1 |
cnh |
1.2 |
C $Header: ini_cg2d.F,v 1.1.1.1 1998/04/22 19:15:30 cnh Exp $ |
2 |
cnh |
1.1 |
|
3 |
|
|
#include "CPP_EEOPTIONS.h" |
4 |
|
|
|
5 |
|
|
CStartOfInterface |
6 |
|
|
SUBROUTINE INI_CG2D( myThid ) |
7 |
|
|
C /==========================================================\ |
8 |
|
|
C | SUBROUTINE INI_CG2D | |
9 |
|
|
C | o Initialise 2d conjugate gradient solver operators. | |
10 |
|
|
C |==========================================================| |
11 |
|
|
C | These arrays are purely a function of the basin geom. | |
12 |
|
|
C | We set then here once and them use then repeatedly. | |
13 |
|
|
C \==========================================================/ |
14 |
|
|
|
15 |
|
|
C === Global variables === |
16 |
|
|
#include "SIZE.h" |
17 |
|
|
#include "EEPARAMS.h" |
18 |
|
|
#include "PARAMS.h" |
19 |
|
|
#include "GRID.h" |
20 |
|
|
#include "CG2D.h" |
21 |
|
|
|
22 |
|
|
C === Routine arguments === |
23 |
|
|
C myThid - Thread no. that called this routine. |
24 |
|
|
INTEGER myThid |
25 |
|
|
CEndOfInterface |
26 |
|
|
|
27 |
|
|
C === Local variables === |
28 |
|
|
C xG, yG - Global coordinate location. |
29 |
|
|
C zG |
30 |
|
|
C iG, jG - Global coordinate index |
31 |
|
|
C bi,bj - Loop counters |
32 |
|
|
C faceArea - Temporary used to hold cell face areas. |
33 |
|
|
C I,J,K |
34 |
|
|
C myNorm - Work variable used in clculating normalisation factor |
35 |
|
|
CHARACTER*(MAX_LEN_MBUF) msgBuf |
36 |
|
|
INTEGER bi, bj |
37 |
|
|
INTEGER I, J, K |
38 |
|
|
real faceArea |
39 |
|
|
_RL myNorm |
40 |
|
|
|
41 |
|
|
C-- Initialise laplace operator |
42 |
|
|
C aW2d: integral in Z Ax/dX |
43 |
|
|
C aS2d: integral in Z Ay/dY |
44 |
|
|
myNorm = 0. _d 0 |
45 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
46 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
47 |
|
|
DO J=1,sNy |
48 |
|
|
DO I=1,sNx |
49 |
|
|
aW2d(I,J,bi,bj) = 0. _d 0 |
50 |
|
|
aS2d(I,J,bi,bj) = 0. _d 0 |
51 |
|
|
ENDDO |
52 |
|
|
ENDDO |
53 |
|
|
DO K=1,Nz |
54 |
|
|
DO J=1,sNy |
55 |
|
|
DO I=1,sNx |
56 |
|
|
faceArea = dyG(I,J,bi,bj)*dzF(K)*HFacW(I,J,K,bi,bj) |
57 |
|
|
aW2d(I,J,bi,bj) = aW2d(I,J,bi,bj) + |
58 |
|
|
& gravity*faceArea*rDxC(I,J,bi,bj) |
59 |
|
|
faceArea = dxG(I,J,bi,bj)*dzF(K)*HFacS(I,J,K,bi,bj) |
60 |
|
|
aS2d(I,J,bi,bj) = aS2d(I,J,bi,bj) + |
61 |
|
|
& gravity*faceArea*rDyC(I,J,bi,bj) |
62 |
|
|
ENDDO |
63 |
|
|
ENDDO |
64 |
|
|
ENDDO |
65 |
|
|
DO J=1,sNy |
66 |
|
|
DO I=1,sNx |
67 |
|
|
myNorm = MAX(ABS(aW2d(I,J,bi,bj)),myNorm) |
68 |
|
|
myNorm = MAX(ABS(aS2d(I,J,bi,bj)),myNorm) |
69 |
|
|
ENDDO |
70 |
|
|
ENDDO |
71 |
|
|
ENDDO |
72 |
|
|
ENDDO |
73 |
|
|
cg2dNbuf(1,myThid) = myNorm |
74 |
|
|
_GLOBAL_MAX_R8( cg2dNbuf, myNorm, myThid ) |
75 |
|
|
IF ( cg2dNbuf(1,1) .NE. 0. _d 0 ) THEN |
76 |
|
|
myNorm = 1. _d 0/cg2dNbuf(1,1) |
77 |
|
|
ELSE |
78 |
|
|
myNorm = 1. _d 0 |
79 |
|
|
ENDIF |
80 |
|
|
_BEGIN_MASTER( myThid ) |
81 |
|
|
cg2dNorm = myNorm |
82 |
|
|
CcnhDebugStarts |
83 |
|
|
WRITE(msgBuf,*) ' CG2D normalisation factor = ', cg2dNorm |
84 |
|
|
CALL PRINT_MESSAGE( msgBuf,standardMessageUnit,SQUEEZE_RIGHT,1) |
85 |
|
|
CcnhDebugEnds |
86 |
|
|
_END_MASTER( myThid ) |
87 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
88 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
89 |
|
|
DO J=1,sNy |
90 |
|
|
DO I=1,sNx |
91 |
|
|
aW2d(I,J,bi,bj) = aW2d(I,J,bi,bj)*myNorm |
92 |
|
|
aS2d(I,J,bi,bj) = aS2d(I,J,bi,bj)*myNorm |
93 |
|
|
ENDDO |
94 |
|
|
ENDDO |
95 |
|
|
ENDDO |
96 |
|
|
ENDDO |
97 |
|
|
|
98 |
|
|
C-- Update overlap regions |
99 |
|
|
CcnhDebugStarts |
100 |
|
|
C CALL PLOT_FIELD_XYR8( aW2d, 'AW2D INI_CG2D.1' , 1, myThid ) |
101 |
|
|
C CALL PLOT_FIELD_XYR8( aS2d, 'AS2D INI_CG2D.1' , 1, myThid ) |
102 |
|
|
CcnhDebugEnds |
103 |
|
|
_EXCH_XY_R4(aW2d, myThid) |
104 |
|
|
_EXCH_XY_R4(aS2d, myThid) |
105 |
|
|
CcnhDebugStarts |
106 |
|
|
C CALL PLOT_FIELD_XYR8( aW2d, 'AW2D INI_CG2D.2' , 1, myThid ) |
107 |
|
|
C CALL PLOT_FIELD_XYR8( aS2d, 'AS2D INI_CG2D.2' , 1, myThid ) |
108 |
|
|
CcnhDebugEnds |
109 |
|
|
|
110 |
|
|
C-- Initialise preconditioner |
111 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
112 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
113 |
|
|
DO J=1,sNy |
114 |
|
|
DO I=1,sNx |
115 |
|
|
pC(I,J,bi,bj) = 1. _d 0 |
116 |
|
|
IF ( |
117 |
|
|
& aW2d(I,J,bi,bj) + aW2d(I+1,J,bi,bj) |
118 |
|
|
& +aS2d(I,J,bi,bj) + aS2D(I,J+1,bi,bj) |
119 |
|
|
& .EQ. 0. |
120 |
|
|
& ) pC(I,J,bi,bj) = 0. _d 0 |
121 |
|
|
pW(I,J,bi,bj) = 0. |
122 |
|
|
pS(I,J,bi,bj) = 0. |
123 |
|
|
ENDDO |
124 |
|
|
ENDDO |
125 |
|
|
ENDDO |
126 |
|
|
ENDDO |
127 |
|
|
C-- Update overlap regions |
128 |
|
|
_EXCH_XY_R4(pC, myThid) |
129 |
|
|
_EXCH_XY_R4(pW, myThid) |
130 |
|
|
_EXCH_XY_R4(pS, myThid) |
131 |
|
|
|
132 |
|
|
C-- Set default values for initial guess |
133 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
134 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
135 |
|
|
DO J=1,sNy |
136 |
|
|
DO I=1,sNx |
137 |
|
|
cg2d_x(I,J,bi,bj) = 0. _d 0 |
138 |
|
|
ENDDO |
139 |
|
|
ENDDO |
140 |
|
|
ENDDO |
141 |
|
|
ENDDO |
142 |
|
|
C-- Update overlap regions |
143 |
|
|
_EXCH_XY_R8(cg2d_x, myThid) |
144 |
|
|
|
145 |
|
|
RETURN |
146 |
|
|
END |