| 1 |
C $Header: /u/gcmpack/models/MITgcmUV/model/src/impldiff.F,v 1.12 2000/11/13 16:30:32 heimbach Exp $ |
| 2 |
|
| 3 |
#include "CPP_OPTIONS.h" |
| 4 |
|
| 5 |
C /==========================================================\ |
| 6 |
C | S/R IMPLDIFF | |
| 7 |
C | o Solve implicit diffusion equation for vertical | |
| 8 |
C | diffusivity. | |
| 9 |
C | o Recoded from 2d intermediate fields to 3d to reduce | |
| 10 |
C | TAMC storage | |
| 11 |
C | o Fixed missing masks for fields a(), c() | |
| 12 |
C \==========================================================/ |
| 13 |
SUBROUTINE IMPLDIFF( bi, bj, iMin, iMax, jMin, jMax, |
| 14 |
I deltaTX,KappaRX,recip_hFac, |
| 15 |
U gXNm1, |
| 16 |
I myThid ) |
| 17 |
IMPLICIT NONE |
| 18 |
C == Global data == |
| 19 |
#include "SIZE.h" |
| 20 |
#include "DYNVARS.h" |
| 21 |
#include "EEPARAMS.h" |
| 22 |
#include "PARAMS.h" |
| 23 |
#include "GRID.h" |
| 24 |
|
| 25 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 26 |
#include "tamc_keys.h" |
| 27 |
#endif |
| 28 |
|
| 29 |
C == Routine Arguments == |
| 30 |
INTEGER bi,bj,iMin,iMax,jMin,jMax |
| 31 |
_RL deltaTX |
| 32 |
_RL KappaRX(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
| 33 |
_RS recip_hFac(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
| 34 |
_RL gXnm1(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
| 35 |
_RL gYnm1(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
| 36 |
INTEGER myThid |
| 37 |
|
| 38 |
C == Local variables == |
| 39 |
INTEGER i,j,k |
| 40 |
_RL a(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
| 41 |
_RL b(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
| 42 |
_RL c(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
| 43 |
_RL bet(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
| 44 |
_RL gam(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
| 45 |
|
| 46 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 47 |
INTEGER kkey |
| 48 |
#endif |
| 49 |
|
| 50 |
C-- Initialise |
| 51 |
|
| 52 |
C-- Old aLower |
| 53 |
DO j=1-Oly,sNy+Oly |
| 54 |
DO i=1-Olx,sNx+Olx |
| 55 |
a(i,j,1) = 0. _d 0 |
| 56 |
ENDDO |
| 57 |
ENDDO |
| 58 |
DO k=2,Nr |
| 59 |
DO j=1-Oly,sNy+Oly |
| 60 |
DO i=1-Olx,sNx+Olx |
| 61 |
a(i,j,k) = -deltaTX*recip_hFac(i,j,k,bi,bj)*recip_drF(k) |
| 62 |
& *KappaRX(i,j, k )*recip_drC( k ) |
| 63 |
ENDDO |
| 64 |
ENDDO |
| 65 |
ENDDO |
| 66 |
|
| 67 |
C-- Old aUpper |
| 68 |
DO k=1,Nr-1 |
| 69 |
DO j=1-Oly,sNy+Oly |
| 70 |
DO i=1-Olx,sNx+Olx |
| 71 |
c(i,j,k) = -deltaTX*recip_hFac(i,j,k,bi,bj)*recip_drF(k) |
| 72 |
& *KappaRX(i,j,k+1)*recip_drC(k+1) |
| 73 |
IF (recip_hFac(i,j,k+1,bi,bj).EQ.0.) c(i,j,k)=0. |
| 74 |
ENDDO |
| 75 |
ENDDO |
| 76 |
ENDDO |
| 77 |
DO j=1-Oly,sNy+Oly |
| 78 |
DO i=1-Olx,sNx+Olx |
| 79 |
c(i,j,Nr) = 0. _d 0 |
| 80 |
ENDDO |
| 81 |
ENDDO |
| 82 |
|
| 83 |
C-- Old aCenter |
| 84 |
DO k=1,Nr |
| 85 |
DO j=1-Oly,sNy+Oly |
| 86 |
DO i=1-Olx,sNx+Olx |
| 87 |
b(i,j,k) = 1. _d 0 - c(i,j,k) - a(i,j,k) |
| 88 |
ENDDO |
| 89 |
ENDDO |
| 90 |
ENDDO |
| 91 |
|
| 92 |
C-- Old and new gam, bet are the same |
| 93 |
DO k=1,Nr |
| 94 |
DO j=1-Oly,sNy+Oly |
| 95 |
DO i=1-Olx,sNx+Olx |
| 96 |
bet(i,j,k) = 0. _d 0 |
| 97 |
gam(i,j,k) = 0. _d 0 |
| 98 |
ENDDO |
| 99 |
ENDDO |
| 100 |
ENDDO |
| 101 |
|
| 102 |
C-- Only need do anything if Nr>1 |
| 103 |
IF (Nr.GT.1) THEN |
| 104 |
|
| 105 |
k = 1 |
| 106 |
C-- Beginning of forward sweep (top level) |
| 107 |
DO j=jMin,jMax |
| 108 |
DO i=iMin,iMax |
| 109 |
IF (b(i,j,1).NE.0.) bet(i,j,1) = 1. _d 0 / b(i,j,1) |
| 110 |
ENDDO |
| 111 |
ENDDO |
| 112 |
|
| 113 |
ENDIF |
| 114 |
|
| 115 |
C-- Middle of forward sweep |
| 116 |
IF (Nr.GT.2) THEN |
| 117 |
|
| 118 |
CADJ loop = sequential |
| 119 |
DO k=2,Nr |
| 120 |
|
| 121 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 122 |
kkey = (idkey-1)*(Nr-2) + k-1 |
| 123 |
#endif |
| 124 |
|
| 125 |
DO j=jMin,jMax |
| 126 |
DO i=iMin,iMax |
| 127 |
gam(i,j,k) = c(i,j,k-1)*bet(i,j,k-1) |
| 128 |
IF ( ( b(i,j,k) - a(i,j,k)*gam(i,j,k) ) .NE. 0.) |
| 129 |
& bet(i,j,k) = 1. _d 0 / ( b(i,j,k) - a(i,j,k)*gam(i,j,k) ) |
| 130 |
ENDDO |
| 131 |
ENDDO |
| 132 |
|
| 133 |
ENDDO |
| 134 |
|
| 135 |
ENDIF |
| 136 |
|
| 137 |
|
| 138 |
DO j=jMin,jMax |
| 139 |
DO i=iMin,iMax |
| 140 |
gYNm1(i,j,1,bi,bj) = gXNm1(i,j,1,bi,bj)*bet(i,j,1) |
| 141 |
ENDDO |
| 142 |
ENDDO |
| 143 |
DO k=2,Nr |
| 144 |
DO j=jMin,jMax |
| 145 |
DO i=iMin,iMax |
| 146 |
gYnm1(i,j,k,bi,bj) = bet(i,j,k)* |
| 147 |
& (gXnm1(i,j,k,bi,bj) - a(i,j,k)*gYnm1(i,j,k-1,bi,bj)) |
| 148 |
ENDDO |
| 149 |
ENDDO |
| 150 |
ENDDO |
| 151 |
|
| 152 |
|
| 153 |
C-- Backward sweep |
| 154 |
CADJ loop = sequential |
| 155 |
DO k=Nr-1,1,-1 |
| 156 |
DO j=jMin,jMax |
| 157 |
DO i=iMin,iMax |
| 158 |
gYnm1(i,j,k,bi,bj)=gYnm1(i,j,k,bi,bj) |
| 159 |
& -gam(i,j,k+1)*gYnm1(i,j,k+1,bi,bj) |
| 160 |
ENDDO |
| 161 |
ENDDO |
| 162 |
ENDDO |
| 163 |
|
| 164 |
DO k=1,Nr |
| 165 |
DO j=jMin,jMax |
| 166 |
DO i=iMin,iMax |
| 167 |
gXnm1(i,j,k,bi,bj)=gYnm1(i,j,k,bi,bj) |
| 168 |
ENDDO |
| 169 |
ENDDO |
| 170 |
ENDDO |
| 171 |
|
| 172 |
RETURN |
| 173 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph