RFLU_InitFlowHardCodeLim.F90

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! ******************************************************************************
!
! Purpose: Initialize part of flow field in a region using hard-coded values.
!
! Description: None.
!
! Input: 
!   pRegion     Pointer to region
!
! Output: None.
!
! Notes: 
!   1. This routine assumes a perfect gas.
!
! ******************************************************************************
!
! $Id: RFLU_InitFlowHardCodeLim.F90,v 1.4 2008/12/06 08:44:56 mtcampbe Exp $
!
! Copyright: (c) 2005-2006 by the University of Illinois
!
! ******************************************************************************

SUBROUTINE rflu_initflowhardcodelim(pRegion)

  USE moddatatypes
  USE moderror
  USE moddatastruct, ONLY: t_region
  USE modmixture, ONLY: t_mixt_input
  USE modglobal, ONLY: t_global
  USE modgrid, ONLY: t_grid
  USE modparameters

  USE modinterfaces, ONLY: mixtperf_eo_dgpuvw, &
                           mixtperf_g_cpr, &
                           mixtperf_r_m
    
  IMPLICIT NONE

! ******************************************************************************
! Declarations and definitions
! ******************************************************************************

! ==============================================================================
! Arguments
! ==============================================================================

  TYPE(t_region), POINTER :: pregion

! ==============================================================================
! Locals
! ==============================================================================

  CHARACTER(CHRLEN) :: rcsidentstring
  INTEGER :: icg,indcp,indmol
  REAL(RFREAL) :: cp,d,mw,p,g,gc,u,v,w,x
  REAL(RFREAL), DIMENSION(:,:), POINTER :: pcv,pgv
  TYPE(t_global), POINTER :: global
  TYPE(t_grid), POINTER :: pgrid
  TYPE(t_mixt_input), POINTER :: pmixtinput

! ******************************************************************************
! Start
! ******************************************************************************

  rcsidentstring = '$RCSfile: RFLU_InitFlowHardCodeLim.F90,v $ $Revision: 1.4 $'

  global => pregion%global

  CALL registerfunction(global,'RFLU_InitFlowHardCodeLim', &
                        'RFLU_InitFlowHardCodeLim.F90')
 
  IF ( global%verbLevel > verbose_none ) THEN
    WRITE(stdout,'(A,1X,A)') solver_name, &
                             'Initializing flow field from limited hard code...'
                             
    IF ( global%verbLevel > verbose_low ) THEN 
      WRITE(stdout,'(A,3X,A,A)') solver_name,'Case: ',trim(global%casename)
    END IF ! global%verbLevel                         
  END IF ! global%verbLevel

! ******************************************************************************
! Set pointers
! ******************************************************************************

  pgrid      => pregion%grid
  pcv        => pregion%mixt%cv
  pgv        => pregion%mixt%gv  
  pmixtinput => pregion%mixtInput
  
  indcp  = pregion%mixtInput%indCp
  indmol = pregion%mixtInput%indMol    
  
! ******************************************************************************
! Initialize flow field based on user input and fluid model
! ******************************************************************************

  SELECT CASE ( pmixtinput%fluidModel )
  
! ==============================================================================
!   Incompressible fluid model
! ==============================================================================  
  
    CASE ( fluid_model_incomp ) 
      pregion%mixt%cvState = cv_mixt_state_prim
      
! TEMPORARY, to be replaced by proper code
      CALL errorstop(global,err_reached_default,__line__) 
! END TEMPORARY

! ==============================================================================
!   Compressible fluid model
! ==============================================================================  
    
    CASE ( fluid_model_comp )
      pregion%mixt%cvState = cv_mixt_state_cons
    
      SELECT CASE ( global%casename )

! ------------------------------------------------------------------------------
!       Cylinder diffracting shock
! ------------------------------------------------------------------------------

        CASE ( "cylds" )
          DO icg = 1,pgrid%nCellsTot
            x = pgrid%cofg(xcoord,icg)

            IF ( x < pmixtinput%prepRealVal1 ) THEN 
              d = pmixtinput%prepRealVal2
              u = pmixtinput%prepRealVal3 
              v = 0.0_rfreal 
              w = 0.0_rfreal 
              p = pmixtinput%prepRealVal4 
            
              mw = pgv(gv_mixt_mol,indmol*icg)
              cp = pgv(gv_mixt_cp ,indcp *icg)
        
              gc = mixtperf_r_m(mw)
              g  = mixtperf_g_cpr(cp,gc)            
            
              pcv(cv_mixt_dens,icg) = d
              pcv(cv_mixt_xmom,icg) = d*u
              pcv(cv_mixt_ymom,icg) = d*v
              pcv(cv_mixt_zmom,icg) = d*w
              pcv(cv_mixt_ener,icg) = d*mixtperf_eo_dgpuvw(d,g,p,u,v,w)               
            END IF ! x
          END DO ! icg           
  
! ------------------------------------------------------------------------------
!       Skews diffracting shock
! ------------------------------------------------------------------------------

! ----- Shock Mach number of 3.0 -----------------------------------------------  

        CASE ( "skews_ms2p0","skews_ms3p0","skews_ms4p0" )
          DO icg = 1,pgrid%nCellsTot
            x = pgrid%cofg(xcoord,icg)

            IF ( x < pmixtinput%prepRealVal1 ) THEN 
              d = pmixtinput%prepRealVal2
              u = pmixtinput%prepRealVal3 
              v = 0.0_rfreal 
              w = 0.0_rfreal 
              p = pmixtinput%prepRealVal4 

              mw = pgv(gv_mixt_mol,indmol*icg)
              cp = pgv(gv_mixt_cp ,indcp *icg)
        
              gc = mixtperf_r_m(mw)
              g  = mixtperf_g_cpr(cp,gc)  

              pcv(cv_mixt_dens,icg) = d
              pcv(cv_mixt_xmom,icg) = d*u
              pcv(cv_mixt_ymom,icg) = d*v
              pcv(cv_mixt_zmom,icg) = d*w
              pcv(cv_mixt_ener,icg) = d*mixtperf_eo_dgpuvw(d,g,p,u,v,w)               
            END IF ! x
          END DO ! icg           
  
! ------------------------------------------------------------------------------
!       Sphere diffracting shock
! ------------------------------------------------------------------------------

        CASE ( "sphds" )
          DO icg = 1,pgrid%nCellsTot
            x = pgrid%cofg(xcoord,icg)

            IF ( x < pmixtinput%prepRealVal1 ) THEN 
              d = pmixtinput%prepRealVal2
              u = pmixtinput%prepRealVal3 
              v = 0.0_rfreal 
              w = 0.0_rfreal 
              p = pmixtinput%prepRealVal4 
            
              mw = pgv(gv_mixt_mol,indmol*icg)
              cp = pgv(gv_mixt_cp ,indcp *icg)
        
              gc = mixtperf_r_m(mw)
              g  = mixtperf_g_cpr(cp,gc)            
            
              pcv(cv_mixt_dens,icg) = d
              pcv(cv_mixt_xmom,icg) = d*u
              pcv(cv_mixt_ymom,icg) = d*v
              pcv(cv_mixt_zmom,icg) = d*w
              pcv(cv_mixt_ener,icg) = d*mixtperf_eo_dgpuvw(d,g,p,u,v,w)               
            END IF ! x
          END DO ! icg           
  
! ------------------------------------------------------------------------------
!       Default - must be due to input error
! ------------------------------------------------------------------------------

        CASE default 
          CALL errorstop(global,err_reached_default,__line__)  
      END SELECT ! global%casename
      
! ==============================================================================
!   Default
! ==============================================================================  
    
    CASE default 
      CALL errorstop(global,err_reached_default,__line__) 
  END SELECT ! pMixtInput%fluidModel

! ******************************************************************************
! End
! ******************************************************************************

  IF ( global%verbLevel > verbose_none ) THEN 
    WRITE(stdout,'(A,1X,A)') solver_name, &
          'Initializing flow field from limited hard code done.'
  END IF ! global%verbLevel

  CALL deregisterfunction(global)

END SUBROUTINE rflu_initflowhardcodelim

! ******************************************************************************
!
! RCS Revision history:
!
! $Log: RFLU_InitFlowHardCodeLim.F90,v $
! Revision 1.4  2008/12/06 08:44:56  mtcampbe
! Updated license.
!
! Revision 1.3  2008/11/19 22:18:06  mtcampbe
! Added Illinois Open Source License/Copyright
!
! Revision 1.2  2006/03/26 20:22:23  haselbac
! Removed error trap for GL model
!
! Revision 1.1  2005/11/10 02:54:20  haselbac
! Renamed to shorten name
!
! Revision 1.6  2005/09/13 21:38:47  haselbac
! Removed hardcoded gamma value
!
! Revision 1.5  2005/07/05 19:49:04  mparmar
! Added init for diffracting shock over sphere
!
! Revision 1.4  2005/06/16 20:57:11  haselbac
! Now use gGas for Skews cases instead of hardcoded 1.4
!
! Revision 1.3  2005/06/16 20:55:54  haselbac
! Added new Skews cases
!
! Revision 1.2  2005/04/22 15:22:34  haselbac
! Changed message printed to screen
!
! Revision 1.1  2005/04/15 16:20:22  haselbac
! Initial revision
!
! ******************************************************************************