/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_dst3fl_adv_y.F
ViewVC logotype

Annotation of /MITgcm/pkg/generic_advdiff/gad_dst3fl_adv_y.F

Parent Directory Parent Directory | Revision Log Revision Log | View Revision Graph Revision Graph


Revision 1.2 - (hide annotations) (download)
Wed Sep 5 17:46:03 2001 UTC (22 years, 9 months ago) by heimbach
Branch: MAIN
Changes since 1.1: +8 -6 lines
Continued lines must not be interrupted by comment lines.
Such contstructs cannot be handled by the
(at best) semi-automatic compiler TAMC.
Example:

       subroutine fran(
c this is the input
     I     goin,
c this is the output
     O     goout
     &     )

cannot be handled by TAMC.

1 heimbach 1.2 C $Header: /u/gcmpack/models/MITgcmUV/pkg/generic_advdiff/gad_dst3fl_adv_y.F,v 1.1 2001/09/04 14:53:11 adcroft Exp $
2     C $Name: $
3 adcroft 1.1
4     #include "GAD_OPTIONS.h"
5    
6     SUBROUTINE GAD_DST3FL_ADV_Y(
7     I bi,bj,k,deltaT,
8     I vTrans, vVel,
9     I tracer,
10     O vT,
11     I myThid )
12     C /==========================================================\
13     C | SUBROUTINE GAD_DST3FL_ADV_Y |
14     C | o Compute Meridional advective Flux of Tracer using |
15     C | 3rd Order DST Sceheme with flux limiting |
16     C |==========================================================|
17     IMPLICIT NONE
18    
19     C == GLobal variables ==
20     #include "SIZE.h"
21     #include "GRID.h"
22     #include "GAD.h"
23    
24     C == Routine arguments ==
25     INTEGER bi,bj,k
26     _RL deltaT
27     _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
28     _RL vVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
29     _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
30     _RL vT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
31     INTEGER myThid
32    
33     C == Local variables ==
34     INTEGER i,j
35     _RL Rjm,Rj,Rjp,cfl,d0,d1,psiP,thetaP,psiM,thetaM
36    
37     DO i=1-Olx,sNx+Olx
38     vT(i,1-Olx)=0.
39     vT(i,2-Olx)=0.
40     vT(i,sNx+Olx)=0.
41     ENDDO
42     DO j=1-Oly+2,sNy+Oly-1
43     DO i=1-Olx,sNx+Olx
44     Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)
45     Rj =(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)
46     Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)
47    
48     cfl=vVel(i,j,k,bi,bj)*deltaT*recip_dyc(i,j,bi,bj)
49     d0=(2.-abs(cfl))*(1.-abs(cfl))*oneSixth
50     d1=(1.-cfl)*(1.+cfl)*oneSixth
51     thetaP=Rjm/(1.D-30+Rj)
52     psiP=d0+d1*thetaP
53     psiP=max(0., min(min(1.,psiP),(1.-cfl)/cfl*thetaP) )
54     thetaM=Rjp/(-1.D-30+Rj)
55     psiM=d0+d1*thetaM
56     psiM=max(0., min(min(1.,psiM),(1.-cfl)/cfl*thetaM) )
57     vT(i,j)=
58 heimbach 1.2 & 0.5*(vTrans(i,j)+abs(vTrans(i,j)))
59     & *( Tracer(i,j-1) + psiP*Rj )
60     & +0.5*(vTrans(i,j)-abs(vTrans(i,j)))
61     & *( Tracer(i, j ) - psiM*Rj )
62     cph *note* put these comments after end of continued line
63     cph to ensure TAMC compatibility
64 adcroft 1.1 c & 0.5*(vTrans(i,j)+abs(vTrans(i,j)))
65     c & *( Tracer(i,j-1) + d0*Rj + d1*Rjm )
66     c & +0.5*(vTrans(i,j)-abs(vTrans(i,j)))
67     c & *( Tracer(i, j ) - d0*Rj + d1*Rjp )
68    
69     ENDDO
70     ENDDO
71    
72     RETURN
73     END

  ViewVC Help
Powered by ViewVC 1.1.22