Neumann_paroi_rayo_semi_transp_VDF.cpp

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#include <Neumann_paroi_rayo_semi_transp_VDF.h>
#include <Pb_rayo_semi_transp.h>
#include <Fluide_Incompressible.h>
#include <Champ_front_uniforme.h>
#include <Schema_Temps_base.h>
#include <Champ_Uniforme.h>
#include <communications.h>
#include <Domaine_VDF.h>
 
Implemente_instanciable(Neumann_paroi_rayo_semi_transp_VDF, "Paroi_flux_impose_rayo_semi_transp_VDF", Neumann_paroi);
 
Sortie& Neumann_paroi_rayo_semi_transp_VDF::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Neumann_paroi_rayo_semi_transp_VDF::readOn(Entree& is)
{
  is >> le_champ_front;
  return is;
}
 
double Neumann_paroi_rayo_semi_transp_VDF::flux_impose(int i) const
{
  const Domaine_VDF& zvdf = ref_cast(Domaine_VDF, domaine_Cl_dis().domaine_dis());
  const IntTab& face_voisins = zvdf.face_voisins();
  const Front_VF& front_vf = ref_cast(Front_VF, frontiere_dis());
  int ndeb = front_vf.num_premiere_face();
 
  int elem = face_voisins(ndeb + i, 0);
  if (elem == -1)
    elem = face_voisins(ndeb + i, 1);
 
  double signe = 1;
  const DoubleTab& flux_radiatif = pb_rayo_semi_transp().flux_radiatif(frontiere_dis().le_nom()).valeurs();
 
  if (le_champ_front->valeurs().size() == 1)
    return signe * le_champ_front->valeurs()(0, 0) - flux_radiatif(i, 0);
  else if (le_champ_front->valeurs().dimension(1) == 1)
    return signe * (le_champ_front->valeurs()(i, 0) - flux_radiatif(i, 0));
  else
    Cerr << "Neumann_paroi_rayo_semi_transp_VDF::flux_impose error" << finl;
 
  return 0;
}
 
double Neumann_paroi_rayo_semi_transp_VDF::flux_impose(int i, int j) const
{
  const Domaine_VDF& zvdf = ref_cast(Domaine_VDF, domaine_Cl_dis().domaine_dis());
  const IntTab& face_voisins = zvdf.face_voisins();
  const Front_VF& front_vf = ref_cast(Front_VF, frontiere_dis());
  int ndeb = front_vf.num_premiere_face();
 
  int elem = face_voisins(ndeb + i, 0);
  if (elem == -1)
    elem = face_voisins(ndeb + i, 1);
 
  const DoubleTab& flux_radiatif = pb_rayo_semi_transp().flux_radiatif(frontiere_dis().le_nom()).valeurs();
 
  if (le_champ_front->valeurs().dimension(0) == 1)
    return le_champ_front->valeurs()(0, j) - flux_radiatif(i);
  else
    return le_champ_front->valeurs()(i, j) - flux_radiatif(i);
}
 
const Cond_lim_base& Neumann_paroi_rayo_semi_transp_VDF::la_cl() const
{
  return (*this);
}
 
void Neumann_paroi_rayo_semi_transp_VDF::calculer_temperature_bord(double temps)
{
  const Domaine_VDF& zvdf = ref_cast(Domaine_VDF, domaine_Cl_dis().domaine_dis());
  const IntTab& face_voisins = zvdf.face_voisins();
  const Milieu_base& le_milieu = mon_dom_cl_dis->equation().milieu();
  ////const Champ_Uniforme& Lambda = ref_cast(Champ_Uniforme,le_milieu.conductivite());
  const Front_VF& front_vf = ref_cast(Front_VF, frontiere_dis());
  int nb_faces = front_vf.nb_faces();
  int ndeb = front_vf.num_premiere_face();
  const DoubleTab& rho = le_milieu.masse_volumique().valeurs();
  const DoubleTab& Cp = le_milieu.capacite_calorifique().valeurs();
  const DoubleTab& Lambda = le_milieu.conductivite().valeurs();
 
  assert(le_milieu.capacite_calorifique().nb_comp() == 1);
  assert(le_milieu.masse_volumique().nb_comp() == 1);
  double d_Cp, d_rho, d_Lambda;
  if (Cp.get_md_vector() || rho.get_md_vector() || Lambda.get_md_vector())
    {
      // One of the fields is not uniform
      ArrOfDouble tmp(3);
      tmp[0] = local_max_vect(Cp);
      tmp[1] = local_max_vect(rho);
      tmp[2] = local_max_vect(Lambda);
      mp_max_for_each_item(tmp);
      d_Cp = tmp[0];
      d_rho = tmp[1];
      d_Lambda = tmp[2];
    }
  else
    {
      // All fields are uniform. Shortcut because mp_max is costly
      d_Cp = Cp(0, 0);
      d_rho = rho(0, 0);
      d_Lambda = Lambda(0, 0);
    }
 
  Schema_Temps_base& sch = mon_dom_cl_dis->equation().probleme().schema_temps();
  double dt = sch.pas_de_temps();
 
  //  Cerr<<"Nom du bord : "<<front_vf.le_nom()<<finl;
  ////double d_Lambda = Lambda(0,0);
 
  const DoubleTab& T_f = mon_dom_cl_dis->equation().inconnue().valeurs();
  DoubleTab& T_b = temperature_bord_->valeurs_au_temps(temps);
 
  const DoubleTab& flux_radiatif = pb_rayo_semi_transp().flux_radiatif(frontiere_dis().le_nom()).valeurs();
 
  int face = 0;
  int num_face;
  for (face = 0; face < nb_faces; face++)
    {
      num_face = face + ndeb;
      double eF = zvdf.dist_norm_bord(num_face);
      int elem = face_voisins(num_face, 0);
      if (elem < 0)
        elem = face_voisins(num_face, 1);
      // To avoid division by zero at the first time step:
      // double omega=1./(1.+eF*eF*d_rho*d_Cp/d_Lambda/dt);
      double omega = d_Lambda * dt / (d_Lambda * dt + eF * eF * d_rho * d_Cp);
      //      Cerr << "omega=" << omega << finl;
      if (sub_type(Champ_front_uniforme, le_champ_front.valeur()))
        {
          T_b(face, 0) = omega * (T_f(elem) + (le_champ_front->valeurs()(0, 0) - flux_radiatif(face, 0)) / (d_Lambda / eF)) + (1 - omega) * T_b(face, 0);
        }
      else
        T_b(face, 0) = omega * (T_f(elem) + (le_champ_front->valeurs()(face, 0) - flux_radiatif(face, 0)) / (d_Lambda / eF)) + (1 - omega) * T_b(face, 0);
    }
}
 
int Neumann_paroi_rayo_semi_transp_VDF::compatible_avec_eqn(const Equation_base& eqn) const
{
  Motcle dom_app = eqn.domaine_application();
  Motcle Thermique = "Thermique";
  Motcle indetermine = "indetermine";
  if ((dom_app == Thermique) || (dom_app == indetermine))
    return 1;
  else
    {
      err_pas_compatible(eqn);
      return 0;
    }
}
 
void Neumann_paroi_rayo_semi_transp_VDF::completer()
{
  Neumann_paroi::completer();
 
  // Type and dimension the boundary field temperature_bord_
  //  const Milieu_base& mil=mon_dom_cl_dis->equation().milieu();
  const Front_VF& front_vf = ref_cast(Front_VF, frontiere_dis());
  int nb_comp = 1;
  temperature_bord_.typer("Champ_front_fonc");
  temperature_bord_->fixer_nb_comp(nb_comp);
  DoubleTab& tab = temperature_bord_->valeurs();
  tab.resize(front_vf.nb_faces(), nb_comp);
 
  // Initialize the boundary temperature array to the
  // initial temperature of the current medium
  const Domaine_VDF& zvdf = ref_cast(Domaine_VDF, domaine_Cl_dis().domaine_dis());
  int ndeb = front_vf.num_premiere_face();
  const IntTab& face_voisins = zvdf.face_voisins();
  const DoubleTab& T = mon_dom_cl_dis->equation().inconnue().valeurs();
  int face = 0;
  //
  // Start of the loop over boundary faces
  //
 
  for (face = 0; face < front_vf.nb_faces(); face++)
    {
      int elem = face_voisins(face + ndeb, 0);
      if (elem < 0)
        elem = face_voisins(face + ndeb, 1);
      tab(face, 0) = T(elem);
    }
}