/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_dst3_adv_y.F
ViewVC logotype

Contents of /MITgcm/pkg/generic_advdiff/gad_dst3_adv_y.F

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

Revision 1.2 - (show annotations) (download)
Mon Sep 10 00:14:05 2001 UTC (22 years, 8 months ago) by adcroft
Branch: MAIN
CVS Tags: checkpoint44e_post, release1_p13_pre, checkpoint44f_post, checkpoint43a-release1mods, release1_p13, checkpoint40pre9, chkpt44d_post, release1_p8, release1_p9, release1_p1, release1_p2, release1_p3, release1_p4, release1_p5, release1_p6, release1_p7, checkpoint44e_pre, release1_b1, checkpoint43, release1_chkpt44d_post, release1_p11, icebear5, icebear4, icebear3, icebear2, release1-branch_tutorials, chkpt44a_post, chkpt44c_pre, ecco_c44_e19, ecco_c44_e18, ecco_c44_e17, ecco_c44_e16, release1_p12, release1_p10, release1_p16, release1_p17, release1_p14, release1_p15, checkpoint44g_post, release1-branch-end, release1_final_v1, checkpoint44b_post, ecco_ice2, ecco_ice1, release1_p12_pre, ecco_c44_e22, ecco_c44_e25, chkpt44a_pre, ecco_c44_e23, ecco_c44_e20, ecco_c44_e21, ecco_c44_e26, ecco_c44_e27, ecco_c44_e24, ecco-branch-mod1, ecco-branch-mod2, ecco-branch-mod3, ecco-branch-mod4, ecco-branch-mod5, release1_beta1, checkpoint44b_pre, checkpoint42, checkpoint40, checkpoint41, checkpoint44, chkpt44c_post, checkpoint44f_pre, release1-branch_branchpoint
Branch point for: c24_e25_ice, release1_final, release1-branch, release1, ecco-branch, release1_50yr, icebear, release1_coupled
Changes since 1.1: +16 -5 lines 
Slight re-write to help debug flux limited form.
1 C $Header: $
2 C $Name: $
3
4 #include "GAD_OPTIONS.h"
5
6 SUBROUTINE GAD_DST3_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_DST3_ADV_Y |
14 C | o Compute Meridional 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 "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
36 _RL psiP,psiM,thetaP,thetaM
37
38 DO i=1-Olx,sNx+Olx
39 vT(i,1-Oly)=0.
40 vT(i,2-Oly)=0.
41 vT(i,sNy+Oly)=0.
42 ENDDO
43 DO j=1-Oly+2,sNy+Oly-1
44 DO i=1-Olx,sNx+Olx
45 Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj)
46 Rj =(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj)
47 Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj)
48
49 cfl=abs(vVel(i,j,k,bi,bj)*deltaT*recip_dyc(i,j,bi,bj))
50 d0=(2.-cfl)*(1.-cfl)*oneSixth
51 d1=(1.-cfl*cfl)*oneSixth
52 c thetaP=0.
53 c IF (Rj.NE.0.) thetaP=Rjm/Rj
54 thetaP=Rjm/(1.D-20+Rj)
55 psiP=d0+d1*thetaP
56 c psiP=max(0.,min(min(1.,psiP),(1.-cfl)/(1.D-20+cfl)*thetaP))
57 thetaM=Rjp/(1.D-20+Rj)
58 c thetaM=0.
59 c IF (Rj.NE.0.) thetaM=Rjp/Rj
60 psiM=d0+d1*thetaM
61 c psiM=max(0.,min(min(1.,psiM),(1.-cfl)/(1.D-20+cfl)*thetaM))
62 vT(i,j)=
63 & 0.5*(vTrans(i,j)+abs(vTrans(i,j)))
64 & *( Tracer(i,j-1) + psiP*Rj )
65 & +0.5*(vTrans(i,j)-abs(vTrans(i,j)))
66 & *( Tracer(i, j ) - psiM*Rj )
67
68 ENDDO
69 ENDDO
70
71 RETURN
72 END
  ViewVC Help
Powered by ViewVC 1.1.22