source: palm/trunk/SOURCE/advec_w_pw.f90 @ 3547

Last change on this file since 3547 was 3547, checked in by suehring, 3 years ago

variable description added some routines

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1!> @file advec_w_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 1997-2018 Leibniz Universitaet Hannover
18!------------------------------------------------------------------------------!
19!
20! Current revisions:
21! -----------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: advec_w_pw.f90 3547 2018-11-21 13:21:24Z suehring $
27! variables documented
28!
29! 3538 2018-11-20 10:55:41Z suehring
30! Remove unnecessary double-masking of topography
31!
32! 2718 2018-01-02 08:49:38Z maronga
33! Corrected "Former revisions" section
34!
35! 2696 2017-12-14 17:12:51Z kanani
36! Change in file header (GPL part)
37!
38! 2233 2017-05-30 18:08:54Z suehring
39!
40! 2232 2017-05-30 17:47:52Z suehring
41! topography representation via flags
42!
43! 2000 2016-08-20 18:09:15Z knoop
44! Forced header and separation lines into 80 columns
45!
46! 1873 2016-04-18 14:50:06Z maronga
47! Module renamed (removed _mod)
48!
49!
50! 1850 2016-04-08 13:29:27Z maronga
51! Module renamed
52!
53!
54! 1682 2015-10-07 23:56:08Z knoop
55! Code annotations made doxygen readable
56!
57! 1353 2014-04-08 15:21:23Z heinze
58! REAL constants provided with KIND-attribute
59!
60! 1320 2014-03-20 08:40:49Z raasch
61! ONLY-attribute added to USE-statements,
62! kind-parameters added to all INTEGER and REAL declaration statements,
63! kinds are defined in new module kinds,
64! revision history before 2012 removed,
65! comment fields (!:) to be used for variable explanations added to
66! all variable declaration statements
67!
68! 1036 2012-10-22 13:43:42Z raasch
69! code put under GPL (PALM 3.9)
70!
71! Revision 1.1  1997/08/11 06:10:29  raasch
72! Initial revision
73!
74!
75! Description:
76! ------------
77!> Advection term for w velocity-component using Piacsek and Williams.
78!> Vertical advection at the first grid point above the surface is done with
79!> normal centred differences, because otherwise no information from the surface
80!> would be communicated upwards due to w=0 at k=nzb.
81!------------------------------------------------------------------------------!
82 MODULE advec_w_pw_mod
83 
84
85    PRIVATE
86    PUBLIC advec_w_pw
87
88    INTERFACE advec_w_pw
89       MODULE PROCEDURE advec_w_pw
90       MODULE PROCEDURE advec_w_pw_ij
91    END INTERFACE advec_w_pw
92 
93 CONTAINS
94
95
96!------------------------------------------------------------------------------!
97! Description:
98! ------------
99!> Call for all grid points
100!------------------------------------------------------------------------------!
101    SUBROUTINE advec_w_pw
102
103       USE arrays_3d,                                                          &
104           ONLY:  ddzu, tend, u, v, w
105
106       USE control_parameters,                                                 &
107           ONLY:  u_gtrans, v_gtrans
108
109       USE grid_variables,                                                     &
110           ONLY:  ddx, ddy
111
112       USE indices,                                                            &
113           ONLY:  nxl, nxr, nyn, nys, nzb, nzt
114
115       USE kinds
116
117
118       IMPLICIT NONE
119
120       INTEGER(iwp) ::  i !< grid index along x-direction
121       INTEGER(iwp) ::  j !< grid index along y-direction
122       INTEGER(iwp) ::  k !< grid index along z-direction
123       
124       REAL(wp)    ::  gu !< Galilei-transformation velocity along x
125       REAL(wp)    ::  gv !< Galilei-transformation velocity along y
126
127 
128       gu = 2.0_wp * u_gtrans
129       gv = 2.0_wp * v_gtrans
130       DO  i = nxl, nxr
131          DO  j = nys, nyn
132             DO  k = nzb+1, nzt
133                tend(k,j,i) = tend(k,j,i) - 0.25_wp * (                        &
134                         ( w(k,j,i+1) * ( u(k+1,j,i+1) + u(k,j,i+1) - gu )     &
135                         - w(k,j,i-1) * ( u(k+1,j,i) + u(k,j,i) - gu ) ) * ddx &
136                       + ( w(k,j+1,i) * ( v(k+1,j+1,i) + v(k,j+1,i) - gv )     &
137                         - w(k,j-1,i) * ( v(k+1,j,i) + v(k,j,i) - gv ) ) * ddy &
138                       + ( w(k+1,j,i) * ( w(k+1,j,i) + w(k,j,i) )              &
139                         - w(k-1,j,i) * ( w(k,j,i) + w(k-1,j,i) ) )            &
140                                                                  * ddzu(k+1)  &
141                                                      )
142             ENDDO
143          ENDDO
144       ENDDO
145
146    END SUBROUTINE advec_w_pw
147
148
149!------------------------------------------------------------------------------!
150! Description:
151! ------------
152!> Call for grid point i,j
153!------------------------------------------------------------------------------!
154    SUBROUTINE advec_w_pw_ij( i, j )
155
156       USE arrays_3d,                                                          &
157           ONLY:  ddzu, tend, u, v, w
158
159       USE control_parameters,                                                 &
160           ONLY:  u_gtrans, v_gtrans
161
162       USE grid_variables,                                                     &
163           ONLY:  ddx, ddy
164
165       USE indices,                                                            &
166           ONLY:  nzb, nzt
167
168       USE kinds
169
170
171       IMPLICIT NONE
172
173       INTEGER(iwp) ::  i !< grid index along x-direction
174       INTEGER(iwp) ::  j !< grid index along y-direction
175       INTEGER(iwp) ::  k !< grid index along z-direction
176       
177       REAL(wp)    ::  gu !< Galilei-transformation velocity along x
178       REAL(wp)    ::  gv !< Galilei-transformation velocity along y
179
180       gu = 2.0_wp * u_gtrans
181       gv = 2.0_wp * v_gtrans
182       DO  k = nzb+1, nzt
183          tend(k,j,i) = tend(k,j,i) - 0.25_wp * (                              &
184                         ( w(k,j,i+1) * ( u(k+1,j,i+1) + u(k,j,i+1) - gu )     &
185                         - w(k,j,i-1) * ( u(k+1,j,i) + u(k,j,i) - gu ) ) * ddx &
186                       + ( w(k,j+1,i) * ( v(k+1,j+1,i) + v(k,j+1,i) - gv )     &
187                         - w(k,j-1,i) * ( v(k+1,j,i) + v(k,j,i) - gv ) ) * ddy &
188                       + ( w(k+1,j,i) * ( w(k+1,j,i) + w(k,j,i) )              &
189                         - w(k-1,j,i) * ( w(k,j,i) + w(k-1,j,i) ) )            &
190                                                                  * ddzu(k+1)  &
191                                                )
192       ENDDO
193    END SUBROUTINE advec_w_pw_ij
194
195 END MODULE advec_w_pw_mod
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