source: palm/trunk/SOURCE/init_pt_anomaly.f90 @ 2716

Last change on this file since 2716 was 2716, checked in by kanani, 4 years ago

Correction of "Former revisions" section

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File size: 3.7 KB
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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 2716 2017-12-29 16:35:59Z kanani $
27! Corrected "Former revisions" section
28!
29! 2696 2017-12-14 17:12:51Z kanani
30! Change in file header (GPL part)
31!
32! 2101 2017-01-05 16:42:31Z suehring
33!
34! 2000 2016-08-20 18:09:15Z knoop
35! Forced header and separation lines into 80 columns
36!
37! 1682 2015-10-07 23:56:08Z knoop
38! Code annotations made doxygen readable
39!
40! 1353 2014-04-08 15:21:23Z heinze
41! REAL constants provided with KIND-attribute
42!
43! 1322 2014-03-20 16:38:49Z raasch
44! REAL constants defined as wp_kind
45!
46! 1320 2014-03-20 08:40:49Z raasch
47! ONLY-attribute added to USE-statements,
48! kind-parameters added to all INTEGER and REAL declaration statements,
49! kinds are defined in new module kinds,
50! revision history before 2012 removed,
51! comment fields (!:) to be used for variable explanations added to
52! all variable declaration statements
53!
54! 1036 2012-10-22 13:43:42Z raasch
55! code put under GPL (PALM 3.9)
56!
57! 861 2012-03-26 14:18:34Z suehring
58! Modification of the amplitude to obtain a visible temperature perturbation.
59!
60! Revision 1.1  1997/08/29 08:58:56  raasch
61! Initial revision
62!
63!
64! Description:
65! ------------
66!> Impose a temperature perturbation for an advection test.
67!------------------------------------------------------------------------------!
68 SUBROUTINE init_pt_anomaly
69 
70
71    USE arrays_3d,                                                             &
72        ONLY:  pt, zu
73
74    USE grid_variables,                                                        &
75        ONLY:  dx, dy
76
77    USE indices,                                                               &
78        ONLY:  nbgp, nx, nxl, nxr, nyn, nys, nzb, nzt
79       
80    USE kinds
81
82    IMPLICIT NONE
83
84    INTEGER(iwp) ::  i  !<
85    INTEGER(iwp) ::  ic !<
86    INTEGER(iwp) ::  j  !<
87    INTEGER(iwp) ::  jc !<
88    INTEGER(iwp) ::  k  !<
89    INTEGER(iwp) ::  kc !<
90   
91    REAL(wp)     ::  betrag !<
92    REAL(wp)     ::  radius !<
93    REAL(wp)     ::  rc     !<
94    REAL(wp)     ::  x      !<
95    REAL(wp)     ::  y      !<
96    REAL(wp)     ::  z      !<
97   
98!
99!-- Defaults: radius rc, strength z,
100!--           position of centre: ic, jc, kc
101    rc =  10.0_wp * dx
102    ic =  ( nx+1 ) / 2
103    jc =  ic
104    kc =  nzt / 2
105
106!
107!-- Compute the perturbation.
108    DO  i = nxl, nxr
109       DO  j = nys, nyn
110          DO  k = nzb+1, nzt
111             x = ( i - ic ) * dx
112             y = ( j - jc ) * dy
113             z = ABS( zu(k) - zu(kc) )
114             radius = SQRT( x**2 + y**2 + z**2 )
115             IF ( radius <= rc )  THEN
116                betrag = 5.0_wp * EXP( -( radius * 0.001_wp / 2.0_wp )**2 )
117             ELSE
118                betrag = 0.0_wp
119             ENDIF
120
121             pt(k,j,i) = pt(k,j,i) + betrag
122
123          ENDDO
124       ENDDO
125    ENDDO
126
127!
128!-- Exchange of boundary values for temperature
129    CALL exchange_horiz( pt, nbgp )
130
131
132 END SUBROUTINE init_pt_anomaly
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