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	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