/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_dst3_adv_y.F
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revision 1.4 by jmc, Fri Sep 24 16:53:46 2004 UTC revision 1.5 by heimbach, Sun Apr 3 16:05:34 2005 UTC
# Line 4  C $Name$ Line 4  C $Name$
4  #include "GAD_OPTIONS.h"  #include "GAD_OPTIONS.h"
5    
6        SUBROUTINE GAD_DST3_ADV_Y(        SUBROUTINE GAD_DST3_ADV_Y(
7       I           bi,bj,k,deltaT,       I           bi,bj,k,deltaTloc,
8       I           vTrans, vVel,       I           vTrans, vVel,
9       I           maskLocS, tracer,       I           maskLocS, tracer,
10       O           vT,       O           vT,
# Line 19  C     |================================= Line 19  C     |=================================
19  C     == GLobal variables ==  C     == GLobal variables ==
20  #include "SIZE.h"  #include "SIZE.h"
21  #include "GRID.h"  #include "GRID.h"
22    #include "EEPARAMS.h"
23    #include "PARAMS.h"
24  #include "GAD.h"  #include "GAD.h"
25    
26  C     == Routine arguments ==  C     == Routine arguments ==
27        INTEGER bi,bj,k        INTEGER bi,bj,k
28        _RL deltaT        _RL deltaTloc
29        _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
30        _RL vVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)        _RL vVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
31        _RS maskLocS(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RS maskLocS(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
# Line 37  C     vFld    :: velocity [m/s], meridio Line 39  C     vFld    :: velocity [m/s], meridio
39        _RL Rjm,Rj,Rjp,cfl,d0,d1        _RL Rjm,Rj,Rjp,cfl,d0,d1
40        _RL psiP,psiM,thetaP,thetaM        _RL psiP,psiM,thetaP,thetaM
41        _RL vFld        _RL vFld
42          _RL smallNo
43          _RL Rjjm,Rjjp
44    
45          IF (inAdMode) THEN
46           smallNo = 1.0D-20
47          ELSE
48           smallNo = 1.0D-20
49          ENDIF
50    
51        DO i=1-Olx,sNx+Olx        DO i=1-Olx,sNx+Olx
52         vT(i,1-Oly)=0.         vT(i,1-Oly)=0.
# Line 52  C     vFld    :: velocity [m/s], meridio Line 62  C     vFld    :: velocity [m/s], meridio
62  c       vFld = vVel(i,j,k,bi,bj)  c       vFld = vVel(i,j,k,bi,bj)
63          vFld = vTrans(i,j)*recip_dxG(i,j,bi,bj)          vFld = vTrans(i,j)*recip_dxG(i,j,bi,bj)
64       &       *recip_drF(k)*recip_hFacS(i,j,k,bi,bj)       &       *recip_drF(k)*recip_hFacS(i,j,k,bi,bj)
65          cfl=abs(vFld*deltaT*recip_dyC(i,j,bi,bj))          cfl=abs(vFld*deltaTloc*recip_dyC(i,j,bi,bj))
66          d0=(2.-cfl)*(1.-cfl)*oneSixth          d0=(2.-cfl)*(1.-cfl)*oneSixth
67          d1=(1.-cfl*cfl)*oneSixth          d1=(1.-cfl*cfl)*oneSixth
68  c       thetaP=0.          IF ( ABS(Rj).LT.smallNo .OR.
69  c       IF (Rj.NE.0.) thetaP=Rjm/Rj       &       ABS(Rjm).LT.smallNo ) THEN
70          thetaP=Rjm/(1.D-20+Rj)           thetaP=0.
71          psiP=d0+d1*thetaP           psiP=0.
72  c       psiP=max(0.,min(min(1.,psiP),(1.-cfl)/(1.D-20+cfl)*thetaP))          ELSE  
73          thetaM=Rjp/(1.D-20+Rj)           thetaP=(Rjm+smallNo)/(smallNo+Rj)
74  c       thetaM=0.           psiP=d0+d1*thetaP
75  c       IF (Rj.NE.0.) thetaM=Rjp/Rj          ENDIF
76          psiM=d0+d1*thetaM          IF ( ABS(Rj).LT.smallNo .OR.
77  c       psiM=max(0.,min(min(1.,psiM),(1.-cfl)/(1.D-20+cfl)*thetaM))       &       ABS(Rjp).LT.smallNo ) THEN
78             thetaM=0.
79             psiM=0.
80            ELSE
81             thetaM=(Rjp+smallNo)/(smallNo+Rj)
82             psiM=d0+d1*thetaM
83            ENDIF
84          vT(i,j)=          vT(i,j)=
85       &   0.5*(vTrans(i,j)+abs(vTrans(i,j)))       &   0.5*(vTrans(i,j)+abs(vTrans(i,j)))
86       &      *( Tracer(i,j-1) + psiP*Rj )       &      *( Tracer(i,j-1) + psiP*Rj )
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