Modele_turbulence_hyd_LES_Fst_VEF.cpp

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#include <Modele_turbulence_hyd_LES_Fst_VEF.h>
#include <Schema_Temps_base.h>
#include <Domaine_Cl_VEF.h>
#include <Domaine_VEF.h>
#include <Champ_P1NC.h>
#include <TRUSTTrav.h>
#include <Debog.h>
 
Implemente_instanciable_sans_constructeur(Modele_turbulence_hyd_LES_Fst_VEF, "Modele_turbulence_hyd_sous_maille_fst_VEF", Modele_turbulence_hyd_LES_VEF_base);
 
Modele_turbulence_hyd_LES_Fst_VEF::Modele_turbulence_hyd_LES_Fst_VEF()
{
  C1_ = 0.777 * 0.18247 * 0.18247;
}
 
Sortie& Modele_turbulence_hyd_LES_Fst_VEF::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Modele_turbulence_hyd_LES_Fst_VEF::readOn(Entree& is) { return Modele_turbulence_hyd_LES_VEF_base::readOn(is); }
 
Champ_Fonc_base& Modele_turbulence_hyd_LES_Fst_VEF::calculer_viscosite_turbulente()
{
  const Domaine_VEF& domaine_VEF = ref_cast(Domaine_VEF, le_dom_VF_.valeur());
  const int nb_elem_tot = domaine_VEF.nb_elem_tot();
  double temps = mon_equation_->inconnue().temps();
  DoubleTab& visco_turb = la_viscosite_turbulente_->valeurs();
  const int nb_elem = domaine_VEF.nb_elem();
 
  Racine_.resize(nb_elem_tot);
 
  calculer_racine();
 
  if (visco_turb.size() != nb_elem)
    {
      Cerr << "Size error for the array containing the values of the turbulent viscosity." << finl;
      Process::exit();
    }
 
  Debog::verifier("Modele_turbulence_hyd_LES_Fst_VEF::calculer_viscosite_turbulente visco_turb 0", visco_turb);
 
  for (int elem = 0; elem < nb_elem; elem++)
    visco_turb(elem) = C1_ * l_(elem) * l_(elem) * sqrt(Racine_[elem]);
 
  Debog::verifier("Modele_turbulence_hyd_LES_Fst_VEF::calculer_viscosite_turbulente visco_turb 1", visco_turb);
 
  la_viscosite_turbulente_->changer_temps(temps);
  return la_viscosite_turbulente_;
}
 
void Modele_turbulence_hyd_LES_Fst_VEF::calculer_racine()
{
  const DoubleTab& la_vitesse = mon_equation_->inconnue().valeurs();
  const Domaine_Cl_VEF& domaine_Cl_VEF = ref_cast(Domaine_Cl_VEF, le_dom_Cl_.valeur());
  const Domaine_VEF& domaine_VEF = ref_cast(Domaine_VEF, le_dom_VF_.valeur());
  const int nb_elem = domaine_VEF.nb_elem();
  const int nb_elem_tot = domaine_VEF.nb_elem_tot();
  const DoubleVect& vol = domaine_VEF.volumes();
 
  DoubleTab Sij(nb_elem_tot, dimension, dimension);
 
  // MAINTENANT : on prend la racine cubique du volume
 
  for (int elem = 0; elem < nb_elem; elem++)
    l_(elem) = exp(log(vol[elem]) / double(dimension));
 
  DoubleTab duidxj(nb_elem, dimension, dimension);
  Champ_P1NC::calcul_gradient(la_vitesse, duidxj, domaine_Cl_VEF);
 
  for (int elem = 0; elem < nb_elem_tot; elem++)
    for (int i = 0; i < dimension; i++)
      for (int j = 0; j < dimension; j++)
        Sij(elem, i, j) = 0.5 * (duidxj(elem, i, j) + duidxj(elem, j, i));
 
  DoubleTrav vorticite(nb_elem, dimension);
  vorticite = 0;
  Champ_P1NC& vit = ref_cast(Champ_P1NC, mon_equation_->inconnue());
  vit.cal_rot_ordre1(vorticite);
 
  // On calcule Racine
  for (int elem = 0; elem < nb_elem; elem++)
    {
      double temp = 0.;
      for (int i = 0; i < dimension; i++)
        {
          for (int j = 0; j < dimension; j++)
            temp += 2. * Sij(elem, i, j) * Sij(elem, i, j);
 
          temp += vorticite(elem, i) * vorticite(elem, i);
        }
      Racine_(elem) = temp;
    }
}