TURB_RansRkInit.F90

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!******************************************************************************
!
! Purpose: set initial solution field to turbulence transport equations, 
!          if any (selected model is of RaNS class), for first RK stage.
!
! Description: none.
!
! Input: region = data of current region,
!        iStage = current RK stage.
!
! Output: region%levels%turb = new solution after one time step.
!
! Notes: none.
!
!******************************************************************************
!
! $Id: TURB_RansRkInit.F90,v 1.6 2008/12/06 08:44:42 mtcampbe Exp $
!
! Copyright: (c) 2003 by the University of Illinois
!
!******************************************************************************

SUBROUTINE turb_ransrkinit( region, istage )

  USE moddatatypes
  USE moddatastruct, ONLY : t_region
  USE modglobal, ONLY     : t_global
  USE moderror
  USE modmpi
  USE modparameters
  USE turb_modparameters
#ifdef RFLO
  USE modinterfaces, ONLY : rflo_getdimensdummy, rflo_getcelloffset

#include "Indexing.h"
#endif

  IMPLICIT NONE

! ... parameters
  TYPE(t_region) :: region
  
  INTEGER, INTENT(IN) :: istage

! ... loop variables
  INTEGER :: ic, idx

! ... local variables
  TYPE(t_global), POINTER :: global

  INTEGER :: ibc, iec, idxbeg, idxend
  REAL(RFREAL), POINTER :: tcv(:,:), tcvold(:,:), tdiss(:,:)
  
#ifdef RFLO
  INTEGER :: idcbeg, idcend, jdcbeg, jdcend, kdcbeg, kdcend
  INTEGER :: ilev, icoff, ijcoff
#endif

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

  global => region%global

  CALL registerfunction( global,'TURB_RansRkInit',&
  'TURB_RansRkInit.F90' )

  IF (region%turbInput%modelClass /= model_rans) goto 999
  
! get dimensions and pointers -------------------------------------------------

#ifdef RFLO
  ilev = region%currLevel

  CALL rflo_getdimensdummy( region,ilev,idcbeg,idcend, &
                            jdcbeg,jdcend,kdcbeg,kdcend )
  CALL rflo_getcelloffset( region,ilev,icoff,ijcoff )
  ibc = indijk(idcbeg,jdcbeg,kdcbeg,icoff,ijcoff)
  iec = indijk(idcend,jdcend,kdcend,icoff,ijcoff)

  tcv     => region%levels(ilev)%turb%cv
  tcvold  => region%levels(ilev)%turb%cvOld
  tdiss   => region%levels(ilev)%turb%diss
#endif

#ifdef RFLU
  ibc = 1
  iec = region%grid%nCellsTot        

  tcv     => region%turb%cv
  tcvold  => region%turb%cvOld
  tdiss   => region%turb%diss
#endif

! select start and end index of 1st dimension depending on RaNS model selected

  IF ((region%mixtInput%turbModel == turb_model_sa) .OR. &
      (region%mixtInput%turbModel == turb_model_dessa) .OR. &
      (region%mixtInput%turbModel == turb_model_hdessa)) THEN
    idxbeg = cv_sa_nutil
    idxend = cv_sa_nutil
  ENDIF

! store previous solution; set dissipation to zero ----------------------------
  
  IF (istage == 1) THEN
    DO ic=ibc,iec
      DO idx=idxbeg, idxend
        tcvold(idx,ic) = tcv(idx,ic)
        tdiss(idx,ic)  = 0._rfreal
      ENDDO
    ENDDO
  ELSE
    DO ic=ibc,iec
      DO idx=idxbeg, idxend
        tdiss(idx,ic) = 0._rfreal
      ENDDO
    ENDDO
  ENDIF ! iStage

! finalize --------------------------------------------------------------------

999  CONTINUE

  CALL deregisterfunction( global )

END SUBROUTINE turb_ransrkinit

!******************************************************************************
!
! RCS Revision history:
!
! $Log: TURB_RansRkInit.F90,v $
! Revision 1.6  2008/12/06 08:44:42  mtcampbe
! Updated license.
!
! Revision 1.5  2008/11/19 22:17:54  mtcampbe
! Added Illinois Open Source License/Copyright
!
! Revision 1.4  2005/03/09 06:35:47  wasistho
! incorporated HDESSA
!
! Revision 1.3  2004/07/03 02:07:35  wasistho
! delete ! public
!
! Revision 1.2  2004/03/20 00:29:17  wasistho
! set turb_rflo_ransNumericalDiss to turb_ransNumerical..
!
! Revision 1.1  2004/03/05 04:37:00  wasistho
! changed nomenclature
!
! Revision 1.1  2003/10/07 02:17:03  wasistho
! initial installation of RaNS-SA and DES
!
!
!******************************************************************************