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jmc |
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C $Header: /u/gcmpack/MITgcm/pkg/diagnostics/diagnostics_calc_phivel.F,v 1.2 2011/06/21 18:00:48 jmc Exp $ |
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jmc |
1.1 |
C $Name: $ |
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#include "DIAG_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP 0 |
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C !ROUTINE: DIAGNOSTICS_CALC_PHIVEL |
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C !INTERFACE: |
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SUBROUTINE DIAGNOSTICS_CALC_PHIVEL( |
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I listId, md, ndId, ip, im, lm, |
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jmc |
1.2 |
U qtmp1, qtmp2, |
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jmc |
1.1 |
I myTime, myIter, myThid ) |
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C !DESCRIPTION: |
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C Compute Velocity Potential |
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C !USES: |
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IMPLICIT NONE |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "DIAGNOSTICS_SIZE.h" |
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#include "DIAGNOSTICS.h" |
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INTEGER NrMax |
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PARAMETER( NrMax = numLevels ) |
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C !INPUT PARAMETERS: |
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C listId :: Diagnostics list number being written |
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C md :: field number in the list "listId". |
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C ndId :: diagnostics Id number (in available diagnostics list) |
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C ip :: diagnostics pointer to storage array |
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C im :: counter-mate pointer to storage array |
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C lm :: index in the averageCycle |
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jmc |
1.2 |
C qtmp1 :: horizontal velocity input diag., u-component |
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C qtmp2 :: horizontal velocity input diag., v-component |
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jmc |
1.1 |
C myTime :: current time of simulation (s) |
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C myIter :: current iteration number |
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C myThid :: my Thread Id number |
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INTEGER listId, md, ndId, ip, im, lm |
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_RL qtmp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy,NrMax,nSx,nSy) |
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_RL qtmp2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,NrMax,nSx,nSy) |
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_RL myTime |
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INTEGER myIter, myThid |
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jmc |
1.2 |
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C !OUTPUT PARAMETERS: |
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C qtmp1 :: horizontal-velocity potential |
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C qtmp2 :: horizontal-velocity stream-function |
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1.1 |
CEOP |
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C !FUNCTIONS: |
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C !LOCAL VARIABLES: |
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C i,j,k :: loop indices |
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INTEGER i, j, k |
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INTEGER bi, bj |
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jmc |
1.3 |
c CHARACTER*(MAX_LEN_MBUF) msgBuf |
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jmc |
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jmc |
1.2 |
INTEGER ks |
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jmc |
1.1 |
INTEGER numIters |
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LOGICAL normaliseMatrice, diagNormaliseRHS |
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_RL residCriter, firstResidual, lastResidual |
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_RL a2dMax, a2dNorm |
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_RL rhsMax, rhsNorm |
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_RS aW2d(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS aS2d(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL b2d (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL x2d (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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jmc |
1.2 |
DO ks = 1,kdiag(ndId) |
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k = NINT(levs(ks,listId)) |
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1.1 |
C-- Solve for velocity potential for each level: |
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a2dMax = 0. _d 0 |
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rhsMax = 0. _d 0 |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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C- Initialise fist guess & RHS |
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DO j = 1-Oly,sNy+Oly |
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DO i = 1-Olx,sNx+Olx |
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b2d(i,j,bi,bj) = 0. |
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x2d(i,j,bi,bj) = 0. |
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ENDDO |
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ENDDO |
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C- calculate cg2d matrix: |
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DO j = 1,sNy+1 |
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DO i = 1,sNx+1 |
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aW2d(i,j,bi,bj) = dyG(i,j,bi,bj)*recip_dxC(i,j,bi,bj) |
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& *drF(k)*hFacW(i,j,k,bi,bj) |
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& *maskInW(i,j,bi,bj) |
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aS2d(i,j,bi,bj) = dxG(i,j,bi,bj)*recip_dyC(i,j,bi,bj) |
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& *drF(k)*hFacS(i,j,k,bi,bj) |
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& *maskInS(i,j,bi,bj) |
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a2dMax = MAX(a2dMax,aW2d(i,j,bi,bj)) |
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a2dMax = MAX(a2dMax,aS2d(i,j,bi,bj)) |
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ENDDO |
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ENDDO |
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C- calculate RHS = Div(uVel,vVel): |
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DO j = 1,sNy+1 |
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DO i = 1,sNx+1 |
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uTrans(i,j) = dyG(i,j,bi,bj)*drF(k) |
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& *qtmp1(i,j,ks,bi,bj)*maskInW(i,j,bi,bj) |
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vTrans(i,j) = dxG(i,j,bi,bj)*drF(k) |
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& *qtmp2(i,j,ks,bi,bj)*maskInS(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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DO j = 1,sNy |
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DO i = 1,sNx |
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b2d(i,j,bi,bj) = ( ( uTrans(i+1,j) - uTrans(i,j) ) |
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& + ( vTrans(i,j+1) - vTrans(i,j) ) |
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& )*maskInC(i,j,bi,bj) |
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rhsMax = MAX(ABS(b2d(I,J,bi,bj)),rhsMax) |
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ENDDO |
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ENDDO |
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C- end bi,bj loops |
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ENDDO |
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ENDDO |
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C- Normalise Matrice & RHS : |
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diagNormaliseRHS = cg2dTargetResWunit.LE.0. |
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normaliseMatrice = .TRUE. |
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diagNormaliseRHS = .TRUE. |
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a2dNorm = 1. _d 0 |
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rhsNorm = 1. _d 0 |
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IF ( normaliseMatrice ) THEN |
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_GLOBAL_MAX_RL( a2dMax, myThid ) |
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IF ( a2dMax .GE. 0. _d 0 ) a2dNorm = 1. _d 0/a2dMax |
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ENDIF |
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IF ( diagNormaliseRHS ) THEN |
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_GLOBAL_MAX_RL( rhsMax, myThid ) |
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IF ( rhsMax .GE. 0. _d 0 ) rhsNorm = 1. _d 0/(a2dNorm*rhsMax) |
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residCriter = cg2dTargetResidual |
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ELSE |
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residCriter = a2dNorm * cg2dTargetResWunit |
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& * globalArea / deltaTmom |
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ENDIF |
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IF ( normaliseMatrice .OR. diagNormaliseRHS ) THEN |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j = 1,sNy+1 |
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DO i = 1,sNx+1 |
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aW2d(i,j,bi,bj) = aW2d(i,j,bi,bj)*a2dNorm |
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aS2d(i,j,bi,bj) = aS2d(i,j,bi,bj)*a2dNorm |
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b2d(i,j,bi,bj) = b2d(i,j,bi,bj) *a2dNorm*rhsNorm |
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c x2d(i,j,bi,bj) = x2d(i,j,bi,bj) *rhsNorm |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF |
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IF ( debugLevel.GE.debLevA .AND. k.EQ.1 ) THEN |
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_BEGIN_MASTER( myThid ) |
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WRITE(standardMessageUnit,'(A,I9,2(A,1P1E13.6),A,1P1E9.2)') |
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& ' diag_cg2d (it=', myIter,') a2dNorm,rhsNorm=', a2dNorm, |
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& ' ,', rhsNorm, ' ; Criter=', residCriter |
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_END_MASTER( myThid ) |
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ENDIF |
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numIters = cg2dMaxIters |
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CALL DIAG_CG2D( |
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I aW2d, aS2d, b2d, |
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I residCriter, |
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O firstResidual, lastResidual, |
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U x2d, numIters, |
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I myThid ) |
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IF ( debugLevel.GE.debLevA ) THEN |
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_BEGIN_MASTER( myThid ) |
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WRITE(standardMessageUnit,'(A,I4,A,I6,A,1P2E17.9)') |
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& ' diag_cg2d : k=', k, ' , iters=', numIters, |
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& ' ; ini,last_Res=', firstResidual, lastResidual |
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_END_MASTER( myThid ) |
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ENDIF |
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c _EXCH_XY_RL( x2d, myThid ) |
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C- Un-normalise the answer |
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IF (diagNormaliseRHS) THEN |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j = 1,sNy |
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DO i = 1,sNx |
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c x2d(i,j,bi,bj) = x2d(i,j,bi,bj) /rhsNorm |
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jmc |
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qtmp1(i,j,ks,bi,bj) = x2d(i,j,bi,bj)/rhsNorm |
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jmc |
1.1 |
ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDDO |
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RETURN |
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END |
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