| 1 |
C $Header: /u/gcmpack/models/MITgcmUV/model/src/solve_for_pressure.F,v 1.13.2.1 2001/01/30 21:03:00 adcroft Exp $ |
| 2 |
|
| 3 |
#include "CPP_OPTIONS.h" |
| 4 |
|
| 5 |
CStartOfInterface |
| 6 |
SUBROUTINE SOLVE_FOR_PRESSURE( myThid ) |
| 7 |
C /==========================================================\ |
| 8 |
C | SUBROUTINE SOLVE_FOR_PRESSURE | |
| 9 |
C | o Controls inversion of two and/or three-dimensional | |
| 10 |
C | elliptic problems for the pressure field. | |
| 11 |
C \==========================================================/ |
| 12 |
IMPLICIT NONE |
| 13 |
|
| 14 |
C == Global variables |
| 15 |
#include "SIZE.h" |
| 16 |
#include "EEPARAMS.h" |
| 17 |
#include "PARAMS.h" |
| 18 |
#include "DYNVARS.h" |
| 19 |
#include "GRID.h" |
| 20 |
#include "CG2D.h" |
| 21 |
#ifdef ALLOW_NONHYDROSTATIC |
| 22 |
#include "CG3D.h" |
| 23 |
#include "GW.h" |
| 24 |
#endif |
| 25 |
#ifdef ALLOW_OBCS |
| 26 |
#include "OBCS.h" |
| 27 |
#endif |
| 28 |
|
| 29 |
C == Routine arguments == |
| 30 |
C myThid - Number of this instance of SOLVE_FOR_PRESSURE |
| 31 |
INTEGER myThid |
| 32 |
CEndOfInterface |
| 33 |
|
| 34 |
C Local variables |
| 35 |
INTEGER i,j,k,bi,bj |
| 36 |
_RS uf(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
| 37 |
_RS vf(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
| 38 |
|
| 39 |
#ifndef DIVG_IN_DYNAMICS |
| 40 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 41 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 42 |
DO K=Nr,1,-1 |
| 43 |
DO j=1,sNy+1 |
| 44 |
DO i=1,sNx+1 |
| 45 |
uf(i,j) = _dyG(i,j,bi,bj) |
| 46 |
& *drF(k)*_hFacW(i,j,k,bi,bj) |
| 47 |
vf(i,j) = _dxG(i,j,bi,bj) |
| 48 |
& *drF(k)*_hFacS(i,j,k,bi,bj) |
| 49 |
ENDDO |
| 50 |
ENDDO |
| 51 |
CALL CALC_DIV_GHAT( |
| 52 |
I bi,bj,1,sNx,1,sNy,K, |
| 53 |
I uf,vf, |
| 54 |
I myThid) |
| 55 |
ENDDO |
| 56 |
ENDDO |
| 57 |
ENDDO |
| 58 |
#endif |
| 59 |
|
| 60 |
#ifdef INCLUDE_CD_CODE |
| 61 |
C-- Save previous solution. |
| 62 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 63 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 64 |
DO j=1-OLy,sNy+OLy |
| 65 |
DO i=1-OLx,sNx+OLx |
| 66 |
cg2d_xNM1(i,j,bi,bj) = cg2d_x(i,j,bi,bj) |
| 67 |
ENDDO |
| 68 |
ENDDO |
| 69 |
ENDDO |
| 70 |
ENDDO |
| 71 |
#endif |
| 72 |
|
| 73 |
C-- Add source term arising from w=d/dt (p_s + p_nh) |
| 74 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 75 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 76 |
#ifdef ALLOW_NONHYDROSTATIC |
| 77 |
DO j=1,sNy |
| 78 |
DO i=1,sNx |
| 79 |
cg2d_b(i,j,bi,bj) = cg2d_b(i,j,bi,bj) |
| 80 |
& +freeSurfFac*_rA(I,J,bi,bj)*horiVertRatio*( |
| 81 |
& -cg2d_x(I,J,bi,bj) |
| 82 |
& -cg3d_x(I,J,1,bi,bj) |
| 83 |
& )/deltaTMom/deltaTMom |
| 84 |
cg3d_b(i,j,1,bi,bj) = cg3d_b(i,j,1,bi,bj) |
| 85 |
& +freeSurfFac*_rA(I,J,bi,bj)*horiVertRatio*( |
| 86 |
& -cg2d_x(I,J,bi,bj) |
| 87 |
& -cg3d_x(I,J,1,bi,bj) |
| 88 |
& )/deltaTMom/deltaTMom |
| 89 |
ENDDO |
| 90 |
ENDDO |
| 91 |
#else |
| 92 |
DO j=1,sNy |
| 93 |
DO i=1,sNx |
| 94 |
cg2d_b(i,j,bi,bj) = cg2d_b(i,j,bi,bj) |
| 95 |
& +freeSurfFac*_rA(I,J,bi,bj)*horiVertRatio*( |
| 96 |
& -cg2d_x(I,J,bi,bj) |
| 97 |
& )/deltaTMom/deltaTMom |
| 98 |
ENDDO |
| 99 |
ENDDO |
| 100 |
#endif |
| 101 |
|
| 102 |
#ifdef ALLOW_OBCS |
| 103 |
IF (useOBCS) THEN |
| 104 |
DO i=1,sNx |
| 105 |
C Northern boundary |
| 106 |
IF (OB_Jn(I,bi,bj).NE.0) THEN |
| 107 |
cg2d_b(I,OB_Jn(I,bi,bj),bi,bj)=0. |
| 108 |
ENDIF |
| 109 |
C Southern boundary |
| 110 |
IF (OB_Js(I,bi,bj).NE.0) THEN |
| 111 |
cg2d_b(I,OB_Js(I,bi,bj),bi,bj)=0. |
| 112 |
ENDIF |
| 113 |
ENDDO |
| 114 |
DO j=1,sNy |
| 115 |
C Eastern boundary |
| 116 |
IF (OB_Ie(J,bi,bj).NE.0) THEN |
| 117 |
cg2d_b(OB_Ie(J,bi,bj),J,bi,bj)=0. |
| 118 |
ENDIF |
| 119 |
C Western boundary |
| 120 |
IF (OB_Iw(J,bi,bj).NE.0) THEN |
| 121 |
cg2d_b(OB_Iw(J,bi,bj),J,bi,bj)=0. |
| 122 |
ENDIF |
| 123 |
ENDDO |
| 124 |
ENDIF |
| 125 |
#endif |
| 126 |
ENDDO |
| 127 |
ENDDO |
| 128 |
|
| 129 |
|
| 130 |
C-- Find the surface pressure using a two-dimensional conjugate |
| 131 |
C-- gradient solver. |
| 132 |
C see CG2D.h for the interface to this routine. |
| 133 |
CALL CG2D( |
| 134 |
I cg2d_b, |
| 135 |
U cg2d_x, |
| 136 |
I myThid ) |
| 137 |
|
| 138 |
_EXCH_XY_R8(cg2d_x, myThid ) |
| 139 |
|
| 140 |
#ifdef ALLOW_NONHYDROSTATIC |
| 141 |
IF ( nonHydrostatic ) THEN |
| 142 |
|
| 143 |
C-- Solve for a three-dimensional pressure term (NH or IGW or both ). |
| 144 |
C see CG3D.h for the interface to this routine. |
| 145 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 146 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 147 |
DO j=1,sNy+1 |
| 148 |
DO i=1,sNx+1 |
| 149 |
uf(i,j)=-gBaro*_recip_dxC(i,j,bi,bj)* |
| 150 |
& (cg2d_x(i,j,bi,bj)-cg2d_x(i-1,j,bi,bj)) |
| 151 |
vf(i,j)=-gBaro*_recip_dyC(i,j,bi,bj)* |
| 152 |
& (cg2d_x(i,j,bi,bj)-cg2d_x(i,j-1,bi,bj)) |
| 153 |
ENDDO |
| 154 |
ENDDO |
| 155 |
|
| 156 |
#ifdef ALLOW_OBCS |
| 157 |
IF (useOBCS) THEN |
| 158 |
DO i=1,sNx+1 |
| 159 |
C Northern boundary |
| 160 |
IF (OB_Jn(I,bi,bj).NE.0) THEN |
| 161 |
vf(I,OB_Jn(I,bi,bj))=0. |
| 162 |
ENDIF |
| 163 |
C Southern boundary |
| 164 |
IF (OB_Js(I,bi,bj).NE.0) THEN |
| 165 |
vf(I,OB_Js(I,bi,bj)+1)=0. |
| 166 |
ENDIF |
| 167 |
ENDDO |
| 168 |
DO j=1,sNy+1 |
| 169 |
C Eastern boundary |
| 170 |
IF (OB_Ie(J,bi,bj).NE.0) THEN |
| 171 |
uf(OB_Ie(J,bi,bj),J)=0. |
| 172 |
ENDIF |
| 173 |
C Western boundary |
| 174 |
IF (OB_Iw(J,bi,bj).NE.0) THEN |
| 175 |
uf(OB_Iw(J,bi,bj)+1,J)=0. |
| 176 |
ENDIF |
| 177 |
ENDDO |
| 178 |
ENDIF |
| 179 |
#endif |
| 180 |
|
| 181 |
K=1 |
| 182 |
DO j=1,sNy |
| 183 |
DO i=1,sNx |
| 184 |
cg3d_b(i,j,k,bi,bj) = cg3d_b(i,j,k,bi,bj) |
| 185 |
& +dRF(K)*dYG(i+1,j,bi,bj)*hFacW(i+1,j,k,bi,bj)*uf(i+1,j) |
| 186 |
& -dRF(K)*dYG( i ,j,bi,bj)*hFacW( i ,j,k,bi,bj)*uf( i ,j) |
| 187 |
& +dRF(K)*dXG(i,j+1,bi,bj)*hFacS(i,j+1,k,bi,bj)*vf(i,j+1) |
| 188 |
& -dRF(K)*dXG(i, j ,bi,bj)*hFacS(i, j ,k,bi,bj)*vf(i, j ) |
| 189 |
& +( |
| 190 |
& -wVel(i,j,k+1,bi,bj) |
| 191 |
& )*_rA(i,j,bi,bj)/deltaTmom |
| 192 |
& +freeSurfFac*_rA(I,J,bi,bj)*horiVertRatio*( |
| 193 |
& +cg2d_x(I,J,bi,bj) |
| 194 |
& )/deltaTMom/deltaTMom |
| 195 |
ENDDO |
| 196 |
ENDDO |
| 197 |
DO K=2,Nr-1 |
| 198 |
DO j=1,sNy |
| 199 |
DO i=1,sNx |
| 200 |
cg3d_b(i,j,k,bi,bj) = cg3d_b(i,j,k,bi,bj) |
| 201 |
& +dRF(K)*dYG(i+1,j,bi,bj)*hFacW(i+1,j,k,bi,bj)*uf(i+1,j) |
| 202 |
& -dRF(K)*dYG( i ,j,bi,bj)*hFacW( i ,j,k,bi,bj)*uf( i ,j) |
| 203 |
& +dRF(K)*dXG(i,j+1,bi,bj)*hFacS(i,j+1,k,bi,bj)*vf(i,j+1) |
| 204 |
& -dRF(K)*dXG(i, j ,bi,bj)*hFacS(i, j ,k,bi,bj)*vf(i, j ) |
| 205 |
& +( wVel(i,j,k ,bi,bj) |
| 206 |
& -wVel(i,j,k+1,bi,bj) |
| 207 |
& )*_rA(i,j,bi,bj)/deltaTmom |
| 208 |
|
| 209 |
ENDDO |
| 210 |
ENDDO |
| 211 |
ENDDO |
| 212 |
K=Nr |
| 213 |
DO j=1,sNy |
| 214 |
DO i=1,sNx |
| 215 |
cg3d_b(i,j,k,bi,bj) = cg3d_b(i,j,k,bi,bj) |
| 216 |
& +dRF(K)*dYG(i+1,j,bi,bj)*hFacW(i+1,j,k,bi,bj)*uf(i+1,j) |
| 217 |
& -dRF(K)*dYG( i ,j,bi,bj)*hFacW( i ,j,k,bi,bj)*uf( i ,j) |
| 218 |
& +dRF(K)*dXG(i,j+1,bi,bj)*hFacS(i,j+1,k,bi,bj)*vf(i,j+1) |
| 219 |
& -dRF(K)*dXG(i, j ,bi,bj)*hFacS(i, j ,k,bi,bj)*vf(i, j ) |
| 220 |
& +( wVel(i,j,k ,bi,bj) |
| 221 |
& )*_rA(i,j,bi,bj)/deltaTmom |
| 222 |
|
| 223 |
ENDDO |
| 224 |
ENDDO |
| 225 |
|
| 226 |
#ifdef ALLOW_OBCS |
| 227 |
IF (useOBCS) THEN |
| 228 |
DO K=1,Nr |
| 229 |
DO i=1,sNx |
| 230 |
C Northern boundary |
| 231 |
IF (OB_Jn(I,bi,bj).NE.0) THEN |
| 232 |
cg3d_b(I,OB_Jn(I,bi,bj),K,bi,bj)=0. |
| 233 |
ENDIF |
| 234 |
C Southern boundary |
| 235 |
IF (OB_Js(I,bi,bj).NE.0) THEN |
| 236 |
cg3d_b(I,OB_Js(I,bi,bj),K,bi,bj)=0. |
| 237 |
ENDIF |
| 238 |
ENDDO |
| 239 |
DO j=1,sNy |
| 240 |
C Eastern boundary |
| 241 |
IF (OB_Ie(J,bi,bj).NE.0) THEN |
| 242 |
cg3d_b(OB_Ie(J,bi,bj),J,K,bi,bj)=0. |
| 243 |
ENDIF |
| 244 |
C Western boundary |
| 245 |
IF (OB_Iw(J,bi,bj).NE.0) THEN |
| 246 |
cg3d_b(OB_Iw(J,bi,bj),J,K,bi,bj)=0. |
| 247 |
ENDIF |
| 248 |
ENDDO |
| 249 |
ENDDO |
| 250 |
ENDIF |
| 251 |
#endif |
| 252 |
|
| 253 |
ENDDO ! bi |
| 254 |
ENDDO ! bj |
| 255 |
|
| 256 |
CALL CG3D( myThid ) |
| 257 |
_EXCH_XYZ_R8(cg3d_x, myThid ) |
| 258 |
|
| 259 |
ENDIF |
| 260 |
#endif |
| 261 |
|
| 262 |
RETURN |
| 263 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph