Courant_maille_Champ_Face.cpp

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#include <Courant_maille_Champ_Face.h>
#include <Schema_Temps_base.h>
#include <Champ_Face_VDF.h>
#include <Domaine_VDF.h>
 
Implemente_instanciable(Courant_maille_Champ_Face,"Courant_maille_Champ_Face",Champ_Fonc_Face_VDF);
 
Sortie& Courant_maille_Champ_Face::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Courant_maille_Champ_Face::readOn(Entree& s) { return s ; }
 
void Courant_maille_Champ_Face::associer_champ(const Champ_Face_VDF& la_vitesse, const Schema_Temps_base& sch)
{
  vitesse_ = la_vitesse;
  sch_ = sch;
}
 
// XXX : Elie Saikali : pas utilise ... commente
// Methode de calcul de la valeur sur une face d'un champ uniforme ou non a plusieurs composantes
//inline double valeur(const DoubleTab &champ, const int face, const int compo, const Domaine_VDF &le_dom_VDF)
//{
//  if (champ.dimension(0) == 1) return champ(0, compo); // Champ uniforme
//  else
//    {
//      int elem0 = le_dom_VDF.face_voisins(face, 0);
//      int elem1 = le_dom_VDF.face_voisins(face, 1);
//      if (elem1 < 0) elem1 = elem0; // face frontiere
//      return 0.5 * (champ(elem0, compo) + champ(elem1, compo));
//    }
//}
 
void Courant_maille_Champ_Face::mettre_a_jour(double tps)
{
  const int nb_faces = domaine_vdf().nb_faces();
  DoubleTab& co = valeurs(); // Courant de maille
  double dt = sch_->pas_de_temps();
  for (int face = 0; face < nb_faces; face++)
    {
      // Calcul de la taille de maille entourant la face
      double taille_maille = domaine_vdf().volumes_entrelaces()(face) / domaine_vdf().face_surfaces(face);
      // Calcul du Courant de maille
      co(face) = std::fabs(vitesse_->valeurs()(face)) * dt / taille_maille; // Courant_maille = |Uface| * dt / taille_maille
    }
 
  changer_temps(tps);
  Champ_Fonc_base::mettre_a_jour(tps);
}