TURB_RansEmsInit.F90

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!******************************************************************************
!
! Purpose: set initial solution field to turbulence transport equations, 
!          if any (selected model is of RaNS class), for first EMS stage,
!          and initiate dissipation at stages > 1.
!
! Description: none.
!
! Input: region = data of current region,
!        iStage = current EMS stage.
!
! Output: region%levels%turb = initial values
!
! Notes: none.
!
!******************************************************************************
!
! $Id: TURB_RansEmsInit.F90,v 1.6 2008/12/06 08:44:42 mtcampbe Exp $
!
! Copyright: (c) 2003 by the University of Illinois
!
!******************************************************************************

SUBROUTINE turb_ransemsinit( 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, ldiss(5)
  REAL(RFREAL) :: blend1, betrk(5)
  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_RansEmsInit',&
  'TURB_RansEmsInit.F90' )
  
! get parameters, dimensions and pointers -------------------------------------

  ldiss(:) = region%mixtInput%ldiss(:)
  betrk(:) = region%mixtInput%betrk(:)

#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 and initialize dissipation --------------------------
  
  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
  ENDIF
  IF (istage>1 .AND. ldiss(istage)/=0) THEN
    blend1 = 1._rfreal - betrk(istage)
    DO ic=ibc,iec
      DO idx=idxbeg, idxend
        tdiss(idx,ic) = blend1*tdiss(idx,ic)
      ENDDO
    ENDDO
  ENDIF ! iStage

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

  CALL deregisterfunction( global )

END SUBROUTINE turb_ransemsinit

!******************************************************************************
!
! RCS Revision history:
!
! $Log: TURB_RansEmsInit.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 06:35:40  wasistho
! incorporated HDESSA
!
! Revision 1.3  2004/07/03 02:04:39  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 1.3  2004/02/26 21:24:33  wasistho
! make it private to rocturb, delete GOTO..
!
! Revision 1.2  2003/10/20 00:36:34  wasistho
! fixed subroutine name in register function
!
! Revision 1.1  2003/10/16 20:20:03  wasistho
! installed RaNS in steady state flow (Exp.Mult.Stg)
!
!
!******************************************************************************