/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_fluxlimit_adv_y.F
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revision 1.3 by adcroft, Fri Sep 21 13:11:43 2001 UTC revision 1.3.6.1 by heimbach, Fri Mar 7 03:55:23 2003 UTC
# Line 54  C !LOCAL VARIABLES: ==================== Line 54  C !LOCAL VARIABLES: ====================
54  C  i,j                  :: loop indices  C  i,j                  :: loop indices
55  C  Cr                   :: slope ratio  C  Cr                   :: slope ratio
56  C  Rjm,Rj,Rjp           :: differences at j-1,j,j+1  C  Rjm,Rj,Rjp           :: differences at j-1,j,j+1
57    C  vFld                 :: velocity [m/s], meridional component
58        INTEGER i,j        INTEGER i,j
59        _RL Cr,Rjm,Rj,Rjp        _RL Cr,Rjm,Rj,Rjp
60          _RL vFld
61  C Statement function provides Limiter(Cr)  C Statement function provides Limiter(Cr)
62  #include "GAD_FLUX_LIMITER.h"  #include "GAD_FLUX_LIMITER.h"
63  CEOP  CEOP
# Line 67  CEOP Line 69  CEOP
69        ENDDO        ENDDO
70        DO j=1-Oly+2,sNy+Oly-1        DO j=1-Oly+2,sNy+Oly-1
71         DO i=1-Olx,sNx+Olx         DO i=1-Olx,sNx+Olx
72    
73    c       vFld = vVel(i,j,k,bi,bj)
74            vFld = vTrans(i,j)*recip_dxG(i,j,bi,bj)
75         &       *recip_drF(k)*recip_hFacS(i,j,k,bi,bj)
76          Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)          Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)
77          Rj=(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)          Rj=(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)
78          Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)          Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)
79    
80          IF (Rj.NE.0.) THEN          IF (Rj.NE.0.) THEN
81           IF (vTrans(i,j).GT.0) THEN           IF (vTrans(i,j).GT.0) THEN
82             Cr=Rjm/Rj             Cr=Rjm/Rj
# Line 88  CEOP Line 95  CEOP
95       &   vTrans(i,j)*(Tracer(i,j)+Tracer(i,j-1))*0.5 _d 0       &   vTrans(i,j)*(Tracer(i,j)+Tracer(i,j-1))*0.5 _d 0
96       &   -0.5*(       &   -0.5*(
97       &        (1-Cr)*ABS(vTrans(i,j))       &        (1-Cr)*ABS(vTrans(i,j))
98       &        +vTrans(i,j)*vVel(i,j,k,bi,bj)*deltaT       &        +vTrans(i,j)*vFld*deltaT
99       &         *recip_dyC(i,j,bi,bj)*Cr       &         *recip_dyC(i,j,bi,bj)*Cr
100       &        )*Rj       &        )*Rj
101         ENDDO         ENDDO
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