1 |
C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_del2v.F,v 1.8 2011/04/25 22:46:41 jmc Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "MOM_FLUXFORM_OPTIONS.h" |
5 |
|
6 |
CBOP |
7 |
C !ROUTINE: MOM_V_DEL2V |
8 |
|
9 |
C !INTERFACE: ========================================================== |
10 |
SUBROUTINE MOM_V_DEL2V( |
11 |
I bi,bj,k, |
12 |
I vFld, hFacZ, |
13 |
O del2v, |
14 |
I myThid) |
15 |
|
16 |
C !DESCRIPTION: |
17 |
C Calculates the Laplacian of meridional flow |
18 |
|
19 |
C !USES: =============================================================== |
20 |
IMPLICIT NONE |
21 |
#include "SIZE.h" |
22 |
#include "EEPARAMS.h" |
23 |
#include "PARAMS.h" |
24 |
#include "GRID.h" |
25 |
#include "SURFACE.h" |
26 |
|
27 |
C !INPUT PARAMETERS: =================================================== |
28 |
C bi,bj :: tile indices |
29 |
C k :: vertical level |
30 |
C vFld :: meridional flow |
31 |
C hFacZ :: fractional thickness at vorticity points |
32 |
C myThid :: thread number` |
33 |
INTEGER bi,bj,k |
34 |
_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
35 |
_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
36 |
INTEGER myThid |
37 |
C !OUTPUT PARAMETERS: ================================================== |
38 |
C del2v :: Laplacian |
39 |
_RL del2v(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
40 |
|
41 |
C !LOCAL VARIABLES: ==================================================== |
42 |
C i,j :: loop indices |
43 |
INTEGER I,J |
44 |
_RL fZon(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
45 |
_RL fMer(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
46 |
_RS hFacZClosedE,hFacZClosedW |
47 |
CEOP |
48 |
|
49 |
C Zonal flux d/dx V |
50 |
DO j=1-Oly+1,sNy+Oly-1 |
51 |
DO i=1-Olx+1,sNx+Olx |
52 |
fZon(i,j) = drF(k)*hFacZ(i,j) |
53 |
& *_dyU(i,j,bi,bj) |
54 |
& *_recip_dxV(i,j,bi,bj) |
55 |
& *(vFld(i,j)-vFld(i-1,j)) |
56 |
#ifdef COSINEMETH_III |
57 |
& *sqCosFacV(J,bi,bj) |
58 |
#endif |
59 |
c & *deepFacC(k) ! dyU scaling factor |
60 |
c & *recip_deepFacC(k) ! recip_dxV scaling factor |
61 |
ENDDO |
62 |
ENDDO |
63 |
|
64 |
C Meridional flux d/dy V |
65 |
DO j=1-Oly,sNy+Oly-1 |
66 |
DO i=1-Olx+1,sNx+Olx-1 |
67 |
fMer(i,j) = drF(k)*_hFacC(i,j,k,bi,bj) |
68 |
& *_dxF(i,j,bi,bj) |
69 |
& *_recip_dyF(i,j,bi,bj) |
70 |
& *(vFld(i,j+1)-vFld(i,j)) |
71 |
#if (defined (ISOTROPIC_COS_SCALING) && defined (COSINEMETH_III)) |
72 |
& *sqCosFacU(J,bi,bj) |
73 |
#endif |
74 |
#ifdef ALLOW_OBCS |
75 |
& *maskInC(i,j,bi,bj) |
76 |
#endif |
77 |
c & *deepFacC(k) ! dxF scaling factor |
78 |
c & *recip_deepFacC(k) ! recip_dyF scaling factor |
79 |
ENDDO |
80 |
ENDDO |
81 |
|
82 |
C del^2 V |
83 |
DO j=1-Oly+1,sNy+Oly-1 |
84 |
DO i=1-Olx+1,sNx+Olx-1 |
85 |
del2v(i,j) = |
86 |
& recip_drF(k)*_recip_hFacS(i,j,k,bi,bj) |
87 |
& *recip_rAs(i,j,bi,bj)*recip_deepFac2C(k) |
88 |
& *( fZon(i+1,j) - fZon(i, j ) |
89 |
& +fMer( i ,j) - fMer(i,j-1) |
90 |
& )*_maskS(i,j,k,bi,bj) |
91 |
#ifdef ALLOW_OBCS |
92 |
& *maskInS(i,j,bi,bj) |
93 |
#endif |
94 |
ENDDO |
95 |
ENDDO |
96 |
|
97 |
IF (no_slip_sides) THEN |
98 |
C-- No-slip BCs impose a drag at walls... |
99 |
DO j=1-Oly+1,sNy+Oly-1 |
100 |
DO i=1-Olx+1,sNx+Olx-1 |
101 |
#ifdef NONLIN_FRSURF |
102 |
C- this will not give any side-drag along thin wall. |
103 |
C (but this might just be what we want ...) |
104 |
hFacZClosedW = h0FacS(i,j,k,bi,bj) - h0FacS(i-1,j,k,bi,bj) |
105 |
hFacZClosedE = h0FacS(i,j,k,bi,bj) - h0FacS(i+1,j,k,bi,bj) |
106 |
hFacZClosedW = MAX( 0. _d 0, hFacZClosedW ) |
107 |
hFacZClosedE = MAX( 0. _d 0, hFacZClosedE ) |
108 |
#else |
109 |
hFacZClosedW = _hFacS(i,j,k,bi,bj) - hFacZ(i,j) |
110 |
hFacZClosedE = _hFacS(i,j,k,bi,bj) - hFacZ(i+1,j) |
111 |
#endif |
112 |
del2v(i,j) = del2v(i,j) |
113 |
& -_recip_hFacS(i,j,k,bi,bj) |
114 |
& *recip_rAs(i,j,bi,bj)*recip_deepFac2C(k) |
115 |
& *( hFacZClosedW*dyU( i ,j,bi,bj) |
116 |
& *_recip_dxV( i ,j,bi,bj) |
117 |
& +hFacZClosedE*dyU(i+1,j,bi,bj) |
118 |
& *_recip_dxV(i+1,j,bi,bj) |
119 |
& )*vFld(i,j)*sideDragFactor |
120 |
& *_maskS(i,j,k,bi,bj) |
121 |
ENDDO |
122 |
ENDDO |
123 |
ENDIF |
124 |
|
125 |
RETURN |
126 |
END |