!-------------------------------------------------------------------------------

!     This file is part of the Code_Saturne Kernel, element of the
!     Code_Saturne CFD tool.

!     Copyright (C) 1998-2009 EDF S.A., France

!     contact: saturne-support@edf.fr

!     The Code_Saturne Kernel is free software; you can redistribute it
!     and/or modify it under the terms of the GNU General Public License
!     as published by the Free Software Foundation; either version 2 of
!     the License, or (at your option) any later version.

!     The Code_Saturne Kernel is distributed in the hope that it will be
!     useful, but WITHOUT ANY WARRANTY; without even the implied warranty
!     of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
!     GNU General Public License for more details.

!     You should have received a copy of the GNU General Public License
!     along with the Code_Saturne Kernel; if not, write to the
!     Free Software Foundation, Inc.,
!     51 Franklin St, Fifth Floor,
!     Boston, MA  02110-1301  USA

!-------------------------------------------------------------------------------

subroutine cfiniv &
!================

 ( idbia0 , idbra0 ,                                              &
   ndim   , ncelet , ncel   , nfac   , nfabor , nfml   , nprfml , &
   nnod   , lndfac , lndfbr , ncelbr ,                            &
   nvar   , nscal  , nphas  ,                                     &
   nideve , nrdeve , nituse , nrtuse ,                            &
   ifacel , ifabor , ifmfbr , ifmcel , iprfml , maxelt , lstelt , &
   ipnfac , nodfac , ipnfbr , nodfbr ,                            &
   idevel , ituser , ia     ,                                     &
   xyzcen , surfac , surfbo , cdgfac , cdgfbo , xyznod , volume , &
   dt     , rtp    , propce , propfa , propfb , coefa  , coefb  , &
   rdevel , rtuser , ra     )

!===============================================================================
! FONCTION :
! --------

! INITIALISATION DES VARIABLES DE CALCUL
!    POUR LA PHYSIQUE PARTICULIERE : COMPRESSIBLE SANS CHOC
!    PENDANT DE USINIV.F

! Cette routine est appelee en debut de calcul (suite ou non)
!     avant le debut de la boucle en temps

! Elle permet d'INITIALISER ou de MODIFIER (pour les calculs suite)
!     les variables de calcul,
!     les valeurs du pas de temps


! On dispose ici de ROM et VISCL initialises par RO0 et VISCL0
!     ou relues d'un fichier suite
! On ne dispose des variables VISCLS, CP (quand elles sont
!     definies) que si elles ont pu etre relues dans un fichier
!     suite de calcul

! Les proprietes physiaues sont accessibles dans le tableau
!     PROPCE (prop au centre), PROPFA (aux faces internes),
!     PROPFB (prop aux faces de bord)
!     Ainsi,
!      PROPCE(IEL,IPPROC(IROM  (IPHAS))) designe ROM   (IEL ,IPHAS)
!      PROPCE(IEL,IPPROC(IVISCL(IPHAS))) designe VISCL (IEL ,IPHAS)
!      PROPCE(IEL,IPPROC(ICP   (IPHAS))) designe CP    (IEL ,IPHAS)
!      PROPCE(IEL,IPPROC(IVISLS(ISCAL))) designe VISLS (IEL ,ISCAL)

!      PROPFA(IFAC,IPPROF(IFLUMA(IVAR ))) designe FLUMAS(IFAC,IVAR)

!      PROPFB(IFAC,IPPROB(IROM  (IPHAS))) designe ROMB  (IFAC,IPHAS)
!      PROPFB(IFAC,IPPROB(IFLUMA(IVAR ))) designe FLUMAB(IFAC,IVAR)

! LA MODIFICATION DES PROPRIETES PHYSIQUES (ROM, VISCL, VISCLS, CP)
!     SE FERA EN STANDARD DANS LE SOUS PROGRAMME PPPHYV
!     ET PAS ICI

! Arguments
!__________________.____._____.________________________________________________.
! name             !type!mode ! role                                           !
!__________________!____!_____!________________________________________________!
! idbia0           ! i  ! <-- ! number of first free position in ia            !
! idbra0           ! i  ! <-- ! number of first free position in ra            !
! ndim             ! i  ! <-- ! spatial dimension                              !
! ncelet           ! i  ! <-- ! number of extended (real + ghost) cells        !
! ncel             ! i  ! <-- ! number of cells                                !
! nfac             ! i  ! <-- ! number of interior faces                       !
! nfabor           ! i  ! <-- ! number of boundary faces                       !
! nfml             ! i  ! <-- ! number of families (group classes)             !
! nprfml           ! i  ! <-- ! number of properties per family (group class)  !
! nnod             ! i  ! <-- ! number of vertices                             !
! lndfac           ! i  ! <-- ! size of nodfac indexed array                   !
! lndfbr           ! i  ! <-- ! size of nodfbr indexed array                   !
! ncelbr           ! i  ! <-- ! number of cells with faces on boundary         !
! nvar             ! i  ! <-- ! total number of variables                      !
! nscal            ! i  ! <-- ! total number of scalars                        !
! nphas            ! i  ! <-- ! number of phases                               !
! nideve, nrdeve   ! i  ! <-- ! sizes of idevel and rdevel arrays              !
! nituse, nrtuse   ! i  ! <-- ! sizes of ituser and rtuser arrays              !
! ifacel(2, nfac)  ! ia ! <-- ! interior faces -> cells connectivity           !
! ifabor(nfabor)   ! ia ! <-- ! boundary faces -> cells connectivity           !
! ifmfbr(nfabor)   ! ia ! <-- ! boundary face family numbers                   !
! ifmcel(ncelet)   ! ia ! <-- ! cell family numbers                            !
! iprfml           ! ia ! <-- ! property numbers per family                    !
!  (nfml, nprfml)  !    !     !                                                !
! maxelt           ! i  ! <-- ! max number of cells and faces (int/boundary)   !
! lstelt(maxelt)   ! ia ! --- ! work array                                     !
! ipnfac(nfac+1)   ! ia ! <-- ! interior faces -> vertices index (optional)    !
! nodfac(lndfac)   ! ia ! <-- ! interior faces -> vertices list (optional)     !
! ipnfbr(nfabor+1) ! ia ! <-- ! boundary faces -> vertices index (optional)    !
! nodfbr(lndfbr)   ! ia ! <-- ! boundary faces -> vertices list (optional)     !
! idevel(nideve)   ! ia ! <-> ! integer work array for temporary development   !
! ituser(nituse)   ! ia ! <-> ! user-reserved integer work array               !
! ia(*)            ! ia ! --- ! main integer work array                        !
! xyzcen           ! ra ! <-- ! cell centers                                   !
!  (ndim, ncelet)  !    !     !                                                !
! surfac           ! ra ! <-- ! interior faces surface vectors                 !
!  (ndim, nfac)    !    !     !                                                !
! surfbo           ! ra ! <-- ! boundary faces surface vectors                 !
!  (ndim, nfabor)  !    !     !                                                !
! cdgfac           ! ra ! <-- ! interior faces centers of gravity              !
!  (ndim, nfac)    !    !     !                                                !
! cdgfbo           ! ra ! <-- ! boundary faces centers of gravity              !
!  (ndim, nfabor)  !    !     !                                                !
! xyznod           ! ra ! <-- ! vertex coordinates (optional)                  !
!  (ndim, nnod)    !    !     !                                                !
! volume(ncelet)   ! ra ! <-- ! cell volumes                                   !
! dt(ncelet)       ! tr ! <-- ! valeur du pas de temps                         !
! rtp              ! tr ! <-- ! variables de calcul au centre des              !
! (ncelet,*)       !    !     !    cellules                                    !
! propce(ncelet, *)! ra ! <-- ! physical properties at cell centers            !
! propfa(nfac, *)  ! ra ! <-- ! physical properties at interior face centers   !
! propfb(nfabor, *)! ra ! <-- ! physical properties at boundary face centers   !
! coefa coefb      ! tr ! <-- ! conditions aux limites aux                     !
!  (nfabor,*)      !    !     !    faces de bord                               !
! rdevel(nrdeve)   ! ra ! <-> ! real work array for temporary development      !
! rtuser(nrtuse)   ! ra ! <-> ! user-reserved real work array                  !
! ra(*)            ! ra ! --- ! main real work array                           !
!__________________!____!_____!________________________________________________!

!     TYPE : E (ENTIER), R (REEL), A (ALPHANUMERIQUE), T (TABLEAU)
!            L (LOGIQUE)   .. ET TYPES COMPOSES (EX : TR TABLEAU REEL)
!     MODE : <-- donnee, --> resultat, <-> Donnee modifiee
!            --- tableau de travail
!===============================================================================

implicit none

!===============================================================================
! Common blocks
!===============================================================================

include "paramx.h"
include "numvar.h"
include "optcal.h"
include "cstphy.h"
include "cstnum.h"
include "entsor.h"
include "parall.h"
include "period.h"
include "ppppar.h"
include "ppthch.h"
include "ppincl.h"

!===============================================================================

integer          idbia0 , idbra0
integer          ndim   , ncelet , ncel   , nfac   , nfabor
integer          nfml   , nprfml
integer          nnod   , lndfac , lndfbr , ncelbr
integer          nvar   , nscal  , nphas
integer          nideve , nrdeve , nituse , nrtuse

integer          ifacel(2,nfac) , ifabor(nfabor)
integer          ifmfbr(nfabor) , ifmcel(ncelet)
integer          iprfml(nfml,nprfml), maxelt, lstelt(maxelt)
integer          ipnfac(nfac+1), nodfac(lndfac)
integer          ipnfbr(nfabor+1), nodfbr(lndfbr)
integer          idevel(nideve), ituser(nituse), ia(*)

double precision xyzcen(ndim,ncelet)
double precision surfac(ndim,nfac), surfbo(ndim,nfabor)
double precision cdgfac(ndim,nfac), cdgfbo(ndim,nfabor)
double precision xyznod(ndim,nnod), volume(ncelet)
double precision dt(ncelet), rtp(ncelet,*), propce(ncelet,*)
double precision propfa(nfac,*), propfb(nfabor,*)
double precision coefa(nfabor,*), coefb(nfabor,*)
double precision rdevel(nrdeve), rtuser(nrtuse), ra(*)

! Local variables

integer          idebia, idebra
integer          ifinia, ifinra
integer          iwcel1, iwcel2, iwcel3, iwcel4
integer          iel   , iphas , iccfth, imodif
integer          iirom , iiromb, ifac


! NOMBRE DE PASSAGES DANS LA ROUTINE

integer          ipass
data             ipass /0/
save             ipass

!===============================================================================
!===============================================================================
! 1.  INITIALISATION VARIABLES LOCALES
!===============================================================================

ipass = ipass + 1

idebia = idbia0
idebra = idbra0

! --- Reservation de la memoire pour appel à uscfth

call memcfv                                                       &
!==========
 ( idebia , idebra ,                                              &
   ndim   , ncelet , ncel   , nfac   , nfabor , nfml   , nprfml , &
   nnod   , lndfac , lndfbr ,                                     &
   nideve , nrdeve , nituse , nrtuse ,                            &
   iwcel1 , iwcel2 , iwcel3 , iwcel4 ,                            &
   ifinia , ifinra )

idebia = ifinia
idebra = ifinra

!===============================================================================
! 2. INITIALISATION DES INCONNUES :
!      UNIQUEMENT SI ON NE FAIT PAS UNE SUITE
!===============================================================================

if ( isuite.eq.0 ) then

  if ( ipass.eq.1 ) then

! ----- Initialisations par defaut

    do iphas = 1, nphas

!     ON MET LA TEMPERATURE A T0
      do iel = 1, ncel
        rtp(iel,isca(itempk((iphas)))) = t0(iphas)
      enddo

!     On initialise Cv, rho et l'energie
      iccfth = 0
      imodif = 1

      call uscfth                                                 &
      !==========
 ( idebia , idebra ,                                              &
   ndim   , ncelet , ncel   , nfac   , nfabor , nfml   , nprfml , &
   nnod   , lndfac , lndfbr , ncelbr ,                            &
   nvar   , nscal  , nphas  ,                                     &
   iccfth , imodif , iphas  ,                                     &
   nideve , nrdeve , nituse , nrtuse ,                            &
   ifacel , ifabor , ifmfbr , ifmcel , iprfml ,                   &
   ipnfac , nodfac , ipnfbr , nodfbr ,                            &
   idevel , ituser , ia     ,                                     &
   xyzcen , surfac , surfbo , cdgfac , cdgfbo , xyznod , volume , &
   dt     , rtp    , rtp    , propce , propfa , propfb ,          &
   coefa  , coefb  ,                                              &
   ra(iwcel1), ra(iwcel2), ra(iwcel3), ra(iwcel4),                &
   rdevel , rtuser , ra     )

!     On initialise la diffusivite thermique
      visls0(ienerg(iphas)) = visls0(itempk(iphas))/cv0(iphas)

      if(ivisls(ienerg(iphas)).gt.0) then
        if(ivisls(itempk(iphas)).gt.0) then
          if(icv(iphas).gt.0) then
            do iel = 1, ncel
              propce(iel,ipproc(ivisls(ienerg(iphas)))) =         &
                 propce(iel,ipproc(ivisls(itempk(iphas))))        &
                 / propce(iel,ipproc(icv(iphas)))
            enddo
          else
            do iel = 1, ncel
              propce(iel,ipproc(ivisls(ienerg(iphas)))) =         &
           propce(iel,ipproc(ivisls(itempk(iphas)))) / cv0(iphas)
            enddo
          endif
        else
          do iel = 1, ncel
              propce(iel,ipproc(ivisls(ienerg(iphas)))) =         &
           visls0(itempk(iphas)) / propce(iel,ipproc(icv(iphas)))
          enddo
        endif
      endif

    enddo

! ----- On donne la main a l'utilisateur

    call uscfxi                                                   &
    !==========
 ( idebia , idebra ,                                              &
   ndim   , ncelet , ncel   , nfac   , nfabor , nfml   , nprfml , &
   nnod   , lndfac , lndfbr , ncelbr ,                            &
   nvar   , nscal  , nphas  ,                                     &
   nideve , nrdeve , nituse , nrtuse ,                            &
   ifacel , ifabor , ifmfbr , ifmcel , iprfml , maxelt , lstelt , &
   ipnfac , nodfac , ipnfbr , nodfbr ,                            &
   idevel , ituser , ia     ,                                     &
   xyzcen , surfac , surfbo , cdgfac , cdgfbo , xyznod , volume , &
   dt     , rtp    , propce , propfa , propfb , coefa  , coefb  , &
   ra(iwcel1), ra(iwcel2), ra(iwcel3), ra(iwcel4),                &
   rdevel , rtuser , ra     )

! ----- Initialisation des proprietes physiques ROM et ROMB

    do iphas = 1, nphas

      iirom  = ipproc(irom  (iphas))
      iiromb = ipprob(irom  (iphas))

      do iel = 1, ncel
        propce(iel,iirom)  = rtp(iel,isca(irho(iphas)))
      enddo

      do ifac = 1, nfabor
        iel = ifabor(ifac)
        propfb(ifac,iiromb) =                                     &
            coefa(ifac,iclrtp(isca(irho(iphas)),icoef))           &
          + coefb(ifac,iclrtp(isca(irho(iphas)),icoef))           &
                    * rtp(iel,isca(irho(iphas)))
      enddo

    enddo

! ----- Initialisation de la viscosite en volume

    do iphas = 1, nphas

      if(iviscv(iphas).gt.0) then
        do iel = 1, ncel
          propce(iel,ipproc(iviscv(iphas))) = viscv0(iphas)
        enddo
      endif

    enddo

  endif

else

  if ( ipass.eq.1 ) then

! ----- Initialisations par defaut

    do iphas = 1, nphas

!     On initialise Cv

      iccfth = 0
      imodif = 1

      call uscfth                                                 &
      !==========
 ( idebia , idebra ,                                              &
   ndim   , ncelet , ncel   , nfac   , nfabor , nfml   , nprfml , &
   nnod   , lndfac , lndfbr , ncelbr ,                            &
   nvar   , nscal  , nphas  ,                                     &
   iccfth , imodif , iphas  ,                                     &
   nideve , nrdeve , nituse , nrtuse ,                            &
   ifacel , ifabor , ifmfbr , ifmcel , iprfml ,                   &
   ipnfac , nodfac , ipnfbr , nodfbr ,                            &
   idevel , ituser , ia     ,                                     &
   xyzcen , surfac , surfbo , cdgfac , cdgfbo , xyznod , volume , &
   dt     , rtp    , rtp    , propce , propfa , propfb ,          &
   coefa  , coefb  ,                                              &
   ra(iwcel1), ra(iwcel2), ra(iwcel3), ra(iwcel4),                &
   rdevel , rtuser , ra     )

    enddo

  endif

endif

!----
! FORMATS
!----


!----
! FIN
!----

return
end subroutine
