pkg/generic_advdiff/gad_fluxlimit_adv_y.F

C $Header: $
C $Name: $

#include "GAD_OPTIONS.h"

      SUBROUTINE GAD_FLUXLIMIT_ADV_Y( 
     I           bi,bj,k,deltaT,
     I           vTrans, vVel,
     I           tracer,
     O           vT,
     I           myThid )
      IMPLICIT NONE

C     == GLobal variables ==
#include "SIZE.h"
#include "GRID.h"

C     == Routine arguments ==
      INTEGER bi,bj,k
      _RL deltaT
      _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL vVel  (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
      _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL vT    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      INTEGER myThid

C     == Local variables ==
      INTEGER i,j
      _RL Cr,Rjm,Rj,Rjp
#include "GAD_FLUX_LIMITER.h"

      DO i=1-Olx,sNx+Olx
       vT(i,1-Oly)=0.
      ENDDO
      DO j=1-Oly+1,sNy+Oly
       DO i=1-Olx,sNx+Olx
        Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)
        Rj=(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)
        Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)
        IF (Rj.NE.0.) THEN
         IF (vTrans(i,j).GT.0) THEN
           Cr=Rjm/Rj
         ELSE
           Cr=Rjp/Rj
         ENDIF
        ELSE
         IF (vTrans(i,j).GT.0) THEN
           Cr=Rjm*1.E20
         ELSE
           Cr=Rjp*1.E20
         ENDIF
        ENDIF
        Cr=Limiter(Cr)
        vT(i,j) = 
     &   vTrans(i,j)*(Tracer(i,j)+Tracer(i,j-1))*0.5 _d 0
     &   -0.5*(
     &        (1-Cr)*ABS(vTrans(i,j))
     &        +vTrans(i,j)*vVel(i,j,k,bi,bj)*deltaT
     &         *recip_dyC(i,j,bi,bj)*Cr
     &        )*Rj
       ENDDO
      ENDDO

      RETURN
      END
1	adcroft	1.1	C $Header: $
2			C $Name: $
3
4			#include "GAD_OPTIONS.h"
5
6			SUBROUTINE GAD_FLUXLIMIT_ADV_Y(
7			I bi,bj,k,deltaT,
8			I vTrans, vVel,
9			I tracer,
10			O vT,
11			I myThid )
12			IMPLICIT NONE
13
14			C == GLobal variables ==
15			#include "SIZE.h"
16			#include "GRID.h"
17
18			C == Routine arguments ==
19			INTEGER bi,bj,k
20			_RL deltaT
21			_RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
22			_RL vVel (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
23			_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
24			_RL vT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
25			INTEGER myThid
26
27			C == Local variables ==
28			INTEGER i,j
29			_RL Cr,Rjm,Rj,Rjp
30			#include "GAD_FLUX_LIMITER.h"
31
32			DO i=1-Olx,sNx+Olx
33			vT(i,1-Oly)=0.
34			ENDDO
35			DO j=1-Oly+1,sNy+Oly
36			DO i=1-Olx,sNx+Olx
37			Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)
38			Rj=(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)
39			Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)
40			IF (Rj.NE.0.) THEN
41			IF (vTrans(i,j).GT.0) THEN
42			Cr=Rjm/Rj
43			ELSE
44			Cr=Rjp/Rj
45			ENDIF
46			ELSE
47			IF (vTrans(i,j).GT.0) THEN
48			Cr=Rjm*1.E20
49			ELSE
50			Cr=Rjp*1.E20
51			ENDIF
52			ENDIF
53			Cr=Limiter(Cr)
54			vT(i,j) =
55			& vTrans(i,j)(Tracer(i,j)+Tracer(i,j-1))0.5 _d 0
56			& -0.5*(
57			& (1-Cr)*ABS(vTrans(i,j))
58			& +vTrans(i,j)vVel(i,j,k,bi,bj)deltaT
59			& recip_dyC(i,j,bi,bj)Cr
60			& )*Rj
61			ENDDO
62			ENDDO
63
64			RETURN
65			END