301	- ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) &
[2037]	302	* rho_air_zw(k-1) &
	303	) * ddzw(k) * drho_air(k) &
[65]	304	- dissipation(k,j)
	305
[1]	306	ENDDO
	307	ENDDO
	308
[65]	309	!
	310	!-- Store dissipation if needed for calculating the sgs particle
	311	!-- velocities
[1065]	312	IF ( use_sgs_for_particles .OR. wang_kernel .OR. &
[1831]	313	collision_turbulence ) THEN
[65]	314	DO j = nys, nyn
	315	DO k = nzb_s_inner(j,i)+1, nzt
	316	diss(k,j,i) = dissipation(k,j)
	317	ENDDO
	318	ENDDO
	319	ENDIF
[1]	320
[65]	321	ENDDO
	322
	323	ENDIF
	324
[1]	325	!
	326	!-- Boundary condition for dissipation
[1849]	327	IF ( use_sgs_for_particles .OR. wang_kernel .OR. &
[1831]	328	collision_turbulence ) THEN
[1]	329	DO i = nxl, nxr
	330	DO j = nys, nyn
	331	diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i)
	332	ENDDO
	333	ENDDO
	334	ENDIF
	335
	336	END SUBROUTINE diffusion_e
	337
	338
	339	!------------------------------------------------------------------------------!
[1682]	340	! Description:
	341	! ------------
	342	!> Call for grid point i,j
[1]	343	!------------------------------------------------------------------------------!
[1001]	344	SUBROUTINE diffusion_e_ij( i, j, var, var_reference )
[1]	345
[1320]	346	USE arrays_3d, &
[2037]	347	ONLY: dd2zu, ddzu, ddzw, diss, e, km, l_grid, tend, zu, zw, &
	348	drho_air, rho_air_zw
[1320]	349
	350	USE control_parameters, &
[1831]	351	ONLY: atmos_ocean_sign, g, use_single_reference_value, &
[1320]	352	wall_adjustment, wall_adjustment_factor
[1831]	353
[1320]	354	USE grid_variables, &
	355	ONLY: ddx2, ddy2
	356
	357	USE indices, &
[1374]	358	ONLY: nxlg, nxrg, nyng, nysg, nzb, nzb_s_inner, nzt
[1320]	359
	360	USE kinds
[1849]	361
	362	USE microphysics_mod, &
	363	ONLY: collision_turbulence
	364
[1320]	365	USE particle_attributes, &
	366	ONLY: use_sgs_for_particles, wang_kernel
[1]	367
	368	IMPLICIT NONE
	369
[1682]	370	INTEGER(iwp) :: i !<
	371	INTEGER(iwp) :: j !<
	372	INTEGER(iwp) :: k !<
	373	REAL(wp) :: dvar_dz !<
	374	REAL(wp) :: l_stable !<
	375	REAL(wp) :: var_reference !<
[1]	376
[1010]	377	#if defined( __nopointer )
[1682]	378	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !<
[1010]	379	#else
[1682]	380	REAL(wp), DIMENSION(:,:,:), POINTER :: var !<
[1010]	381	#endif
[1682]	382	REAL(wp), DIMENSION(nzb+1:nzt) :: dissipation !<
	383	REAL(wp), DIMENSION(nzb+1:nzt) :: l !<
	384	REAL(wp), DIMENSION(nzb+1:nzt) :: ll !<
[1]	385
[1001]	386
[1]	387	!
	388	!-- Calculate the mixing length (for dissipation)
[19]	389	DO k = nzb_s_inner(j,i)+1, nzt
[97]	390	dvar_dz = atmos_ocean_sign * &
	391	( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k)
[1340]	392	IF ( dvar_dz > 0.0_wp ) THEN
[1179]	393	IF ( use_single_reference_value ) THEN
[1340]	394	l_stable = 0.76_wp * SQRT( e(k,j,i) ) / &
	395	SQRT( g / var_reference * dvar_dz ) + 1E-5_wp
[57]	396	ELSE
[1340]	397	l_stable = 0.76_wp * SQRT( e(k,j,i) ) / &
	398	SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5_wp
[57]	399	ENDIF
[1]	400	ELSE
	401	l_stable = l_grid(k)
	402	ENDIF
	403	!
	404	!-- Adjustment of the mixing length
	405	IF ( wall_adjustment ) THEN
[94]	406	l(k) = MIN( wall_adjustment_factor * &
	407	( zu(k) - zw(nzb_s_inner(j,i)) ), l_grid(k), &
	408	l_stable )
	409	ll(k) = MIN( wall_adjustment_factor * &
	410	( zu(k) - zw(nzb_s_inner(j,i)) ), l_grid(k) )
[1]	411	ELSE
	412	l(k) = MIN( l_grid(k), l_stable )
	413	ll(k) = l_grid(k)
	414	ENDIF
	415	!
	416	!-- Calculate the tendency term
[1340]	417	dissipation(k) = ( 0.19_wp + 0.74_wp * l(k) / ll(k) ) * e(k,j,i) * &
	418	SQRT( e(k,j,i) ) / l(k)
[1]	419
	420	tend(k,j,i) = tend(k,j,i) &
	421	+ ( &
	422	( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) &
	423	- ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) &
	424	) * ddx2 &
	425	+ ( &
	426	( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) &
	427	- ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) &
	428	) * ddy2 &
	429	+ ( &
	430	( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) &
[2037]	431	* rho_air_zw(k) &
[1]	432	- ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) &
[2037]	433	* rho_air_zw(k-1) &
	434	) * ddzw(k) * drho_air(k) &
[1]	435	- dissipation(k)
	436
	437	ENDDO
	438
	439	!
	440	!-- Store dissipation if needed for calculating the sgs particle velocities
[1849]	441	IF ( use_sgs_for_particles .OR. wang_kernel .OR. &
	442	collision_turbulence ) THEN
[19]	443	DO k = nzb_s_inner(j,i)+1, nzt
[1]	444	diss(k,j,i) = dissipation(k)
	445	ENDDO
	446	!
	447	!-- Boundary condition for dissipation
	448	diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i)
	449	ENDIF
	450
	451	END SUBROUTINE diffusion_e_ij
	452
	453	END MODULE diffusion_e_mod

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