File: /nfs/home/0/users/jenkins/mfix.git/model/location.f

1     !vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvC
2     !                                                                      C
3     !  Module name: LOCATION(L2, XMIN, DX)                                 C
4     !  Purpose: Find the cell center location in X, Y, or Z direction for  C
5     !           the given index L2.                                        C
6     !                                                                      C
7     !  Author: M. Syamlal                                 Date: 01-SEP-92  C
8     !  Reviewer: M. Syamlal                               Date: 11-DEC-92  C
9     !                                                                      C
10     !  Literature/Document References:                                     C
11     !                                                                      C
12     !  Variables referenced: None                                          C
13     !  Variables modified: None                                            C
14     !                                                                      C
15     !  Local variables: L                                                  C
16     !                                                                      C
17     !^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^C
18     !
19           DOUBLE PRECISION FUNCTION LOCATION (L2, XMIN, DX)
20     !...Translated by Pacific-Sierra Research VAST-90 2.06G5  12:17:31  12/09/98
21     !...Switches: -xf
22     !
23     !-----------------------------------------------
24     !   M o d u l e s
25     !-----------------------------------------------
26           USE param
27           USE param1
28           IMPLICIT NONE
29     !-----------------------------------------------
30     !   D u m m y   A r g u m e n t s
31     !-----------------------------------------------
32     !
33     !                      Index for which the location is required
34           INTEGER          L2
35     !
36     !                      Starting location of the coordinate
37           DOUBLE PRECISION XMIN
38     !
39     !                      Cell sizes (DX, DY, or DZ)
40     !//EFD Nov/11 avoid using dx(*)
41     !//      DOUBLE PRECISION DX(*)
42           DOUBLE PRECISION DX(0:L2)
43     !
44     !  Local variables
45     !
46     !                      Index
47           INTEGER          L
48     !-----------------------------------------------
49     !
50           LOCATION = XMIN - HALF*DX(1)
51           L = 2
52           IF (L2 - 1 > 0) THEN
53     
54     !//EFD      since indexing of dx starts from 0
55     !//         using DX(1:(L2-1)) instead of DX(:,L2)
56     !//         LOCATION = LOCATION + SUM(HALF*(DX(:L2-1)+DX(2:L2)))
57     
58              LOCATION = LOCATION + SUM(HALF*(DX(1:(L2-1))+DX(2:L2)))
59              L = L2 + 1
60     
61           ENDIF
62           RETURN
63           END FUNCTION LOCATION
64