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source: palm/trunk/SOURCE/advec_s_pw.f90 @ 4282

Last change on this file since 4282 was 4182, checked in by scharf, 5 years ago
corrected "Former revisions" section minor formatting in "Former revisions" section added "Author" section
Property svn:keywords set to `Id`
File size: 7.6 KB

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1	!> @file advec_s_pw.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
4	!
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.
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	!
17	! Copyright 1997-2019 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: advec_s_pw.f90 4182 2019-08-22 15:20:23Z schwenkel $
27	! Corrected "Former revisions" section
28	!
29	! 3927 2019-04-23 13:24:29Z raasch
30	! pointer attribute removed from scalar 3d-array for performance reasons
31	!
32	! 3665 2019-01-10 08:28:24Z raasch
33	! unused variables removed
34	!
35	! 3655 2019-01-07 16:51:22Z knoop
36	! nopointer option removed
37	!
38	! Revision 1.1 1997/08/29 08:54:20 raasch
39	! Initial revision
40	!
41	!
42	! Description:
43	! ------------
44	!> Advection term for scalar variables using the Piacsek and Williams scheme
45	!> (form C3). Contrary to PW itself, for reasons of accuracy their scheme is
46	!> slightly modified as follows: the values of those scalars that are used for
47	!> the computation of the flux divergence are reduced by the value of the
48	!> relevant scalar at the location where the difference is computed (sk(k,j,i)).
49	!> NOTE: at the first grid point above the surface computation still takes place!
50	!------------------------------------------------------------------------------!
51	MODULE advec_s_pw_mod
52
53
54	PRIVATE
55	PUBLIC advec_s_pw
56
57	INTERFACE advec_s_pw
58	MODULE PROCEDURE advec_s_pw
59	MODULE PROCEDURE advec_s_pw_ij
60	END INTERFACE
61
62	CONTAINS
63
64
65	!------------------------------------------------------------------------------!
66	! Description:
67	! ------------
68	!> Call for all grid points
69	!------------------------------------------------------------------------------!
70	SUBROUTINE advec_s_pw( sk )
71
72	USE arrays_3d, &
73	ONLY: dd2zu, tend, u, u_stokes_zu, v, v_stokes_zu, w
74
75	USE control_parameters, &
76	ONLY: u_gtrans, v_gtrans
77
78	USE grid_variables, &
79	ONLY: ddx, ddy
80
81	USE indices, &
82	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt
83
84	USE kinds
85
86
87	IMPLICIT NONE
88
89	INTEGER(iwp) :: i !< grid index along x-direction
90	INTEGER(iwp) :: j !< grid index along y-direction
91	INTEGER(iwp) :: k !< grid index along z-direction
92
93	REAL(wp) :: gu !< local additional advective velocity
94	REAL(wp) :: gv !< local additional advective velocity
95
96	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: sk
97
98
99	DO i = nxl, nxr
100	DO j = nys, nyn
101	DO k = nzb+1, nzt
102
103	!
104	!-- Galilean transformation + Stokes drift velocity (ocean only)
105	gu = u_gtrans - u_stokes_zu(k)
106	gv = v_gtrans - v_stokes_zu(k)
107
108	tend(k,j,i) = tend(k,j,i) + &
109	( -0.5_wp * ( ( u(k,j,i+1) - gu ) * &
110	( sk(k,j,i+1) - sk(k,j,i) ) &
111	- ( u(k,j,i) - gu ) * &
112	( sk(k,j,i-1) - sk(k,j,i) ) &
113	) * ddx &
114	-0.5_wp * ( ( v(k,j+1,i) - gv ) * &
115	( sk(k,j+1,i) - sk(k,j,i) ) &
116	- ( v(k,j,i) - gv ) * &
117	( sk(k,j-1,i) - sk(k,j,i) ) &
118	) * ddy &
119	- ( w(k,j,i) * &
120	( sk(k+1,j,i) - sk(k,j,i) ) &
121	- w(k-1,j,i) * &
122	( sk(k-1,j,i) - sk(k,j,i) ) &
123	) * dd2zu(k) &
124	)
125	ENDDO
126	ENDDO
127	ENDDO
128
129	END SUBROUTINE advec_s_pw
130
131
132	!------------------------------------------------------------------------------!
133	! Description:
134	! ------------
135	!> Call for grid point i,j
136	!------------------------------------------------------------------------------!
137	SUBROUTINE advec_s_pw_ij( i, j, sk )
138
139	USE arrays_3d, &
140	ONLY: dd2zu, tend, u, u_stokes_zu, v, v_stokes_zu, w
141
142	USE control_parameters, &
143	ONLY: u_gtrans, v_gtrans
144
145	USE grid_variables, &
146	ONLY: ddx, ddy
147
148	USE indices, &
149	ONLY: nxlg, nxrg, nyng, nysg, nzb, nzt
150
151	USE kinds
152
153
154	IMPLICIT NONE
155
156	INTEGER(iwp) :: i !< grid index along x-direction
157	INTEGER(iwp) :: j !< grid index along y-direction
158	INTEGER(iwp) :: k !< grid index along z-direction
159
160	REAL(wp) :: gu !< local additional advective velocity
161	REAL(wp) :: gv !< local additional advective velocity
162
163	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: sk
164
165
166	DO k = nzb+1, nzt
167
168	!
169	!-- Galilean transformation + Stokes drift velocity (ocean only)
170	gu = u_gtrans - u_stokes_zu(k)
171	gv = v_gtrans - v_stokes_zu(k)
172
173	tend(k,j,i) = tend(k,j,i) + &
174	( -0.5_wp * ( ( u(k,j,i+1) - gu ) * &
175	( sk(k,j,i+1) - sk(k,j,i) ) &
176	- ( u(k,j,i) - gu ) * &
177	( sk(k,j,i-1) - sk(k,j,i) ) &
178	) * ddx &
179	-0.5_wp * ( ( v(k,j+1,i) - gv ) * &
180	( sk(k,j+1,i) - sk(k,j,i) ) &
181	- ( v(k,j,i) - gv ) * &
182	( sk(k,j-1,i) - sk(k,j,i) ) &
183	) * ddy &
184	- ( w(k,j,i) * &
185	( sk(k+1,j,i) - sk(k,j,i) ) &
186	- w(k-1,j,i) * &
187	( sk(k-1,j,i) - sk(k,j,i) ) &
188	) * dd2zu(k) &
189	)
190	ENDDO
191
192	END SUBROUTINE advec_s_pw_ij
193
194	END MODULE advec_s_pw_mod

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