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baylor |
1.5 |
C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_hdissip.F,v 1.4 2005/09/16 19:32:20 baylor Exp $ |
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baylor |
1.2 |
C $Name: $ |
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adcroft |
1.1 |
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#include "MOM_COMMON_OPTIONS.h" |
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SUBROUTINE MOM_HDISSIP( |
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I bi,bj,k, |
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baylor |
1.4 |
I hDiv,vort3,tension,strain,KE, |
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I hFacZ, |
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adcroft |
1.1 |
O uDissip,vDissip, |
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I myThid) |
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IMPLICIT NONE |
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C |
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C Calculate horizontal dissipation terms in terms of tension and strain |
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C |
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C Du = d/dx At Tension + d/dy As Strain |
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C Dv = d/dx As Strain - d/dy At Tension |
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C == Global variables == |
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#include "SIZE.h" |
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baylor |
1.2 |
#include "EEPARAMS.h" |
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adcroft |
1.1 |
#include "GRID.h" |
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baylor |
1.2 |
#include "PARAMS.h" |
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adcroft |
1.1 |
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C == Routine arguments == |
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INTEGER bi,bj,k |
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baylor |
1.4 |
_RL hDiv(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vort3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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adcroft |
1.1 |
_RL tension(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL strain(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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baylor |
1.4 |
_RL KE(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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adcroft |
1.1 |
_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL uDissip(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vDissip(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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C == Local variables == |
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INTEGER I,J |
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baylor |
1.4 |
_RL viscAh_t(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_s(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_t(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_s(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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LOGICAL harmonic, biharmonic, useVariableViscosity |
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baylor |
1.2 |
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baylor |
1.4 |
CALL MOM_CALC_VISC( |
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I bi,bj,k, |
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O viscAh_s,viscAh_t,viscA4_s,viscA4_t, |
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O harmonic,biharmonic,useVariableViscosity, |
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baylor |
1.5 |
I hDiv,vort3,tension,strain,KE,hfacZ, |
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baylor |
1.4 |
I myThid) |
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adcroft |
1.1 |
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baylor |
1.4 |
C - Laplacian and bi-harmonic terms |
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IF (harmonic) THEN |
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DO j=2-Oly,sNy+Oly-1 |
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DO i=2-Olx,sNx+Olx-1 |
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uDissip(i,j) = |
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& recip_dyg(i,j,bi,bj)*recip_dyg(i,j,bi,bj) |
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& *recip_dxc(i,j,bi,bj) |
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& *( |
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& dyf( i , j ,bi,bj)*dyf( i , j ,bi,bj) |
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& *viscAh_t( i , j )*tension( i , j ) |
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& -dyf(i-1, j ,bi,bj)*dyf(i-1, j ,bi,bj) |
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& *viscAh_t(i-1, j )*tension(i-1, j ) |
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& ) |
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& +recip_dxc(i,j,bi,bj)*recip_dxc(i,j,bi,bj) |
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& *recip_dyg(i,j,bi,bj) |
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& *( |
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& dxv( i ,j+1,bi,bj)*dxv( i ,j+1,bi,bj) |
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& *viscAh_s(i,j+1)*strain( i ,j+1) |
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& -dxv( i , j ,bi,bj)*dxv( i , j ,bi,bj) |
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& *viscAh_s(i, j )*strain( i , j ) |
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& ) |
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vDissip(i,j) = |
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& recip_dyc(i,j,bi,bj)*recip_dyc(i,j,bi,bj) |
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& *recip_dxg(i,j,bi,bj) |
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& *( |
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& dyu(i+1, j ,bi,bj)*dyu(i+1, j ,bi,bj) |
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& *viscAh_s(i+1,j)*strain(i+1,j) |
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& -dyu( i , j ,bi,bj)*dyu( i , j ,bi,bj) |
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& *viscAh_s( i ,j)*strain( i ,j) |
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& ) |
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& -recip_dxg(i,j,bi,bj)*recip_dxg(i,j,bi,bj) |
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& *recip_dyc(i,j,bi,bj) |
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& *( |
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& dxf( i , j ,bi,bj)*dxf( i , j ,bi,bj) |
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& *viscAh_t(i, j )*tension(i, j ) |
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& -dxf( i ,j-1,bi,bj)*dxf( i ,j-1,bi,bj) |
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& *viscAh_t(i,j-1)*tension(i,j-1) |
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& ) |
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adcroft |
1.1 |
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baylor |
1.4 |
ENDDO |
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adcroft |
1.1 |
ENDDO |
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baylor |
1.4 |
ENDIF |
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IF (biharmonic) THEN |
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STOP 'MOM_HDISSIP: BIHARMONIC NOT ALLOWED WITH STRAIN-TENSION' |
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ENDIF |
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adcroft |
1.1 |
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RETURN |
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END |
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