source: palm/trunk/SOURCE/init_pt_anomaly.f90 @ 2696

Last change on this file since 2696 was 2696, checked in by kanani, 4 years ago

Merge of branch palm4u into trunk

  • Property svn:keywords set to Id
File size: 3.6 KB
Line 
1!> @file init_pt_anomaly.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 1997-2017 Leibniz Universitaet Hannover
18!------------------------------------------------------------------------------!
19!
20! Current revisions:
21! -----------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: init_pt_anomaly.f90 2696 2017-12-14 17:12:51Z kanani $
27!
28! 2000 2016-08-20 18:09:15Z knoop
29! Forced header and separation lines into 80 columns
30!
31! 1682 2015-10-07 23:56:08Z knoop
32! Code annotations made doxygen readable
33!
34! 1353 2014-04-08 15:21:23Z heinze
35! REAL constants provided with KIND-attribute
36!
37! 1322 2014-03-20 16:38:49Z raasch
38! REAL constants defined as wp_kind
39!
40! 1320 2014-03-20 08:40:49Z raasch
41! ONLY-attribute added to USE-statements,
42! kind-parameters added to all INTEGER and REAL declaration statements,
43! kinds are defined in new module kinds,
44! revision history before 2012 removed,
45! comment fields (!:) to be used for variable explanations added to
46! all variable declaration statements
47!
48! 1036 2012-10-22 13:43:42Z raasch
49! code put under GPL (PALM 3.9)
50!
51! 861 2012-03-26 14:18:34Z suehring
52! Modification of the amplitude to obtain a visible temperature perturbation.
53!
54! Revision 1.1  1997/08/29 08:58:56  raasch
55! Initial revision
56!
57!
58! Description:
59! ------------
60!> Impose a temperature perturbation for an advection test.
61!------------------------------------------------------------------------------!
62 SUBROUTINE init_pt_anomaly
63 
64
65    USE arrays_3d,                                                             &
66        ONLY:  pt, zu
67
68    USE grid_variables,                                                        &
69        ONLY:  dx, dy
70
71    USE indices,                                                               &
72        ONLY:  nbgp, nx, nxl, nxr, nyn, nys, nzb, nzt
73       
74    USE kinds
75
76    IMPLICIT NONE
77
78    INTEGER(iwp) ::  i  !<
79    INTEGER(iwp) ::  ic !<
80    INTEGER(iwp) ::  j  !<
81    INTEGER(iwp) ::  jc !<
82    INTEGER(iwp) ::  k  !<
83    INTEGER(iwp) ::  kc !<
84   
85    REAL(wp)     ::  betrag !<
86    REAL(wp)     ::  radius !<
87    REAL(wp)     ::  rc     !<
88    REAL(wp)     ::  x      !<
89    REAL(wp)     ::  y      !<
90    REAL(wp)     ::  z      !<
91   
92!
93!-- Defaults: radius rc, strength z,
94!--           position of centre: ic, jc, kc
95    rc =  10.0_wp * dx
96    ic =  ( nx+1 ) / 2
97    jc =  ic
98    kc =  nzt / 2
99
100!
101!-- Compute the perturbation.
102    DO  i = nxl, nxr
103       DO  j = nys, nyn
104          DO  k = nzb+1, nzt
105             x = ( i - ic ) * dx
106             y = ( j - jc ) * dy
107             z = ABS( zu(k) - zu(kc) )
108             radius = SQRT( x**2 + y**2 + z**2 )
109             IF ( radius <= rc )  THEN
110                betrag = 5.0_wp * EXP( -( radius * 0.001_wp / 2.0_wp )**2 )
111             ELSE
112                betrag = 0.0_wp
113             ENDIF
114
115             pt(k,j,i) = pt(k,j,i) + betrag
116
117          ENDDO
118       ENDDO
119    ENDDO
120
121!
122!-- Exchange of boundary values for temperature
123    CALL exchange_horiz( pt, nbgp )
124
125
126 END SUBROUTINE init_pt_anomaly
Note: See TracBrowser for help on using the repository browser.