RADI_floFlimBcondZeroGrad.F90

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!******************************************************************************
!
! Purpose: update radiant Energy in dummy cells at boundary patch assuming
!          zero gradient boundary.
!
! Description: none.
!
! Input: region = region dimensions, user input
!        patch  = current patch.
!
! Output: region%levels%radi%cv = radiant Energy in dummy cells.
!
! Notes: none.
!
!******************************************************************************
!
! $Id: RADI_floFlimBcondZeroGrad.F90,v 1.3 2008/12/06 08:44:38 mtcampbe Exp $
!
! Copyright: (c) 2003 by the University of Illinois
!
!******************************************************************************

SUBROUTINE radi_floflimbcondzerograd( region,patch )

  USE moddatatypes
  USE modbndpatch, ONLY   : t_patch
  USE moddatastruct, ONLY : t_region
  USE modinterfaces, ONLY : rflo_getpatchindices, rflo_getpatchdirection, &
                            rflo_getcelloffset
  USE moderror
  USE modparameters
  IMPLICIT NONE

#include "Indexing.h"

! ... parameters
  TYPE(t_region) :: region
  TYPE(t_patch)  :: patch

! ... loop variables
  INTEGER :: idum, i, j, k, l

! ... local variables
  INTEGER :: ibeg, iend, jbeg, jend, kbeg, kend, idir, jdir, kdir
  INTEGER :: ilev, icoff, ijcoff, ijkc, ijkc1, ijkd, ncv

  REAL(RFREAL), POINTER :: cv(:,:)

!******************************************************************************

  CALL registerfunction( region%global,'RADI_FloFlimBcondZeroGrad',&
  'RADI_floFlimBcondZeroGrad.F90' )

! get dimensions and pointers

  ilev   = region%currLevel

  CALL rflo_getpatchindices( region,patch,ilev, &
                             ibeg,iend,jbeg,jend,kbeg,kend )
  CALL rflo_getpatchdirection( patch,idir,jdir,kdir )
  CALL rflo_getcelloffset( region,ilev,icoff,ijcoff )

  ncv =  region%radiInput%nCv
  cv  => region%levels(ilev)%radi%cv

! loop over all cells of a patch

  DO idum=1,region%nDumCells
    DO k=kbeg,kend
      DO j=jbeg,jend
        DO i=ibeg,iend
          ijkd  = indijk(i-idum*idir,j-idum*jdir,k-idum*kdir,icoff,ijcoff)
          ijkc  = indijk(i, j, k,icoff,ijcoff)
          ijkc1 = indijk(i+(idum-1)*idir,j+(idum-1)*jdir,k+(idum-1)*kdir,icoff,ijcoff)
          IF (idum == 1) THEN
            DO l=1,ncv
              cv(l,ijkd) = cv(l,ijkc)
            ENDDO
          ELSE
            DO l=1,ncv
              cv(l,ijkd) = 2._rfreal*cv(l,ijkc) - cv(l,ijkc1)
            ENDDO
          ENDIF
        ENDDO  ! i
      ENDDO    ! j
    ENDDO      ! k
  ENDDO        ! idum

! finalize

  CALL deregisterfunction( region%global )

END SUBROUTINE radi_floflimbcondzerograd

!******************************************************************************
!
! RCS Revision history:
!
! $Log: RADI_floFlimBcondZeroGrad.F90,v $
! Revision 1.3  2008/12/06 08:44:38  mtcampbe
! Updated license.
!
! Revision 1.2  2008/11/19 22:17:50  mtcampbe
! Added Illinois Open Source License/Copyright
!
! Revision 1.1  2004/09/30 17:49:10  wasistho
! prepared for full FLD radiation model
!
!
!
!******************************************************************************