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C $Header: /u/gcmpack/MITgcm/pkg/obcs/obcs_balance_flow.F,v 1.8 2016/07/06 22:48:56 jmc Exp $ |
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C $Name: $ |
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|
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#include "OBCS_OPTIONS.h" |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP |
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C !ROUTINE: OBCS_BALANCE_FLOW |
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|
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C !INTERFACE: |
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SUBROUTINE OBCS_BALANCE_FLOW( myTime, myIter, myThid ) |
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|
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C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE OBCS_BALANCE_FLOW |
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C | o Modify OB normal flow to ensure no net inflow |
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C *==========================================================* |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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C === Global variables === |
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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 "OBCS_PARAMS.h" |
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#include "OBCS_GRID.h" |
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#include "OBCS_FIELDS.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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_RL myTime |
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INTEGER myIter |
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INTEGER myThid |
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CEOP |
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|
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#ifdef ALLOW_OBCS |
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#ifdef ALLOW_OBCS_BALANCE |
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|
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C !FUNCTIONS: |
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|
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C !LOCAL VARIABLES: |
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C bi, bj :: tile indices |
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C i,j,k :: loop indices |
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C iB, jB :: local index of open boundary |
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C msgBuf :: Informational/error message buffer |
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INTEGER bi, bj |
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INTEGER i, j, k, iB, jB |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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_RL areaOB, areaE, areaW, areaN, areaS, tmpA |
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_RL inFlow, flowE, flowW, flowN, flowS |
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_RL tileArea(nSx,nSy) |
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_RL tileFlow(nSx,nSy) |
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_RL tileAreaOB(nSx,nSy) |
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_RL tileInFlow(nSx,nSy) |
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LOGICAL flag |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Old method (OBCS_balanceFac < 0): balance each OB separately |
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C-- New method applies to all OB with BCS_balanceFac >=0 : |
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C ensure that the net inflow through all OB is balanced by correcting |
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C each OB normal flow with a uniform velocity, using the corresponding |
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C weight factor OBCS_balanceFac. |
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C e.g., OBCS_balanceFac_E,W,N,S= 1, -1, 2, 0 : |
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C => correct Western OBWu (by substracting a uniform velocity) to ensure |
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C zero net transport through Western OB |
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C => correct Eastern and Northern normal flow (twice larger Northern |
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C velocity correction than Eastern correction) to ensure that |
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C the total inflow through E+N+S OB is balanced |
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|
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_ENTER('OBCS_BALANCE_FLOW',myThid) |
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#endif |
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|
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C-- Integrate the transport through each OB |
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flag = .FALSE. |
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areaOB = 0. _d 0 |
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inFlow = 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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tileAreaOB(bi,bj) = 0. |
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tileInFlow(bi,bj) = 0. |
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ENDDO |
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ENDDO |
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|
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#ifdef ALLOW_OBCS_EAST |
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areaE = 0. _d 0 |
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flowE = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacE.GT.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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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBE(bi,bj) ) THEN |
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DO k=1,Nr |
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DO j=1,sNy |
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iB = OB_Ie(j,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (sNx+1) rather than with halo region (i=1) |
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IF ( iB.NE.OB_indexNone .AND. iB.GT.1 ) THEN |
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tmpA = drF(k)*_hFacW(iB,j,k,bi,bj)*dyG(iB,j,bi,bj) |
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& *maskInW(iB,j,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBEu(j,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacE.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) - tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacE |
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ENDIF |
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areaE = areaE + tileArea(bi,bj) |
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flowE = flowE + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaE,flowE=', myIter, areaE, flowE |
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IF ( OBCS_balanceFacE.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaE, myThid ) |
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IF ( areaE.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowE, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBEu:', flowE, -flowE/areaE |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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flowE = -flowE/areaE |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_EAST */ |
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|
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#ifdef ALLOW_OBCS_WEST |
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areaW = 0. _d 0 |
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flowW = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacW.GT.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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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBW(bi,bj) ) THEN |
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DO k=1,Nr |
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DO j=1,sNy |
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iB = OB_Iw(j,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (i=0) rather than with halo region (i=sNx) |
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IF ( iB.NE.OB_indexNone .AND. iB.LT.sNx ) THEN |
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tmpA = drF(k)*_hFacW(1+iB,j,k,bi,bj)*dyG(1+iB,j,bi,bj) |
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& *maskInW(1+iB,j,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBWu(j,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacW.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) + tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacW |
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ENDIF |
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areaW = areaW + tileArea(bi,bj) |
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flowW = flowW + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaW,flowW=', myIter, areaW, flowW |
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IF ( OBCS_balanceFacW.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaW, myThid ) |
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IF ( areaW.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowW, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBWu:', flowW, -flowW/areaW |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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flowW = -flowW/areaW |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_WEST */ |
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|
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#ifdef ALLOW_OBCS_NORTH |
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areaN = 0. _d 0 |
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flowN = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacN.GT.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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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBN(bi,bj) ) THEN |
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DO k=1,Nr |
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DO i=1,sNx |
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jB = OB_Jn(i,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (sNy+1) rather than with halo region (j=1) |
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IF ( jB.NE.OB_indexNone .AND. jB.GT.1 ) THEN |
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tmpA = drF(k)*_hFacS(i,jB,k,bi,bj)*dxG(i,jB,bi,bj) |
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& *maskInS(i,jB,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBNv(i,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacN.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) - tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacN |
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ENDIF |
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areaN = areaN + tileArea(bi,bj) |
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flowN = flowN + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaN,flowN=', myIter, areaN, flowN |
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IF ( OBCS_balanceFacN.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaN, myThid ) |
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IF ( areaN.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowN, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBNv:', flowN, -flowN/areaN |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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flowN = -flowN/areaN |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_NORTH */ |
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|
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#ifdef ALLOW_OBCS_SOUTH |
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areaS = 0. _d 0 |
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flowS = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacS.GT.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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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBS(bi,bj) ) THEN |
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DO k=1,Nr |
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DO i=1,sNx |
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jB = OB_Js(i,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (j=0) rather than with halo region (j=sNy) |
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IF ( jB.NE.OB_indexNone .AND. jB.LT.sNy ) THEN |
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tmpA = drF(k)*_hFacS(i,1+jB,k,bi,bj)*dxG(i,1+jB,bi,bj) |
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& *maskInS(i,1+jB,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBSv(i,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacS.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) + tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacS |
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ENDIF |
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areaS = areaS + tileArea(bi,bj) |
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flowS = flowS + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaS,flowS=', myIter, areaS, flowS |
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IF ( OBCS_balanceFacS.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaS, myThid ) |
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IF ( areaS.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowS, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBSv:', flowS, -flowS/areaS |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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flowS = -flowS/areaS |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_SOUTH */ |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Calculate a unique velocity correction for all (OBCS_balanceFac>0) OB |
| 284 |
C and correct each OB using corresponding weight factor OBCS_balanceFac |
| 285 |
|
| 286 |
IF ( flag ) CALL GLOBAL_SUM_TILE_RL( tileAreaOB, areaOB, myThid ) |
| 287 |
IF ( areaOB.GT.0. ) THEN |
| 288 |
CALL GLOBAL_SUM_TILE_RL( tileInFlow, inFlow, myThid ) |
| 289 |
IF ( debugLevel.GE.debLevC ) THEN |
| 290 |
WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
| 291 |
& myIter, ' ) correct for inFlow:', inFlow, inFlow/areaOB |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
| 294 |
ENDIF |
| 295 |
inFlow = inFlow / areaOB |
| 296 |
ENDIF |
| 297 |
IF ( OBCS_balanceFacE.GE.0. ) flowE = inFlow*OBCS_balanceFacE |
| 298 |
IF ( OBCS_balanceFacW.GE.0. ) flowW = -inFlow*OBCS_balanceFacW |
| 299 |
IF ( OBCS_balanceFacN.GE.0. ) flowN = inFlow*OBCS_balanceFacN |
| 300 |
IF ( OBCS_balanceFacS.GE.0. ) flowS = -inFlow*OBCS_balanceFacS |
| 301 |
|
| 302 |
IF ( debugLevel.GE.debLevC .AND. areaOB.GT.0. ) THEN |
| 303 |
WRITE(msgBuf,'(A,1P2E16.8)') |
| 304 |
& 'OBCS_balance correction to OBEu,OBWu:', flowE, flowW |
| 305 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 306 |
& SQUEEZE_RIGHT, myThid ) |
| 307 |
WRITE(msgBuf,'(A,1P2E16.8)') |
| 308 |
& 'OBCS_balance correction to OBNv,OBSv:', flowN, flowS |
| 309 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 310 |
& SQUEEZE_RIGHT, myThid ) |
| 311 |
ENDIF |
| 312 |
|
| 313 |
c IF ( .NOT.useOBCSbalance ) RETURN |
| 314 |
|
| 315 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 316 |
C-- Add correction: |
| 317 |
|
| 318 |
#ifdef ALLOW_OBCS_EAST |
| 319 |
IF ( OBCS_balanceFacE.NE.0. ) THEN |
| 320 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 321 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 322 |
IF ( tileHasOBE(bi,bj) ) THEN |
| 323 |
DO k=1,Nr |
| 324 |
DO j=1-OLy,sNy+OLy |
| 325 |
iB = OB_Ie(j,bi,bj) |
| 326 |
IF ( iB.NE.OB_indexNone ) THEN |
| 327 |
OBEu(j,k,bi,bj) = OBEu(j,k,bi,bj) |
| 328 |
& + flowE*maskW(iB,j,k,bi,bj) |
| 329 |
ENDIF |
| 330 |
ENDDO |
| 331 |
ENDDO |
| 332 |
ENDIF |
| 333 |
ENDDO |
| 334 |
ENDDO |
| 335 |
ENDIF |
| 336 |
#endif /* ALLOW_OBCS_EAST */ |
| 337 |
|
| 338 |
#ifdef ALLOW_OBCS_WEST |
| 339 |
IF ( OBCS_balanceFacW.NE.0. ) THEN |
| 340 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 341 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 342 |
IF ( tileHasOBW(bi,bj) ) THEN |
| 343 |
DO k=1,Nr |
| 344 |
DO j=1-OLy,sNy+OLy |
| 345 |
iB = OB_Iw(j,bi,bj) |
| 346 |
IF ( iB.NE.OB_indexNone ) THEN |
| 347 |
OBWu(j,k,bi,bj) = OBWu(j,k,bi,bj) |
| 348 |
& + flowW*maskW(1+iB,j,k,bi,bj) |
| 349 |
ENDIF |
| 350 |
ENDDO |
| 351 |
ENDDO |
| 352 |
ENDIF |
| 353 |
ENDDO |
| 354 |
ENDDO |
| 355 |
ENDIF |
| 356 |
#endif /* ALLOW_OBCS_WEST */ |
| 357 |
|
| 358 |
#ifdef ALLOW_OBCS_NORTH |
| 359 |
IF ( OBCS_balanceFacN.NE.0. ) THEN |
| 360 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 361 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 362 |
IF ( tileHasOBN(bi,bj) ) THEN |
| 363 |
DO k=1,Nr |
| 364 |
DO i=1-OLx,sNx+OLx |
| 365 |
jB = OB_Jn(i,bi,bj) |
| 366 |
IF ( jB.NE.OB_indexNone ) THEN |
| 367 |
OBNv(i,k,bi,bj) = OBNv(i,k,bi,bj) |
| 368 |
& + flowN*maskS(i,jB,k,bi,bj) |
| 369 |
ENDIF |
| 370 |
ENDDO |
| 371 |
ENDDO |
| 372 |
ENDIF |
| 373 |
ENDDO |
| 374 |
ENDDO |
| 375 |
ENDIF |
| 376 |
#endif /* ALLOW_OBCS_NORTH */ |
| 377 |
|
| 378 |
#ifdef ALLOW_OBCS_SOUTH |
| 379 |
IF ( OBCS_balanceFacS.NE.0. ) THEN |
| 380 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 381 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 382 |
IF ( tileHasOBS(bi,bj) ) THEN |
| 383 |
DO k=1,Nr |
| 384 |
DO i=1-OLx,sNx+OLx |
| 385 |
jB = OB_Js(i,bi,bj) |
| 386 |
IF ( jB.NE.OB_indexNone ) THEN |
| 387 |
OBSv(i,k,bi,bj) = OBSv(i,k,bi,bj) |
| 388 |
& + flowS*maskS(i,1+jB,k,bi,bj) |
| 389 |
ENDIF |
| 390 |
ENDDO |
| 391 |
ENDDO |
| 392 |
ENDIF |
| 393 |
ENDDO |
| 394 |
ENDDO |
| 395 |
ENDIF |
| 396 |
#endif /* ALLOW_OBCS_SOUTH */ |
| 397 |
|
| 398 |
#ifdef ALLOW_DEBUG |
| 399 |
IF (debugMode) CALL DEBUG_LEAVE('OBCS_BALANCE_FLOW',myThid) |
| 400 |
#endif |
| 401 |
|
| 402 |
#endif /* ALLOW_OBCS_BALANCE */ |
| 403 |
#endif /* ALLOW_OBCS */ |
| 404 |
|
| 405 |
RETURN |
| 406 |
END |
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