/[MITgcm]/MITgcm/pkg/generic_advdiff/gad_dst3_adv_x.F
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Contents of /MITgcm/pkg/generic_advdiff/gad_dst3_adv_x.F

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Revision 1.3 - (show annotations) (download)
Wed Mar 6 01:29:36 2002 UTC (22 years, 2 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint46n_post, checkpoint51k_post, checkpoint47e_post, checkpoint52l_pre, hrcube4, hrcube5, checkpoint46l_post, checkpoint46g_pre, checkpoint47c_post, checkpoint50c_post, checkpoint46f_post, checkpoint52d_pre, checkpoint48e_post, checkpoint50c_pre, checkpoint46b_post, checkpoint52j_pre, checkpoint51o_pre, checkpoint54d_post, checkpoint54e_post, checkpoint51l_post, checkpoint48i_post, checkpoint46l_pre, checkpoint52l_post, checkpoint52k_post, checkpoint55, checkpoint54, checkpoint51, checkpoint50, checkpoint53, checkpoint52, checkpoint50d_post, checkpoint52f_post, checkpoint50b_pre, checkpoint54f_post, checkpoint51f_post, checkpoint48b_post, checkpoint51d_post, checkpoint48c_pre, checkpoint47d_pre, checkpoint51t_post, checkpoint51n_post, checkpoint52i_pre, hrcube_1, hrcube_2, hrcube_3, checkpoint51s_post, checkpoint47a_post, checkpoint55c_post, checkpoint48d_pre, checkpoint51j_post, checkpoint47i_post, checkpoint52e_pre, checkpoint52e_post, checkpoint51n_pre, checkpoint47d_post, checkpoint53d_post, checkpoint46d_pre, checkpoint48d_post, checkpoint48f_post, checkpoint45d_post, checkpoint52b_pre, checkpoint54b_post, checkpoint46j_pre, checkpoint51l_pre, checkpoint52m_post, checkpoint44h_pre, checkpoint48h_post, checkpoint51q_post, checkpoint51b_pre, checkpoint46a_post, checkpoint47g_post, checkpoint52b_post, checkpoint52c_post, checkpoint46j_post, checkpoint51h_pre, checkpoint46k_post, checkpoint48a_post, checkpoint45a_post, checkpoint50f_post, checkpoint50a_post, checkpoint50f_pre, checkpoint52f_pre, checkpoint47j_post, checkpoint54a_pre, checkpoint53c_post, branch-exfmods-tag, branchpoint-genmake2, checkpoint54a_post, checkpoint46e_pre, checkpoint51r_post, checkpoint48c_post, checkpoint45b_post, checkpoint46b_pre, checkpoint51i_post, checkpoint55b_post, checkpoint51b_post, checkpoint51c_post, checkpoint46c_pre, checkpoint53a_post, checkpoint46, checkpoint47b_post, checkpoint46h_pre, checkpoint52d_post, checkpoint53g_post, checkpoint46m_post, checkpoint46a_pre, checkpoint50g_post, checkpoint45c_post, checkpoint44h_post, checkpoint46g_post, checkpoint52a_pre, checkpoint50h_post, checkpoint52i_post, checkpoint50e_pre, checkpoint50i_post, checkpoint51i_pre, checkpoint52h_pre, checkpoint53f_post, checkpoint52j_post, checkpoint47f_post, checkpoint50e_post, checkpoint46i_post, checkpoint46c_post, branch-netcdf, checkpoint50d_pre, checkpoint52n_post, checkpoint53b_pre, checkpoint46e_post, checkpoint51e_post, checkpoint55a_post, checkpoint47, checkpoint45, checkpoint48, checkpoint49, checkpoint46h_post, checkpoint51o_post, checkpoint51f_pre, checkpoint48g_post, checkpoint53b_post, checkpoint47h_post, checkpoint52a_post, checkpoint51g_post, ecco_c52_e35, checkpoint46d_post, checkpoint50b_post, checkpoint51m_post, checkpoint53d_pre, checkpoint54c_post, checkpoint51a_post, checkpoint51p_post, checkpoint51u_post
Branch point for: branch-exfmods-curt, branch-genmake2, branch-nonh, tg2-branch, netcdf-sm0, checkpoint51n_branch
Changes since 1.2: +7 -2 lines 
re-compute velocity (uFld,vFld,wFld) from uTrans,vTrans,rTrans
1 C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/gad_dst3_adv_x.F,v 1.2 2001/09/10 00:14:05 adcroft Exp $
2 C $Name: $
3
4 #include "GAD_OPTIONS.h"
5
6 SUBROUTINE GAD_DST3_ADV_X(
7 I bi,bj,k,deltaT,
8 I uTrans, uVel,
9 I tracer,
10 O uT,
11 I myThid )
12 C /==========================================================\
13 C | SUBROUTINE GAD_DST3_ADV_X |
14 C | o Compute Zonal 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 uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
28 _RL uVel(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
29 _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
30 _RL uT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
31 INTEGER myThid
32
33 C == Local variables ==
34 C uFld :: velocity [m/s], zonal component
35 INTEGER i,j
36 _RL Rjm,Rj,Rjp,cfl,d0,d1
37 _RL psiP,psiM,thetaP,thetaM
38 _RL uFld
39
40 DO j=1-Oly,sNy+Oly
41 uT(1-Olx,j)=0.
42 uT(2-Olx,j)=0.
43 uT(sNx+Olx,j)=0.
44 DO i=1-Olx+2,sNx+Olx-1
45 Rjp=(tracer(i+1,j)-tracer(i,j))*maskW(i+1,j,k,bi,bj)
46 Rj =(tracer(i,j)-tracer(i-1,j))*maskW(i,j,k,bi,bj)
47 Rjm=(tracer(i-1,j)-tracer(i-2,j))*maskW(i-1,j,k,bi,bj)
48
49 c uFld = uVel(i,j,k,bi,bj)
50 uFld = uTrans(i,j)*recip_dyG(i,j,bi,bj)
51 & *recip_drF(k)*recip_hFacW(i,j,k,bi,bj)
52 cfl=abs(uFld*deltaT*recip_dxC(i,j,bi,bj))
53 d0=(2.-cfl)*(1.-cfl)*oneSixth
54 d1=(1.-cfl*cfl)*oneSixth
55 c thetaP=0.
56 c IF (Rj.NE.0.) thetaP=Rjm/Rj
57 thetaP=Rjm/(1.D-20+Rj)
58 psiP=d0+d1*thetaP
59 c psiP=max(0.,min(min(1.,psiP),(1.-cfl)/(1.D-20+cfl)*thetaP))
60 thetaM=Rjp/(1.D-20+Rj)
61 c thetaM=0.
62 c IF (Rj.NE.0.) thetaM=Rjp/Rj
63 psiM=d0+d1*thetaM
64 c psiM=max(0.,min(min(1.,psiM),(1.-cfl)/(1.D-20+cfl)*thetaM))
65 uT(i,j)=
66 & 0.5*(uTrans(i,j)+abs(uTrans(i,j)))
67 & *( Tracer(i-1,j) + psiP*Rj )
68 & +0.5*(uTrans(i,j)-abs(uTrans(i,j)))
69 & *( Tracer( i ,j) - psiM*Rj )
70
71 ENDDO
72 ENDDO
73
74 RETURN
75 END
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