3 |
|
|
4 |
#include "GAD_OPTIONS.h" |
#include "GAD_OPTIONS.h" |
5 |
|
|
6 |
SUBROUTINE GAD_FLUXLIMIT_ADV_Y( |
CBOP |
7 |
I bi,bj,k,deltaT, |
C !ROUTINE: GAD_FLUXLIMIT_ADV_Y |
8 |
I vTrans, vVel, |
|
9 |
I tracer, |
C !INTERFACE: ========================================================== |
10 |
|
SUBROUTINE GAD_FLUXLIMIT_ADV_Y( |
11 |
|
I bi,bj,k,deltaTloc, |
12 |
|
I vTrans, vFld, |
13 |
|
I maskLocS, tracer, |
14 |
O vT, |
O vT, |
15 |
I myThid ) |
I myThid ) |
|
C /==========================================================\ |
|
|
C | SUBROUTINE GAD_FLUXLIMIT_ADV_Y | |
|
|
C | o Compute Meridional advective Flux of Tracer using | |
|
|
C | Flux Limiter Scheme | |
|
|
C |==========================================================| |
|
|
IMPLICIT NONE |
|
16 |
|
|
17 |
C == GLobal variables == |
C !DESCRIPTION: |
18 |
|
C Calculates the area integrated meridional flux due to advection of a tracer |
19 |
|
C using second-order interpolation with a flux limiter: |
20 |
|
C \begin{equation*} |
21 |
|
C F^y_{adv} = V \overline{ \theta }^j |
22 |
|
C - \frac{1}{2} \left( |
23 |
|
C [ 1 - \psi(C_r) ] |V| |
24 |
|
C + V \frac{v \Delta t}{\Delta y_c} \psi(C_r) |
25 |
|
C \right) \delta_j \theta |
26 |
|
C \end{equation*} |
27 |
|
C where the $\psi(C_r)$ is the limiter function and $C_r$ is |
28 |
|
C the slope ratio. |
29 |
|
|
30 |
|
C !USES: =============================================================== |
31 |
|
IMPLICIT NONE |
32 |
#include "SIZE.h" |
#include "SIZE.h" |
33 |
#include "GRID.h" |
#include "GRID.h" |
34 |
|
|
35 |
C == Routine arguments == |
C !INPUT PARAMETERS: =================================================== |
36 |
|
C bi,bj :: tile indices |
37 |
|
C k :: vertical level |
38 |
|
C vTrans :: meridional volume transport |
39 |
|
C vFld :: meridional flow |
40 |
|
C tracer :: tracer field |
41 |
|
C myThid :: thread number |
42 |
INTEGER bi,bj,k |
INTEGER bi,bj,k |
43 |
_RL deltaT |
_RL deltaTloc |
44 |
_RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
45 |
_RL vVel (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
_RL vFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
46 |
|
_RS maskLocS(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
47 |
_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
|
_RL vT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
|
48 |
INTEGER myThid |
INTEGER myThid |
49 |
|
|
50 |
C == Local variables == |
C !OUTPUT PARAMETERS: ================================================== |
51 |
|
C vT :: meridional advective flux |
52 |
|
_RL vT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
53 |
|
|
54 |
|
C !LOCAL VARIABLES: ==================================================== |
55 |
|
C i,j :: loop indices |
56 |
|
C Cr :: slope ratio |
57 |
|
C Rjm,Rj,Rjp :: differences at j-1,j,j+1 |
58 |
|
C vLoc :: velocity [m/s], meridional component |
59 |
INTEGER i,j |
INTEGER i,j |
60 |
_RL Cr,Rjm,Rj,Rjp |
_RL Cr,Rjm,Rj,Rjp |
61 |
|
_RL vLoc, vCFL |
62 |
|
C Statement function provides Limiter(Cr) |
63 |
#include "GAD_FLUX_LIMITER.h" |
#include "GAD_FLUX_LIMITER.h" |
64 |
|
CEOP |
65 |
|
|
66 |
DO i=1-Olx,sNx+Olx |
DO i=1-Olx,sNx+Olx |
67 |
vT(i,1-Oly)=0. |
vT(i,1-Oly)=0. |
70 |
ENDDO |
ENDDO |
71 |
DO j=1-Oly+2,sNy+Oly-1 |
DO j=1-Oly+2,sNy+Oly-1 |
72 |
DO i=1-Olx,sNx+Olx |
DO i=1-Olx,sNx+Olx |
73 |
Rjp=(tracer(i,j+1)-tracer(i,j))*maskS(i,j+1,k,bi,bj) |
|
74 |
Rj=(tracer(i,j)-tracer(i,j-1))*maskS(i,j,k,bi,bj) |
vLoc = vFld(i,j) |
75 |
Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskS(i,j-1,k,bi,bj) |
vCFL = ABS( vLoc*deltaTloc |
76 |
|
& *recip_dyC(i,j,bi,bj)*recip_deepFacC(k) ) |
77 |
|
Rjp=(tracer(i,j+1)-tracer(i, j ))*maskLocS(i,j+1) |
78 |
|
Rj =(tracer(i, j )-tracer(i,j-1))*maskLocS(i, j ) |
79 |
|
Rjm=(tracer(i,j-1)-tracer(i,j-2))*maskLocS(i,j-1) |
80 |
|
|
81 |
IF (Rj.NE.0.) THEN |
IF (Rj.NE.0.) THEN |
82 |
IF (vTrans(i,j).GT.0) THEN |
IF (vTrans(i,j).GT.0) THEN |
83 |
Cr=Rjm/Rj |
Cr=Rjm/Rj |
92 |
ENDIF |
ENDIF |
93 |
ENDIF |
ENDIF |
94 |
Cr=Limiter(Cr) |
Cr=Limiter(Cr) |
95 |
vT(i,j) = |
vT(i,j) = |
96 |
& vTrans(i,j)*(Tracer(i,j)+Tracer(i,j-1))*0.5 _d 0 |
& vTrans(i,j)*(Tracer(i,j)+Tracer(i,j-1))*0.5 _d 0 |
97 |
& -0.5*( |
& -ABS(vTrans(i,j))*((1.-Cr)+vCFL*Cr) |
98 |
& (1-Cr)*ABS(vTrans(i,j)) |
& *Rj*0.5 _d 0 |
|
& +vTrans(i,j)*vVel(i,j,k,bi,bj)*deltaT |
|
|
& *recip_dyC(i,j,bi,bj)*Cr |
|
|
& )*Rj |
|
99 |
ENDDO |
ENDDO |
100 |
ENDDO |
ENDDO |
101 |
|
|