#include "cppdefs.h"
MODULE kwc3dbc_mod
#ifdef SOLVE3D
!
!svn $Id: kwc3dbc_im.F 732 2008-09-07 01:55:51Z jcwarner $
!================================================== John C. Warner =====
! !
! !
! This subroutine sets lateral boundary conditions for the !
! wave number kwc field. !
! !
!=======================================================================
!
implicit none
PRIVATE
PUBLIC :: kwc3dbc_tile
CONTAINS
!
!***********************************************************************
SUBROUTINE kwc3dbc_tile (ng, tile, &
& LBi, UBi, LBj, UBj, &
& kwc)
!***********************************************************************
!
USE mod_param
USE mod_boundary
USE mod_grid
USE mod_scalars
USE mod_inwave_params
USE mod_inwave_swan
USE mod_inwave_vars
# ifdef REFINED_GRID
USE mod_stepping
# endif
!
! Imported variable declarations.
!
integer, intent(in) :: ng, tile
integer, intent(in) :: LBi, UBi, LBj, UBj
!
# ifdef ASSUMED_SHAPE
real(r8), intent(inout) :: kwc(LBi:,LBj:,:)
# else
real(r8), intent(inout) :: kwc(LBi:UBi,LBj:UBj,ND)
# endif
!
! Local variable declarations.
!
integer :: i, j, d
real(r8) :: twopi, otwopi
real(r8) :: error, Tr_min
real(r8) :: L0, k0, k1, kh, wr
real(r8) :: F, FDER, tanhkh
real(r8) :: cff, cff1, cff2
real(r8), parameter :: maxErr = 0.1_r8
real(r8), parameter :: kwc_max = 10.0_r8
real(r8), parameter :: kwc_min = 0.015_r8
# include "set_bounds.h"
twopi=2.0_r8*pi
otwopi=1.0_r8/twopi
Tr_min=1.0_r8
!-----------------------------------------------------------------------
! Lateral boundary conditions at the western edge.
!-----------------------------------------------------------------------
!
IF (.not.EWperiodic(ng)) THEN
IF (DOMAIN(ng)%Western_Edge(tile)) THEN
IF (LBC(iwest,isAC3d,ng)%acquire) THEN
DO d=1,ND
DO j=Jstr,Jend
L0=g*otwopi*MAX(Tr_min,WAVEP(ng)%Tr(Istr-1,j,d))**2.0_r8
k0=twopi/L0
error=100.0_r8
wr=twopi/MAX(Tr_min,WAVEP(ng)%Tr(Istr-1,j,d))
DO WHILE(error.gt.maxErr)
kh=k0*WAVEP(ng)%h_tot(Istr-1,j)
tanhkh=TANH(kh)
cff1=wr**2.0_r8
cff2=-g*k0*tanhkh
F=cff1+cff2
cff1=-g*tanhkh
cff2=-g*kh/COSH(kh)**2.0_r8
FDER=cff1+cff2
k1=k0-F/FDER
error=100.0_r8*ABS((k1-k0)/k0)
k0=k1
END DO
kwc(Istr-1,j,d)=MAX(kwc_min,MIN(k0,kwc_max))
# ifdef MASKING
kwc(Istr-1,j,d)=kwc(Istr-1,j,d)* &
& GRID(ng)%rmask(Istr-1,j)
# endif
END DO
END DO
ELSE
DO d=1,ND
DO j=Jstr,Jend
kwc(Istr-1,j,d)=kwc(Istr,j,d)
# ifdef MASKING
kwc(Istr-1,j,d)=kwc(Istr-1,j,d)* &
& GRID(ng)%rmask(Istr-1,j)
# endif
END DO
END DO
END IF
END IF
!
!-----------------------------------------------------------------------
! Lateral boundary conditions at the eastern edge.
!-----------------------------------------------------------------------
!
IF (DOMAIN(ng)%Eastern_Edge(tile)) THEN
IF (LBC(ieast,isAC3d,ng)%acquire) THEN
DO d=1,ND
DO j=Jstr,Jend
L0=g*otwopi*MAX(Tr_min,WAVEP(ng)%Tr(Iend+1,j,d))**2.0_r8
k0=twopi/L0
error=100.0_r8
wr=twopi/MAX(Tr_min,WAVEP(ng)%Tr(Iend+1,j,d))
DO WHILE(error.gt.maxErr)
kh=k0*WAVEP(ng)%h_tot(Iend+1,j)
tanhkh=TANH(kh)
cff1=wr**2.0_r8
cff2=-g*k0*tanhkh
F=cff1+cff2
cff1=-g*tanhkh
cff2=-g*kh/COSH(kh)**2.0_r8
FDER=cff1+cff2
k1=k0-F/FDER
error=100.0_r8*ABS((k1-k0)/k0)
k0=k1
END DO
kwc(Iend+1,j,d)=MAX(kwc_min,MIN(k0,kwc_max))
# ifdef MASKING
kwc(Iend+1,j,d)=kwc(Iend+1,j,d)* &
& GRID(ng)%rmask(Iend+1,j)
# endif
END DO
END DO
ELSE
DO d=1,ND
DO j=Jstr,Jend
kwc(Iend+1,j,d)=kwc(Iend,j,d)
# ifdef MASKING
kwc(Iend+1,j,d)=kwc(Iend+1,j,d)* &
& GRID(ng)%rmask(Iend+1,j)
# endif
END DO
END DO
END IF
END IF
END IF
!-----------------------------------------------------------------------
! Lateral boundary conditions at the southern edge.
!-----------------------------------------------------------------------
!
IF (.not.NSperiodic(ng)) THEN
IF (DOMAIN(ng)%Southern_Edge(tile)) THEN
IF (LBC(isouth,isAC3d,ng)%acquire) THEN
DO d=1,ND
DO i=Istr,Iend
! L0=g*otwopi*MAX(Tr_min,WAVEP(ng)%Tr(i,Jstr-1,d))**2.0_r8
L0=g*otwopi*MAX(Tr_min,WAVEG(ng)%Trep)**2.0_r8
k0=twopi/L0
error=100.0_r8
! wr=twopi/MAX(Tr_min,WAVEP(ng)%Tr(i,Jstr-1,d))
wr=twopi/MAX(Tr_min,WAVEG(ng)%Trep)
DO WHILE(error.gt.maxErr)
kh=k0*WAVEP(ng)%h_tot(i,Jstr-1)
tanhkh=TANH(kh)
cff1=wr**2.0_r8
cff2=-g*k0*tanhkh
F=cff1+cff2
cff1=-g*tanhkh
cff2=-g*kh/COSH(kh)**2.0_r8
FDER=cff1+cff2
k1=k0-F/FDER
error=100.0_r8*ABS((k1-k0)/k0)
k0=k1
END DO
kwc(i,Jstr-1,d)=MAX(kwc_min,MIN(k0,kwc_max))
# ifdef MASKING
kwc(i,Jstr-1,d)=kwc(i,Jstr-1,d)* &
& GRID(ng)%rmask(i,Jstr-1)
# endif
END DO
END DO
ELSE
DO d=1,ND
DO i=Istr,Iend
kwc(i,Jstr-1,d)=kwc(i,Jstr,d)
# ifdef MASKING
kwc(i,Jstr-1,d)=kwc(i,Jstr-1,d)* &
& GRID(ng)%rmask(i,Jstr-1)
# endif
END DO
END DO
END IF
END IF
!
!-----------------------------------------------------------------------
! Lateral boundary conditions at the northern edge.
!-----------------------------------------------------------------------
!
IF (DOMAIN(ng)%Northern_Edge(tile)) THEN
IF (LBC(inorth,isAC3d,ng)%acquire) THEN
DO d=1,ND
DO i=Istr,Iend
L0=g*otwopi*MAX(Tr_min,WAVEP(ng)%Tr(i,Jend+1,d))**2.0_r8
k0=twopi/L0
error=100.0_r8
wr=twopi/MAX(Tr_min,WAVEP(ng)%Tr(i,Jend+1,d))
DO WHILE(error.gt.maxErr)
kh=k0*WAVEP(ng)%h_tot(i,Jend+1)
tanhkh=TANH(kh)
cff1=wr**2.0_r8
cff2=-g*k0*tanhkh
F=cff1+cff2
cff1=-g*tanhkh
cff2=-g*kh/COSH(kh)**2.0_r8
FDER=cff1+cff2
k1=k0-F/FDER
error=100.0_r8*ABS((k1-k0)/k0)
k0=k1
END DO
kwc(i,Jend+1,d)=MAX(kwc_min,MIN(k0,kwc_max))
# ifdef MASKING
kwc(i,Jend+1,d)=kwc(i,Jend+1,d)* &
& GRID(ng)%rmask(i,Jend+1)
# endif
END DO
END DO
ELSE
DO d=1,ND
DO i=Istr,Iend
kwc(i,Jend+1,d)=kwc(i,Jend,d)
# ifdef MASKING
kwc(i,Jend+1,d)=kwc(i,Jend+1,d)* &
& GRID(ng)%rmask(i,Jend+1)
# endif
END DO
END DO
END IF
END IF
END IF
!
!-----------------------------------------------------------------------
! Boundary corners.
!-----------------------------------------------------------------------
!
IF (.not.(EWperiodic(ng).or.NSperiodic(ng))) THEN
IF (DOMAIN(ng)%SouthWest_Corner(tile)) THEN
IF (LBC_apply(ng)%south(Istr-1).and. &
& LBC_apply(ng)%west (Jstr-1)) THEN
DO d=1,ND
kwc(Istr-1,Jstr-1,d)=0.5_r8* &
& (kwc(Istr,Jstr-1,d)+ &
& kwc(Istr-1,Jstr,d))
END DO
END IF
END IF
IF (DOMAIN(ng)%SouthEast_Corner(tile)) THEN
IF (LBC_apply(ng)%south(Iend+1).and. &
& LBC_apply(ng)%east (Jstr-1)) THEN
DO d=1,ND
kwc(Iend+1,Jstr-1,d)=0.5_r8* &
& (kwc(Iend ,Jstr-1,d)+ &
& kwc(Iend+1,Jstr ,d))
END DO
END IF
END IF
IF (DOMAIN(ng)%NorthWest_Corner(tile)) THEN
IF (LBC_apply(ng)%north(Istr-1).and. &
& LBC_apply(ng)%west (Jend+1)) THEN
DO d=1,ND
kwc(Istr-1,Jend+1,d)=0.5_r8* &
& (kwc(Istr-1,Jend ,d)+ &
& kwc(Istr ,Jend+1,d))
END DO
END IF
END IF
IF (DOMAIN(ng)%NorthEast_Corner(tile)) THEN
IF (LBC_apply(ng)%north(Iend+1).and. &
& LBC_apply(ng)%east (Jend+1)) THEN
DO d=1,ND
kwc(Iend+1,Jend+1,d)=0.5_r8* &
& (kwc(Iend+1,Jend ,d)+ &
& kwc(Iend ,Jend+1,d))
END DO
END IF
END IF
END IF
RETURN
END SUBROUTINE kwc3dbc_tile
#endif
END MODULE kwc3dbc_mod