| 1 |
C $Header: /u/gcmpack/MITgcm/model/src/integr_continuity.F,v 1.20 2007/10/15 15:28:24 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "PACKAGES_CONFIG.h" |
| 5 |
#include "CPP_OPTIONS.h" |
| 6 |
|
| 7 |
CBOP |
| 8 |
C !ROUTINE: INTEGR_CONTINUITY |
| 9 |
C !INTERFACE: |
| 10 |
SUBROUTINE INTEGR_CONTINUITY( |
| 11 |
I bi, bj, uFld, vFld, |
| 12 |
I myTime, myIter, myThid ) |
| 13 |
C !DESCRIPTION: \bv |
| 14 |
C *==========================================================* |
| 15 |
C | SUBROUTINE INTEGR_CONTINUITY |
| 16 |
C | o Integrate the continuity Eq : compute vertical velocity |
| 17 |
C | and free surface "r-anomaly" (etaN) to satisfy |
| 18 |
C | exactly the convervation of the Total Volume |
| 19 |
C *==========================================================* |
| 20 |
C \ev |
| 21 |
|
| 22 |
C !USES: |
| 23 |
IMPLICIT NONE |
| 24 |
C == Global variables |
| 25 |
#include "SIZE.h" |
| 26 |
#include "EEPARAMS.h" |
| 27 |
#include "PARAMS.h" |
| 28 |
#include "DYNVARS.h" |
| 29 |
#include "GRID.h" |
| 30 |
#include "SURFACE.h" |
| 31 |
#include "FFIELDS.h" |
| 32 |
|
| 33 |
C !INPUT/OUTPUT PARAMETERS: |
| 34 |
C == Routine arguments == |
| 35 |
C uFld :: Zonal velocity ( m/s ) |
| 36 |
C vFld :: Meridional velocity ( m/s ) |
| 37 |
C bi,bj :: tile index |
| 38 |
C myTime :: Current time in simulation |
| 39 |
C myIter :: Current iteration number in simulation |
| 40 |
C myThid :: Thread number for this instance of the routine. |
| 41 |
_RL myTime |
| 42 |
INTEGER myIter |
| 43 |
INTEGER myThid |
| 44 |
INTEGER bi,bj |
| 45 |
_RL uFld(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
| 46 |
_RL vFld(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
| 47 |
|
| 48 |
C !LOCAL VARIABLES: |
| 49 |
C Local variables in common block |
| 50 |
|
| 51 |
C Local variables |
| 52 |
C i,j,k :: Loop counters |
| 53 |
C uTrans :: Volume transports ( uVel.xA ) |
| 54 |
C vTrans :: Volume transports ( vVel.yA ) |
| 55 |
C hDivFlow :: Div. Barotropic Flow [transport unit m3/s] |
| 56 |
INTEGER k |
| 57 |
#ifdef EXACT_CONSERV |
| 58 |
INTEGER i,j, ks |
| 59 |
_RL uTrans(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
| 60 |
_RL vTrans(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
| 61 |
_RL hDivFlow(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
| 62 |
_RL facEmP, facMass |
| 63 |
#endif /* EXACT_CONSERV */ |
| 64 |
#ifndef ALLOW_ADDFLUID |
| 65 |
_RL addMass(1) |
| 66 |
#endif /* ndef ALLOW_ADDFLUID */ |
| 67 |
CEOP |
| 68 |
|
| 69 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 70 |
|
| 71 |
#ifdef EXACT_CONSERV |
| 72 |
IF (exactConserv) THEN |
| 73 |
|
| 74 |
facEmP = 0. |
| 75 |
IF ( fluidIsWater.AND.useRealFreshWaterFlux ) facEmP=mass2rUnit |
| 76 |
facMass = 0. |
| 77 |
IF ( selectAddFluid.GE.1 ) facMass = mass2rUnit |
| 78 |
|
| 79 |
C-- Compute the Divergence of The Barotropic Flow : |
| 80 |
|
| 81 |
C- Initialise |
| 82 |
DO j=1-Oly,sNy+Oly |
| 83 |
DO i=1-Olx,sNx+Olx |
| 84 |
hDivFlow(i,j) = 0. _d 0 |
| 85 |
utrans(i,j) = 0. _d 0 |
| 86 |
vtrans(i,j) = 0. _d 0 |
| 87 |
ENDDO |
| 88 |
ENDDO |
| 89 |
|
| 90 |
DO k=1,Nr |
| 91 |
|
| 92 |
C- Calculate velocity field "volume transports" through tracer cell faces |
| 93 |
C anelastic: uTrans,vTrans are scaled by rhoFacC (~ mass transport). |
| 94 |
DO j=1,sNy+1 |
| 95 |
DO i=1,sNx+1 |
| 96 |
uTrans(i,j) = uFld(i,j,k,bi,bj)*_dyG(i,j,bi,bj) |
| 97 |
& *deepFacC(k)*rhoFacC(k) |
| 98 |
& *drF(k)*_hFacW(i,j,k,bi,bj) |
| 99 |
vTrans(i,j) = vFld(i,j,k,bi,bj)*_dxG(i,j,bi,bj) |
| 100 |
& *deepFacC(k)*rhoFacC(k) |
| 101 |
& *drF(k)*_hFacS(i,j,k,bi,bj) |
| 102 |
ENDDO |
| 103 |
ENDDO |
| 104 |
|
| 105 |
C- Integrate vertically the Horizontal Divergence |
| 106 |
DO j=1,sNy |
| 107 |
DO i=1,sNx |
| 108 |
hDivFlow(i,j) = hDivFlow(i,j) |
| 109 |
& +maskC(i,j,k,bi,bj)*( uTrans(i+1,j)-uTrans(i,j) |
| 110 |
& +vTrans(i,j+1)-vTrans(i,j) ) |
| 111 |
#ifdef ALLOW_ADDFLUID |
| 112 |
& -facMass*addMass(i,j,k,bi,bj) |
| 113 |
#endif /* ALLOW_ADDFLUID */ |
| 114 |
ENDDO |
| 115 |
ENDDO |
| 116 |
|
| 117 |
C- End DO k=1,Nr |
| 118 |
ENDDO |
| 119 |
|
| 120 |
C------------------------------------ |
| 121 |
C note: deep-model not implemented for P-coordinate + realFreshWaterFlux ; |
| 122 |
C anelastic: always assumes that rhoFacF(1) = 1 |
| 123 |
IF ( myTime.EQ.startTime .AND. myTime.NE.baseTime |
| 124 |
& .AND. fluidIsWater .AND. useRealFreshWaterFlux ) THEN |
| 125 |
|
| 126 |
C needs previous time-step value of E-P-R, that has not been loaded |
| 127 |
C and was not in old pickup-file ; try to use etaN & etaH instead. |
| 128 |
IF ( usePickupBeforeC54 ) THEN |
| 129 |
DO j=1,sNy |
| 130 |
DO i=1,sNx |
| 131 |
dEtaHdt(i,j,bi,bj) = (etaN(i,j,bi,bj)-etaH(i,j,bi,bj)) |
| 132 |
& / (implicDiv2Dflow*deltaTfreesurf) |
| 133 |
ENDDO |
| 134 |
ENDDO |
| 135 |
ENDIF |
| 136 |
|
| 137 |
DO j=1,sNy |
| 138 |
DO i=1,sNx |
| 139 |
PmEpR(i,j,bi,bj) = dEtaHdt(i,j,bi,bj) |
| 140 |
& + hDivFlow(i,j)*recip_rA(i,j,bi,bj) |
| 141 |
& *recip_deepFac2F(1) |
| 142 |
PmEpR(i,j,bi,bj) = PmEpR(i,j,bi,bj)*rUnit2mass |
| 143 |
ENDDO |
| 144 |
ENDDO |
| 145 |
ELSEIF ( myTime.EQ.startTime ) THEN |
| 146 |
DO j=1,sNy |
| 147 |
DO i=1,sNx |
| 148 |
ks = ksurfC(I,J,bi,bj) |
| 149 |
PmEpR(i,j,bi,bj) = 0. _d 0 |
| 150 |
dEtaHdt(i,j,bi,bj) = -hDivFlow(i,j)*recip_rA(i,j,bi,bj) |
| 151 |
& *recip_deepFac2F(ks) |
| 152 |
ENDDO |
| 153 |
ENDDO |
| 154 |
ELSE |
| 155 |
C-- Needs to get valid PmEpR (for T,S forcing) also in overlap regions |
| 156 |
C (e.g., if using KPP) => set over full index range |
| 157 |
DO j=1-OLy,sNy+OLy |
| 158 |
DO i=1-OLx,sNx+OLx |
| 159 |
PmEpR(i,j,bi,bj) = -EmPmR(i,j,bi,bj) |
| 160 |
ENDDO |
| 161 |
ENDDO |
| 162 |
DO j=1,sNy |
| 163 |
DO i=1,sNx |
| 164 |
ks = ksurfC(I,J,bi,bj) |
| 165 |
dEtaHdt(i,j,bi,bj) = -hDivFlow(i,j)*recip_rA(i,j,bi,bj) |
| 166 |
& *recip_deepFac2F(ks) |
| 167 |
& -facEmP*EmPmR(i,j,bi,bj) |
| 168 |
ENDDO |
| 169 |
ENDDO |
| 170 |
ENDIF |
| 171 |
C------------------------------------ |
| 172 |
|
| 173 |
ENDIF |
| 174 |
|
| 175 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 176 |
|
| 177 |
IF (exactConserv .AND. myTime.NE.startTime) THEN |
| 178 |
C-- Update etaN at the end of the time step : |
| 179 |
C Incorporate the Implicit part of -Divergence(Barotropic_Flow) |
| 180 |
|
| 181 |
IF (implicDiv2Dflow.EQ. 0. _d 0) THEN |
| 182 |
DO j=1-Oly,sNy+Oly |
| 183 |
DO i=1-Olx,sNx+Olx |
| 184 |
etaN(i,j,bi,bj) = etaH(i,j,bi,bj) |
| 185 |
ENDDO |
| 186 |
ENDDO |
| 187 |
ELSE |
| 188 |
DO j=1,sNy |
| 189 |
DO i=1,sNx |
| 190 |
etaN(i,j,bi,bj) = etaH(i,j,bi,bj) |
| 191 |
& + implicDiv2Dflow*dEtaHdt(i,j,bi,bj)*deltaTfreesurf |
| 192 |
ENDDO |
| 193 |
ENDDO |
| 194 |
ENDIF |
| 195 |
|
| 196 |
#ifdef ALLOW_OBCS |
| 197 |
C-- Apply OBC to etaN if NonLin-FreeSurf, reset to zero otherwise: |
| 198 |
IF ( useOBCS ) CALL OBCS_APPLY_ETA( bi, bj, etaN, myThid ) |
| 199 |
#endif /* ALLOW_OBCS */ |
| 200 |
|
| 201 |
ENDIF |
| 202 |
|
| 203 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 204 |
|
| 205 |
# ifdef NONLIN_FRSURF |
| 206 |
IF (select_rStar .NE. 0) THEN |
| 207 |
# ifndef DISABLE_RSTAR_CODE |
| 208 |
DO j=1,sNy |
| 209 |
DO i=1,sNx |
| 210 |
rStarDhCDt(i,j,bi,bj) = |
| 211 |
& dEtaHdt(i,j,bi,bj)*recip_Rcol(i,j,bi,bj) |
| 212 |
ENDDO |
| 213 |
ENDDO |
| 214 |
# endif /* DISABLE_RSTAR_CODE */ |
| 215 |
ENDIF |
| 216 |
# endif /* NONLIN_FRSURF */ |
| 217 |
|
| 218 |
#endif /* EXACT_CONSERV */ |
| 219 |
|
| 220 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 221 |
|
| 222 |
DO k=Nr,1,-1 |
| 223 |
C-- Integrate continuity vertically for vertical velocity |
| 224 |
|
| 225 |
CALL INTEGRATE_FOR_W( |
| 226 |
I bi, bj, k, uFld, vFld, addMass, |
| 227 |
O wVel, |
| 228 |
I myThid ) |
| 229 |
|
| 230 |
#ifdef EXACT_CONSERV |
| 231 |
IF ( k.EQ.Nr .AND. myTime.NE.baseTime .AND. usingPCoords |
| 232 |
& .AND. fluidIsWater .AND. useRealFreshWaterFlux ) THEN |
| 233 |
|
| 234 |
DO j=1,sNy |
| 235 |
DO i=1,sNx |
| 236 |
wVel(i,j,k,bi,bj) = wVel(i,j,k,bi,bj) |
| 237 |
& +mass2rUnit*PmEpR(i,j,bi,bj)*maskC(i,j,k,bi,bj) |
| 238 |
ENDDO |
| 239 |
ENDDO |
| 240 |
|
| 241 |
ENDIF |
| 242 |
#endif /* EXACT_CONSERV */ |
| 243 |
|
| 244 |
#ifdef ALLOW_OBCS |
| 245 |
C-- Apply OBC to W if in N-H mode, reset to zero otherwise: |
| 246 |
IF ( useOBCS ) CALL OBCS_APPLY_W( bi, bj, k, wVel, myThid ) |
| 247 |
#endif /* ALLOW_OBCS */ |
| 248 |
|
| 249 |
C- End DO k=Nr,1,-1 |
| 250 |
ENDDO |
| 251 |
|
| 252 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 253 |
|
| 254 |
RETURN |
| 255 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph