| 1 |
heimbach |
1.1.6.2 |
C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/gad_dst3_adv_r.F,v 1.3 2002/03/06 01:29:36 jmc Exp $ |
| 2 |
heimbach |
1.1.6.1 |
C $Name: $ |
| 3 |
adcroft |
1.1 |
|
| 4 |
|
|
#include "GAD_OPTIONS.h" |
| 5 |
|
|
|
| 6 |
|
|
SUBROUTINE GAD_DST3_ADV_R( |
| 7 |
|
|
I bi_arg,bj_arg,k,dTarg, |
| 8 |
|
|
I rTrans, wVel, |
| 9 |
|
|
I tracer, |
| 10 |
|
|
O wT, |
| 11 |
|
|
I myThid ) |
| 12 |
|
|
C /==========================================================\ |
| 13 |
|
|
C | SUBROUTINE GAD_DST3_ADV_R | |
| 14 |
|
|
C | o Compute Vertical advective Flux of Tracer using | |
| 15 |
|
|
C | 3rd Order DST Sceheme | |
| 16 |
|
|
C |==========================================================| |
| 17 |
|
|
IMPLICIT NONE |
| 18 |
|
|
|
| 19 |
|
|
C == GLobal variables == |
| 20 |
|
|
#include "SIZE.h" |
| 21 |
|
|
#include "GRID.h" |
| 22 |
|
|
#include "EEPARAMS.h" |
| 23 |
|
|
#include "PARAMS.h" |
| 24 |
|
|
#include "GAD.h" |
| 25 |
|
|
|
| 26 |
|
|
C == Routine arguments == |
| 27 |
|
|
INTEGER bi_arg,bj_arg,k |
| 28 |
|
|
_RL dTarg |
| 29 |
|
|
_RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 30 |
|
|
_RL wVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
| 31 |
|
|
_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
| 32 |
|
|
_RL wT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 33 |
|
|
INTEGER myThid |
| 34 |
|
|
|
| 35 |
|
|
C == Local variables == |
| 36 |
heimbach |
1.1.6.2 |
C wFld :: velocity, vertical component |
| 37 |
adcroft |
1.1 |
INTEGER i,j,kp1,km1,km2,bi,bj |
| 38 |
|
|
_RL Rjm,Rj,Rjp,cfl,d0,d1 |
| 39 |
|
|
_RL psiP,psiM,thetaP,thetaM |
| 40 |
heimbach |
1.1.6.2 |
_RL wFld |
| 41 |
adcroft |
1.1 |
|
| 42 |
|
|
IF (.NOT. multiDimAdvection) THEN |
| 43 |
|
|
C If using the standard time-stepping/advection schemes (ie. AB-II) |
| 44 |
|
|
C then the data-structures are all global arrays |
| 45 |
|
|
bi=bi_arg |
| 46 |
|
|
bj=bj_arg |
| 47 |
|
|
ELSE |
| 48 |
|
|
C otherwise if using the multi-dimensional advection schemes |
| 49 |
|
|
C then the data-structures are all local arrays except |
| 50 |
|
|
C for maskC(...) and wVel(...) |
| 51 |
|
|
bi=1 |
| 52 |
|
|
bj=1 |
| 53 |
|
|
ENDIF |
| 54 |
|
|
|
| 55 |
|
|
km2=MAX(1,k-2) |
| 56 |
|
|
km1=MAX(1,k-1) |
| 57 |
|
|
kp1=MIN(Nr,k+1) |
| 58 |
|
|
|
| 59 |
|
|
DO j=1-Oly,sNy+Oly |
| 60 |
|
|
DO i=1-Olx,sNx+Olx |
| 61 |
|
|
Rjp=(tracer(i,j,k,bi,bj)-tracer(i,j,kp1,bi,bj)) |
| 62 |
heimbach |
1.1.6.1 |
& *maskC(i,j,kp1,bi_arg,bj_arg) |
| 63 |
adcroft |
1.1 |
Rj =(tracer(i,j,km1,bi,bj)-tracer(i,j,k,bi,bj)) |
| 64 |
heimbach |
1.1.6.1 |
& *maskC(i,j,k,bi_arg,bj_arg)*maskC(i,j,km1,bi_arg,bj_arg) |
| 65 |
adcroft |
1.1 |
Rjm=(tracer(i,j,km2,bi,bj)-tracer(i,j,km1,bi,bj)) |
| 66 |
heimbach |
1.1.6.1 |
& *maskC(i,j,km1,bi_arg,bj_arg) |
| 67 |
adcroft |
1.1 |
|
| 68 |
heimbach |
1.1.6.2 |
c wFld = wVel(i,j,k,bi_arg,bj_arg) |
| 69 |
|
|
wFld = rTrans(i,j)*recip_rA(i,j,bi_arg,bj_arg) |
| 70 |
|
|
cfl=abs(wFld*dTarg*recip_drC(k)) |
| 71 |
adcroft |
1.1 |
d0=(2.-cfl)*(1.-cfl)*oneSixth |
| 72 |
|
|
d1=(1.-cfl*cfl)*oneSixth |
| 73 |
|
|
c thetaP=0. |
| 74 |
|
|
c IF (Rj.NE.0.) thetaP=Rjm/Rj |
| 75 |
|
|
thetaP=Rjm/(1.D-20+Rj) |
| 76 |
|
|
psiP=d0+d1*thetaP |
| 77 |
|
|
c psiP=max(0.,min(min(1.,psiP),(1.-cfl)/(1.D-20+cfl)*thetaP)) |
| 78 |
|
|
thetaM=Rjp/(1.D-20+Rj) |
| 79 |
|
|
c thetaM=0. |
| 80 |
|
|
c IF (Rj.NE.0.) thetaM=Rjp/Rj |
| 81 |
|
|
psiM=d0+d1*thetaM |
| 82 |
|
|
c psiM=max(0.,min(min(1.,psiM),(1.-cfl)/(1.D-20+cfl)*thetaM)) |
| 83 |
|
|
wT(i,j)= |
| 84 |
|
|
& 0.5*(rTrans(i,j)+abs(rTrans(i,j))) |
| 85 |
|
|
& *( Tracer(i,j, k ,bi,bj) + psiM*Rj ) |
| 86 |
|
|
& +0.5*(rTrans(i,j)-abs(rTrans(i,j))) |
| 87 |
|
|
& *( Tracer(i,j,km1,bi,bj) - psiP*Rj ) |
| 88 |
|
|
|
| 89 |
|
|
ENDDO |
| 90 |
|
|
ENDDO |
| 91 |
|
|
|
| 92 |
|
|
RETURN |
| 93 |
|
|
END |
Parent Directory
| 
Revision Log
| 
Revision Graph