Source_WC_Chaleur_VEF.cpp

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#include <Convection_Diffusion_Chaleur_WC.h>
#include <Source_WC_Chaleur_VEF.h>
#include <Neumann_sortie_libre.h>
#include <Navier_Stokes_WC.h>
#include <Probleme_base.h>
#include <Milieu_base.h>
#include <Domaine_VF.h>
 
Implemente_instanciable(Source_WC_Chaleur_VEF,"Source_WC_Chaleur_VEF",Source_WC_Chaleur);
 
Sortie& Source_WC_Chaleur_VEF::printOn(Sortie& os) const
{
  os <<que_suis_je()<< finl;
  return os;
}
 
Entree& Source_WC_Chaleur_VEF::readOn(Entree& is) { return is; }
 
void Source_WC_Chaleur_VEF::associer_domaines(const Domaine_dis_base& domaine,const Domaine_Cl_dis_base& zcl)
{
  associer_domaines_impl(domaine,zcl);
  associer_volume_porosite_impl(domaine,volumes,porosites);
}
 
void Source_WC_Chaleur_VEF::compute_interpolate_gradP(DoubleTab& UgradP_face, const DoubleTab& Ptot) const
{
  /*
   * NOTE:
   * P_EOS is discretized with a 'temperature' directive, giving in VEF:
   * Ptot => on faces
   * la_vitesse => on faces (VEF)
   * grad_Ptot => on elements
   *
   * The equation is a scalar equation => on faces (VEF)
   * d P_tot / d t = del P / del t + u.grad(P_tot)
   *
   * del P / del t => on faces
   * u.grad(P_tot) !!! grad(P_tot) must be interpolated to faces
   */
 
  const Navier_Stokes_WC& eqHyd = ref_cast(Navier_Stokes_WC,mon_equation->probleme().equation(0));
  const DoubleTab& la_vitesse = eqHyd.vitesse().valeurs();
 
  // grad_Ptot is an element field => think of conductivity (element field in VEF!!)
  DoubleTab grad_Ptot;
  const DoubleTab& lambda = eqHyd.milieu().conductivite().valeurs();
  const int nb = lambda.size_totale(), nbcomp = la_vitesse.line_size();
  assert (nb == lambda.dimension_tot(0) && lambda.line_size() == 1);
  grad_Ptot.resize(nb,nbcomp);
 
  const Convection_Diffusion_Chaleur_WC& eq_chal = ref_cast(Convection_Diffusion_Chaleur_WC,mon_equation.valeur());
  const Operateur_Grad& Op_Grad = eq_chal.operateur_gradient_WC();
  Op_Grad.calculer(Ptot,grad_Ptot); // compute grad(P_tot)
 
  const Domaine_dis_base& domaine_dis = mon_equation->inconnue().domaine_dis_base();
  const Domaine_VF& domaine = ref_cast(Domaine_VF, domaine_dis);
  assert (domaine_dis.que_suis_je() == "Domaine_VEF");
 
  // grad should be zero at boundary
  correct_grad_boundary(domaine,grad_Ptot);
 
  // We compute u*grad(P_tot) on each face
  DoubleTab grad_Ptot_face(la_vitesse); // face fields
 
  // get grad_Ptot on faces
  elem_to_face(domaine,grad_Ptot,grad_Ptot_face);
 
  const int n = la_vitesse.dimension_tot(0);
  assert (UgradP_face.dimension_tot(0) == n && grad_Ptot_face.dimension_tot(0) == n);
  assert (UgradP_face.line_size() == 1 && n == domaine.nb_faces_tot());
  for (int i=0 ; i <n ; i++)
    {
      UgradP_face(i,0) = 0.;
      for (int j=0 ; j <nbcomp ; j++) UgradP_face(i,0) += la_vitesse(i,j) * grad_Ptot_face(i,j);
    }
}
 
// Static methods of Discretisation_tools could be used here... but it requires creating a Champ_base ...
void Source_WC_Chaleur_VEF::elem_to_face(const Domaine_VF& domaine, const DoubleTab& grad_Ptot,DoubleTab& grad_Ptot_face) const
{
  const DoubleVect& vol = domaine.volumes();
  const IntTab& elem_faces = domaine.elem_faces();
  const int nb_face_elem = elem_faces.line_size(), nb_elem_tot = domaine.nb_elem_tot(), nb_comp = grad_Ptot_face.line_size();
  assert (grad_Ptot.dimension_tot(0) == nb_elem_tot && grad_Ptot_face.dimension_tot(0) == domaine.nb_faces_tot());
  assert (grad_Ptot.line_size() == nb_comp);
 
  grad_Ptot_face = 0.;
  for (int ele = 0; ele < nb_elem_tot; ele++)
    for (int s = 0; s < nb_face_elem; s++)
      {
        const int face = elem_faces(ele,s);
        for (int comp = 0; comp < nb_comp; comp++) grad_Ptot_face(face,comp) += grad_Ptot(ele,comp)*vol(ele);
      }
 
  for (int f=0; f<domaine.nb_faces_tot(); f++)
    for (int comp=0; comp<nb_comp; comp++) grad_Ptot_face(f,comp) /= volumes(f)*nb_face_elem;
}