C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/mom_common/mom_calc_smag_3d.F,v 1.3 2013/11/07 23:09:45 jmc Exp $ C $Name: $ #include "MOM_COMMON_OPTIONS.h" C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| CBOP C !ROUTINE: MOM_CALC_SMAG_3D C !INTERFACE: SUBROUTINE MOM_CALC_SMAG_3D( I str11, str22, str33, str12, str13, str23, O viscAh3d_00, viscAh3d_12, O viscAh3d_13, viscAh3d_23, I smag3D_hLsC, smag3D_hLsW, smag3D_hLsS, smag3D_hLsZ, I k, bi, bj, myThid ) C !DESCRIPTION: C Calculate Smagorinsky 3-D (harmonic) viscosities C at current level k (for viscAh3d_00 & viscAh3d_12) C and at level k+1 (for viscAh3d_13 & viscAh3d_23) C !USES: IMPLICIT NONE C == Global variables == #include "SIZE.h" #include "EEPARAMS.h" #include "PARAMS.h" #include "GRID.h" c#include "MOM_VISC.h" C !INPUT PARAMETERS: C str11 :: strain component Vxx @ grid-cell center C str22 :: strain component Vyy @ grid-cell center C str33 :: strain component Vzz @ grid-cell center C str12 :: strain component Vxy @ grid-cell corner C str13 :: strain component Vxz @ above uVel C str23 :: strain component Vyz @ above vVel C smag3D_hLsC :: horiz. grid length scale (power 2/3) at grid cell center C smag3D_hLsW :: horiz. grid length scale (power 2/3) at western edge C smag3D_hLsS :: horiz. grid length scale (power 2/3) at southern egde C smag3D_hLsZ :: horiz. grid length scale (power 2/3) at grid cell corner C k :: current level index C bi, bj :: tile indices C myThid :: my Thread Id number _RL str11(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) _RL str22(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) _RL str33(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) _RL str12(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) _RL str13(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr+1) _RL str23(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr+1) _RS smag3D_hLsC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RS smag3D_hLsW(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RS smag3D_hLsS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RS smag3D_hLsZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) INTEGER k, bi, bj INTEGER myThid C !OUTPUT PARAMETERS: C viscAh3d_00 :: Smagorinsky viscosity @ grid-cell center C viscAh3d_12 :: Smagorinsky viscosity @ grid-cell corner C viscAh3d_13 :: Smagorinsky viscosity @ above uVel C viscAh3d_23 :: Smagorinsky viscosity @ above vVel _RL viscAh3d_00(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) _RL viscAh3d_12(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) _RL viscAh3d_13(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr+1) _RL viscAh3d_23(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr+1) CEOP #ifdef ALLOW_SMAG_3D C !LOCAL VARIABLES: C S66 :: Sum of squared of the 3 strain component @ grid-cell center C S12 :: Squared of strain component Vxy @ grid-cell corner C S13 :: Squared of strain component Vxz @ above uVel C S23 :: Squared of strain component Vyz @ above vVel INTEGER i, j INTEGER kl, n _RL twoThird, tmpFac _RL S66(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) _RL S12(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) _RL S13(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) _RL S23(1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| twoThird = 2. _d 0 / 3. _d 0 DO n=1,2 kl = k + n - 1 IF ( kl.LE.Nr ) THEN DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx S66(i,j,n) = str11(i,j,kl)**2 & + str22(i,j,kl)**2 & + str33(i,j,kl)**2 S12(i,j,n) = str12(i,j,kl)**2 ENDDO ENDDO ELSE DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx S66(i,j,n) = 0. _d 0 S12(i,j,n) = 0. _d 0 ENDDO ENDDO ENDIF DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx S13(i,j,n) = str13(i,j,kl)**2 S23(i,j,n) = str23(i,j,kl)**2 ENDDO ENDDO ENDDO C-- ------------------------------------------------------------------ C-- calculate current level Smag viscosity coeff C-- ------------------------------------------------------------------ C Current level k --> n=1 kl = k n = 1 tmpFac = smag3D_coeff*twoRL*SQRT(twoRL)*drF(kl)**twoThird C viscAh3d_00 = sqrt( S11+S22+S33+2*(S12+S13+S23) ) @ grid-cell center DO j=1-OLy,sNy+OLy-1 DO i=1-OLx,sNx+OLx-1 viscAh3d_00(i,j,kl) = & smag3D_hLsC(i,j,bi,bj)*tmpFac*SQRT( & S66( i , j , n ) & + 0.5*( S12( i ,j+1, n )+S12(i+1,j+1, n ) & +S12( i , j , n )+S12(i+1, j , n ) ) & + 0.5*( S13( i , j , n )+S13(i+1, j , n ) & +S13( i , j ,n+1)+S13(i+1, j ,n+1) ) & + 0.5*( S23( i , j , n )+S23( i ,j+1, n ) & +S23( i , j ,n+1)+S23( i ,j+1,n+1) ) & ) ENDDO ENDDO C viscAh3d_12 = sqrt( S11+S22+S33+2*(S12+S13+S23) ) @ grid-cell corner DO j=2-OLy,sNy+OLy DO i=2-OLx,sNx+OLx viscAh3d_12(i,j,kl) = & smag3D_hLsZ(i,j,bi,bj)*tmpFac*SQRT( & 0.25*( S66(i-1, j , n )+S66( i , j , n ) & +S66(i-1,j-1, n )+S66( i ,j-1, n ) ) & + 2.0 * S12( i , j , n ) & + 0.5 *( S13( i ,j-1, n )+S13( i , j , n ) & +S13( i ,j-1,n+1)+S13( i , j ,n+1) ) & + 0.5 *( S23(i-1, j , n )+S23( i , j , n ) & +S23(i-1, j ,n+1)+S23( i , j ,n+1) ) & ) ENDDO ENDDO C-- ------------------------------------------------------------------ C-- calculate next level (k+1) viscosity coeff (uz,vz) C-- ------------------------------------------------------------------ IF ( k.EQ.1 ) THEN DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx viscAh3d_13(i,j,k) = 0. _d 0 viscAh3d_23(i,j,k) = 0. _d 0 ENDDO ENDDO ENDIF C Next level k+1 --> n=2 kl = k+1 n = 2 tmpFac = smag3D_coeff*twoRL*SQRT(twoRL)*drC(kl)**twoThird C viscAh3d_13 = sqrt( S11+S22+S33+2*(S12+S13+S23) ) @ above uVel DO j=1-OLy,sNy+OLy-1 DO i=2-OLx,sNx+OLx viscAh3d_13(i,j,kl) = & smag3D_hLsW(i,j,bi,bj)*tmpFac*SQRT( & 0.25*( S66(i-1, j ,n-1)+S66( i , j ,n-1) & +S66(i-1, j , n )+S66( i , j , n ) ) & + 0.5 *( S12( i , j ,n-1)+S12( i ,j+1,n-1) & +S12( i , j , n )+S12( i ,j+1, n ) ) & + 2.0 * S13( i , j , n ) & + 0.5 *( S23(i-1,j+1, n )+S23( i ,j+1, n ) & +S23(i-1, j , n )+S23( i , j , n ) ) & ) ENDDO ENDDO C viscAh3d_23 = sqrt( S11+S22+S33+2*(S12+S13+S23) ) @ above vVel DO j=2-OLy,sNy+OLy DO i=1-OLx,sNx+OLx-1 viscAh3d_23(i,j,kl) = & smag3D_hLsS(i,j,bi,bj)*tmpFac*SQRT( & 0.25*( S66( i ,j-1,n-1)+S66( i , j ,n-1) & +S66( i ,j-1, n )+S66( i , j , n ) ) & + 0.5 *( S12( i , j ,n-1)+S12(i+1, j ,n-1) & +S12( i , j , n )+S12(i+1, j , n ) ) & + 0.5 *( S13( i , j , n )+S13(i+1, j , n ) & +S13( i ,j-1, n )+S13(i+1,j-1, n ) ) & + 2.0 * S23( i , j , n ) & ) ENDDO ENDDO #ifdef ALLOW_DIAGNOSTICS c IF ( useDiagnostics.AND. k.EQ.Nr ) THEN c CALL DIAGNOSTICS_FILL( viscAh3d_00, 'Smag3D_C', c & 0, Nr, 2, bi, bj, myThid ) c ENDIF #endif #endif /* ALLOW_SMAG_3D */ RETURN END