natl_12/code/mom_v_xviscflux.F

C $Header: /u/u0/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_xviscflux.F,v 1.3 2001/09/26 19:05:21 adcroft Exp $
C $Name:  $

#include "CPP_OPTIONS.h"

CBOP
C !ROUTINE: MOM_V_XVISCFLUX

C !INTERFACE: ==========================================================
      SUBROUTINE MOM_V_XVISCFLUX(
     I        bi,bj,k,
     I        vFld, del2v, hFacZ,
     O        xViscFluxV,
     I        myThid)

C !DESCRIPTION:
C Calculates the area integrated zonal viscous fluxes of V:
C \begin{equation*}
C F^x = - \frac{ \Delta x_u \Delta r_f h_z }{\Delta x_v}
C  ( A_h \delta_i v - A_4 \delta_i \nabla^2 v )
C \end{equation*}

C !USES: ===============================================================
      IMPLICIT NONE
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"

C !INPUT PARAMETERS: ===================================================
C  bi,bj                :: tile indices
C  k                    :: vertical level
C  vFld                 :: meridional flow
C  del2v                :: Laplacian of meridional flow
C  myThid               :: thread number
      INTEGER bi,bj,k
      _RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL del2v(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      INTEGER myThid

C !OUTPUT PARAMETERS: ==================================================
C  xViscFluxU           :: viscous fluxes
      _RL xViscFluxV(1-OLx:sNx+OLx,1-OLy:sNy+OLy)

C !LOCAL VARIABLES: ====================================================
C  i,j                  :: loop indices
      INTEGER I,J
      _RS     gridScalingA4
CEOP

C     - Laplacian  and bi-harmonic terms
      DO j=1-Oly,sNy+Oly
       DO i=1-Olx+1,sNx+Olx
        gridScalingA4 = (_dxV(i,j,bi,bj)**4)/(5000.**4)
        xViscFluxV(i,j) =
     &     _dyU(i,j,bi,bj)*drF(k)*hFacZ(i,j)
     &     *(
     &       -viscAh*(vFld(i,j)-vFld(i-1,j))
     &       *cosFacV(J,bi,bj)
     &       +viscA4*(del2v(i,j)       -del2v(i-1,j)       )
     &              *gridScalingA4
#ifdef COSINEMETH_III
     &      *sqcosFacV(J,bi,bj)
#else
     &      *cosFacV(J,bi,bj)
#endif
     &      )*_recip_dxV(i,j,bi,bj)
       ENDDO
      ENDDO

      RETURN
      END
1	C $Header: /u/u0/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_xviscflux.F,v 1.3 2001/09/26 19:05:21 adcroft Exp $
2	C $Name: $
3
4	#include "CPP_OPTIONS.h"
5
6	CBOP
7	C !ROUTINE: MOM_V_XVISCFLUX
8
9	C !INTERFACE: ==========================================================
10	SUBROUTINE MOM_V_XVISCFLUX(
11	I bi,bj,k,
12	I vFld, del2v, hFacZ,
13	O xViscFluxV,
14	I myThid)
15
16	C !DESCRIPTION:
17	C Calculates the area integrated zonal viscous fluxes of V:
18	C \begin{equation*}
19	C F^x = - \frac{ \Delta x_u \Delta r_f h_z }{\Delta x_v}
20	C ( A_h \delta_i v - A_4 \delta_i \nabla^2 v )
21	C \end{equation*}
22
23	C !USES: ===============================================================
24	IMPLICIT NONE
25	#include "SIZE.h"
26	#include "EEPARAMS.h"
27	#include "PARAMS.h"
28	#include "GRID.h"
29
30	C !INPUT PARAMETERS: ===================================================
31	C bi,bj :: tile indices
32	C k :: vertical level
33	C vFld :: meridional flow
34	C del2v :: Laplacian of meridional flow
35	C myThid :: thread number
36	INTEGER bi,bj,k
37	_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
38	_RL del2v(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
39	_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
40	INTEGER myThid
41
42	C !OUTPUT PARAMETERS: ==================================================
43	C xViscFluxU :: viscous fluxes
44	_RL xViscFluxV(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
45
46	C !LOCAL VARIABLES: ====================================================
47	C i,j :: loop indices
48	INTEGER I,J
49	_RS gridScalingA4
50	CEOP
51
52	C - Laplacian and bi-harmonic terms
53	DO j=1-Oly,sNy+Oly
54	DO i=1-Olx+1,sNx+Olx
55	gridScalingA4 = (_dxV(i,j,bi,bj)4)/(5000.4)
56	xViscFluxV(i,j) =
57	& _dyU(i,j,bi,bj)drF(k)hFacZ(i,j)
58	& *(
59	& -viscAh*(vFld(i,j)-vFld(i-1,j))
60	& *cosFacV(J,bi,bj)
61	& +viscA4*(del2v(i,j) -del2v(i-1,j) )
62	& *gridScalingA4
63	#ifdef COSINEMETH_III
64	& *sqcosFacV(J,bi,bj)
65	#else
66	& *cosFacV(J,bi,bj)
67	#endif
68	& )*_recip_dxV(i,j,bi,bj)
69	ENDDO
70	ENDDO
71
72	RETURN
73	END