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

!VERS

! This file is part of Code_Saturne, a general-purpose CFD tool.
!
! Copyright (C) 1998-2015 EDF S.A.
!
! This program 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.
!
! This program 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
! this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
! Street, Fifth Floor, Boston, MA 02110-1301, USA.

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

!===============================================================================
! Purpose:
! -------

!> \file cs_user_initialization.f90 atmospheric example
!>
!-------------------------------------------------------------------------------

!-------------------------------------------------------------------------------
! Arguments
!______________________________________________________________________________.
!  mode           name          role                                           !
!______________________________________________________________________________!
!> \param[in]     nvar          total number of variables
!> \param[in]     nscal         total number of scalars
!> \param[in]     dt            time step (per cell)
!_______________________________________________________________________________


subroutine cs_user_initialization &
!================================

 ( nvar   , nscal  ,                                              &
   dt     )

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

!===============================================================================
! Module files
!===============================================================================

use paramx
use pointe
use numvar
use optcal
use cstphy
use cstnum
use entsor
use parall
use period
use ppppar
use ppthch
use coincl
use cpincl
use ppincl
use atincl
use ctincl
use elincl
use ppcpfu
use cs_coal_incl
use cs_fuel_incl
use mesh
use field

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

implicit none

! Arguments

integer          nvar   , nscal

double precision dt(ncelet)

! Local variables

!< [loc_var_dec]
integer          iel
double precision d2s3
double precision zent,xuent,xvent,xkent,xeent,tpent

double precision, dimension(:,:), pointer :: cvar_vel

integer, allocatable, dimension(:) :: lstelt

double precision, dimension(:), pointer :: cvar_k, cvar_ep, cvar_phi, cvar_fb
double precision, dimension(:), pointer :: cvar_omg, cvar_nusa
double precision, dimension(:), pointer :: cvar_r11, cvar_r22, cvar_r33
double precision, dimension(:), pointer :: cvar_r12, cvar_r13, cvar_r23
double precision, dimension(:), pointer :: cvar_scalt

!< [loc_var_dec]

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

!---------------
! Initialization
!---------------

!< [init]
! Map field arrays
call field_get_val_v(ivarfl(iu), cvar_vel)

allocate(lstelt(ncel)) ! temporary array for cells selection

d2s3 = 2.d0/3.d0

!===============================================================================
! Initialize variables using an input meteo profile
!   (only if we are not doing a restart)
!===============================================================================

if (isuite.eq.0) then

  if (itytur.eq.2) then
    call field_get_val_s(ivarfl(ik), cvar_k)
    call field_get_val_s(ivarfl(iep), cvar_ep)
  elseif (itytur.eq.3) then
    call field_get_val_s(ivarfl(ir11), cvar_r11)
    call field_get_val_s(ivarfl(ir22), cvar_r22)
    call field_get_val_s(ivarfl(ir33), cvar_r33)
    call field_get_val_s(ivarfl(ir12), cvar_r12)
    call field_get_val_s(ivarfl(ir13), cvar_r13)
    call field_get_val_s(ivarfl(ir23), cvar_r23)
    call field_get_val_s(ivarfl(iep), cvar_ep)
  elseif (iturb.eq.50) then
    call field_get_val_s(ivarfl(ik), cvar_k)
    call field_get_val_s(ivarfl(iep), cvar_ep)
    call field_get_val_s(ivarfl(iphi), cvar_phi)
    call field_get_val_s(ivarfl(ifb), cvar_fb)
  elseif (iturb.eq.60) then
    call field_get_val_s(ivarfl(ik), cvar_k)
    call field_get_val_s(ivarfl(iomg), cvar_omg)
  elseif (iturb.eq.70) then
    call field_get_val_s(ivarfl(inusa), cvar_nusa)
  endif

  do iel = 1, ncel

    zent = xyzcen(3,iel)

    call intprf                                                   &
    !==========
   (nbmetd, nbmetm,                                               &
    zdmet, tmmet, umet , zent  , ttcabs, xuent )

    call intprf                                                   &
    !==========
   (nbmetd, nbmetm,                                               &
    zdmet, tmmet, vmet , zent  , ttcabs, xvent )

    call intprf                                                   &
    !==========
   (nbmetd, nbmetm,                                               &
    zdmet, tmmet, ekmet, zent  , ttcabs, xkent )

    call intprf                                                   &
    !==========
   (nbmetd, nbmetm,                                               &
    zdmet, tmmet, epmet, zent  , ttcabs, xeent )

    cvar_vel(1,iel) = xuent
    cvar_vel(2,iel) = xvent
    cvar_vel(3,iel) = 0.d0

!     ITYTUR est un indicateur qui vaut ITURB/10
    if    (itytur.eq.2) then

      cvar_k(iel)  = xkent
      cvar_ep(iel) = xeent

    elseif (itytur.eq.3) then

      cvar_r11(iel) = d2s3*xkent
      cvar_r22(iel) = d2s3*xkent
      cvar_r33(iel) = d2s3*xkent
      cvar_r12(iel) = 0.d0
      cvar_r13(iel) = 0.d0
      cvar_r23(iel) = 0.d0
      cvar_ep(iel)  = xeent

    elseif (iturb.eq.50) then

      cvar_k(iel)   = xkent
      cvar_ep(iel)  = xeent
      cvar_phi(iel) = d2s3
      cvar_fb(iel)  = 0.d0

    elseif (iturb.eq.60) then

      cvar_k(iel)   = xkent
      cvar_omg(iel) = xeent/cmu/xkent

    elseif (iturb.eq.70) then

      cvar_nusa(iel) = cmu*xkent**2/xeent

    endif

    if (iscalt.ge.0) then
! On suppose que le scalaire est la temperature potentielle :
      call intprf                                                 &
      !==========
   (nbmett, nbmetm,                                               &
    ztmet, tmmet, tpmet, zent  , ttcabs, tpent )

      call field_get_val_s(ivarfl(isca(iscalt)), cvar_scalt)
      cvar_scalt(iel) = tpent

    endif
  enddo

endif
!< [init]

!--------
! Formats
!--------

!----
! End
!----

! Deallocate the temporary array
deallocate(lstelt)

return
end subroutine cs_user_initialization
