/[MITgcm]/MITgcm/pkg/mom_common/mom_v_sidedrag.F
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revision 1.7 by jmc, Thu Sep 29 02:31:55 2005 UTC revision 1.8 by jmc, Thu Sep 29 03:33:28 2005 UTC
# Line 28  C !USES: =============================== Line 28  C !USES: ===============================
28  #include "EEPARAMS.h"  #include "EEPARAMS.h"
29  #include "PARAMS.h"  #include "PARAMS.h"
30  #include "GRID.h"  #include "GRID.h"
31    #include "SURFACE.h"
32    
33  C !INPUT PARAMETERS: ===================================================  C !INPUT PARAMETERS: ===================================================
34  C  bi,bj                :: tile indices  C  bi,bj                :: tile indices
# Line 54  C  i,j                  :: loop indices Line 55  C  i,j                  :: loop indices
55  C  hFacZClosedE         :: fractional open water to east  C  hFacZClosedE         :: fractional open water to east
56  C  hFacZClosedW         :: fractional open water to west  C  hFacZClosedW         :: fractional open water to west
57        INTEGER I,J        INTEGER I,J
58        _RS hFacZClosedE,hFacZClosedW        _RL hFacZClosedE,hFacZClosedW
59  CEOP  CEOP
60    
61  #ifdef SIDEDRAG_OLD_VERSION  #ifdef SIDEDRAG_OLD_VERSION
62        _RL Ahtmp,A4tmp        _RL Ahtmp,A4tmp
63    
64  C     - Laplacian  and bi-harmonic terms  C     - Laplacian  and bi-harmonic terms
65        DO j=1-Oly,sNy+Oly-1        DO j=2-Oly,sNy+Oly-1
66         DO i=1-Olx,sNx+Olx-1         DO i=2-Olx,sNx+Olx-1
67    #ifdef NONLIN_FRSURF
68    C-      this will not give any side-drag along thin wall.
69    C       (but this might just be what we want ...)
70            hFacZClosedW = h0FacS(i,j,k,bi,bj) - h0FacS(i-1,j,k,bi,bj)
71            hFacZClosedE = h0FacS(i,j,k,bi,bj) - h0FacS(i+1,j,k,bi,bj)
72            hFacZClosedW = MAX( 0. _d 0, hFacZClosedW )
73            hFacZClosedE = MAX( 0. _d 0, hFacZClosedE )
74    #else
75          hFacZClosedW = _hFacS(i,j,k,bi,bj) - hFacZ(i,j)          hFacZClosedW = _hFacS(i,j,k,bi,bj) - hFacZ(i,j)
76          hFacZClosedE = _hFacS(i,j,k,bi,bj) - hFacZ(i+1,j)          hFacZClosedE = _hFacS(i,j,k,bi,bj) - hFacZ(i+1,j)
77    #endif
78          Ahtmp=min(viscAh+viscAhGrid*rAs(i,j,bi,bj)/deltaTmom,          Ahtmp=min(viscAh+viscAhGrid*rAs(i,j,bi,bj)/deltaTmom,
79       &            viscAhMax)       &            viscAhMax)
80          A4tmp=min(viscA4+viscA4Grid*(rAs(i,j,bi,bj)**2)/deltaTmom,          A4tmp=min(viscA4+viscA4Grid*(rAs(i,j,bi,bj)**2)/deltaTmom,
# Line 95  C     - Laplacian  and bi-harmonic terms Line 105  C     - Laplacian  and bi-harmonic terms
105  #else /* SIDEDRAG_OLD_VERSION */  #else /* SIDEDRAG_OLD_VERSION */
106    
107  C     - Laplacian  and bi-harmonic terms  C     - Laplacian  and bi-harmonic terms
108        DO j=1-Oly,sNy+Oly-1        DO j=2-Oly,sNy+Oly-1
109         DO i=1-Olx,sNx+Olx-1         DO i=2-Olx,sNx+Olx-1
110          hFacZClosedW = _hFacS(i,j,k,bi,bj) - hFacZ(i,j)  C-      this will not give any side-drag along thin wall.
111          hFacZClosedE = _hFacS(i,j,k,bi,bj) - hFacZ(i+1,j)  C       (but this might just be what we want ...)
112    #ifdef NONLIN_FRSURF
113            hFacZClosedW = h0FacS(i,j,k,bi,bj) - h0FacS(i-1,j,k,bi,bj)
114            hFacZClosedE = h0FacS(i,j,k,bi,bj) - h0FacS(i+1,j,k,bi,bj)
115    #else
116            hFacZClosedW = hFacS(i,j,k,bi,bj) - hFacS(i-1,j,k,bi,bj)
117            hFacZClosedE = hFacS(i,j,k,bi,bj) - hFacS(i+1,j,k,bi,bj)
118    #endif
119            hFacZClosedW = MAX( 0. _d 0, hFacZClosedW )
120            hFacZClosedE = MAX( 0. _d 0, hFacZClosedE )
121          vDragTerms(i,j) =          vDragTerms(i,j) =
122       &   -_recip_hFacS(i,j,k,bi,bj)       &   -_recip_hFacS(i,j,k,bi,bj)
123       &   *recip_drF(k)*recip_rAs(i,j,bi,bj)       &   *recip_drF(k)*recip_rAs(i,j,bi,bj)
124       &   *( hFacZClosedW*_dyU( i ,j,bi,bj)*_recip_dxV( i ,j,bi,bj)       &   *( hFacZClosedW*_dyU( i ,j,bi,bj)*_recip_dxV( i ,j,bi,bj)
 #ifdef ISOTROPIC_COS_SCALING  
125       &         *(viscAh_Z(i  ,j)*vFld(i,j)*cosFacV(J,bi,bj)       &         *(viscAh_Z(i  ,j)*vFld(i,j)*cosFacV(J,bi,bj)
126  #ifdef COSINEMETH_III  #ifdef COSINEMETH_III
127       &           -viscA4_Z(i  ,j)*del2v(i,j)*sqcosFacV(J,bi,bj))       &           -viscA4_Z(i  ,j)*del2v(i,j)*sqcosFacV(J,bi,bj))
128  #else  #else
129       &           -viscA4_Z(i  ,j)*del2v(i,j)*cosFacV(J,bi,bj))       &           -viscA4_Z(i  ,j)*del2v(i,j)*cosFacV(J,bi,bj))
130  #endif  #endif
 #else  
      &         *(viscAh_Z(i  ,j)*vFld(i,j)  
      &           -viscA4_Z(i  ,j)*del2v(i,j))  
 #endif  
131       &     +hFacZClosedE*_dyU(i+1,j,bi,bj)*_recip_dxV(i+1,j,bi,bj)       &     +hFacZClosedE*_dyU(i+1,j,bi,bj)*_recip_dxV(i+1,j,bi,bj)
 #ifdef ISOTROPIC_COS_SCALING  
132       &         *(viscAh_Z(i+1,j)*vFld(i,j)*cosFacV(J,bi,bj)       &         *(viscAh_Z(i+1,j)*vFld(i,j)*cosFacV(J,bi,bj)
133  #ifdef COSINEMETH_III  #ifdef COSINEMETH_III
134       &           -viscA4_Z(i+1,j)*del2v(i,j)*sqcosFacV(J,bi,bj))       &           -viscA4_Z(i+1,j)*del2v(i,j)*sqcosFacV(J,bi,bj))
135  #else  #else
136       &           -viscA4_Z(i+1,j)*del2v(i,j)*cosFacV(J,bi,bj))       &           -viscA4_Z(i+1,j)*del2v(i,j)*cosFacV(J,bi,bj))
137  #endif  #endif
 #else  
      &         *(viscAh_Z(i+1,j)*vFld(i,j)  
      &           -viscA4_Z(i+1,j)*del2v(i,j))  
 #endif  
138       &              )       &              )
139       &   *drF(k)*2.       &   *drF(k)*2.
140         ENDDO         ENDDO
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