Reynolds_maille_Champ_Face.cpp

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#include <Reynolds_maille_Champ_Face.h>
#include <Champ_Face_VDF.h>
 
#include <Domaine_VDF.h>
 
Implemente_instanciable(Reynolds_maille_Champ_Face, "Reynolds_maille_Champ_Face", Champ_Fonc_Face_VDF);
 
Sortie& Reynolds_maille_Champ_Face::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Reynolds_maille_Champ_Face::readOn(Entree& s) { return s; }
 
void Reynolds_maille_Champ_Face::associer_champ(const Champ_Face_VDF& la_vitesse, const Champ_Don_base& la_viscosite_cinematique)
{
  vitesse_ = la_vitesse;
  nu_ = la_viscosite_cinematique;
}
 
// 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), elem1 = le_dom_VDF.face_voisins(face, 1);
      if (elem0 < 0) elem0 = elem1; // face frontiere
      if (elem1 < 0) elem1 = elem0; // face frontiere
      return 0.5 * (champ(elem0, compo) + champ(elem1, compo));
    }
}
 
void Reynolds_maille_Champ_Face::mettre_a_jour(double tps)
{
  const int nb_faces = domaine_vdf().nb_faces();
  DoubleTab& re = valeurs(); // Reynolds de maille
  for (int face = 0; face < nb_faces; face++)
    {
      // Calcul de la viscosite face
      double nu_face = valeur(nu_->valeurs(), face, 0, domaine_vdf());
      // Calcul de la taille de maille entourant la face
      double taille_maille = domaine_vdf().volumes_entrelaces()(face) / domaine_vdf().face_surfaces(face);
      // Calcul du Reynolds de maille
      re(face) = std::fabs(vitesse_->valeurs()(face)) * taille_maille / nu_face; // Reynolds_maille = |Uface| * taille_maille / nu_face
    }
 
  changer_temps(tps);
  Champ_Fonc_base::mettre_a_jour(tps);
}