Modele_turbulence_hyd_LES_Smago_VDF.cpp

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#include <Modele_turbulence_hyd_LES_Smago_VDF.h>
#include <Schema_Temps_base.h>
#include <Champ_Face_VDF.h>
#include <Domaine_Cl_VDF.h>
#include <Equation_base.h>
#include <Domaine_VDF.h>
#include <Param.h>
#include <Debog.h>
 
Implemente_instanciable(Modele_turbulence_hyd_LES_Smago_VDF, "Modele_turbulence_hyd_sous_maille_Smago_VDF", Modele_turbulence_hyd_LES_VDF_base);
 
// XD sous_maille_smago mod_turb_hyd_ss_maille sous_maille_smago INHERITS_BRACE Smagorinsky sub-grid turbulence model.
// XD_CONT NL2 Nut=Cs1*Cs1*l*l*sqrt(2*S*S) NL2 K=Cs2*Cs2*l*l*2*S
 
Sortie& Modele_turbulence_hyd_LES_Smago_VDF::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Modele_turbulence_hyd_LES_Smago_VDF::readOn(Entree& is) { return Modele_turbulence_hyd_LES_VDF_base::readOn(is); }
 
void Modele_turbulence_hyd_LES_Smago_VDF::set_param(Param& param) const
{
  Modele_turbulence_hyd_LES_VDF_base::set_param(param);
  param.ajouter("cs", &cs_); // XD_ADD_P floattant
  // XD_CONT This is an optional keyword and the value is used to set the constant used in the Smagorinsky model (This
  // XD_CONT is currently only valid for Smagorinsky models and it is set to 0.18 by default) .
 
  param.ajouter_condition("value_of_cs_ge_0", "sous_maille_smago model constant must be positive.");
}
 
Champ_Fonc_base& Modele_turbulence_hyd_LES_Smago_VDF::calculer_viscosite_turbulente()
{
  const Domaine_VDF& domaine_VDF = ref_cast(Domaine_VDF, le_dom_VF_.valeur());
  double temps = mon_equation_->inconnue().temps();
  DoubleTab& visco_turb = la_viscosite_turbulente_->valeurs();
  int nb_elem = domaine_VDF.domaine().nb_elem();
  const int nb_elem_tot = domaine_VDF.nb_elem_tot();
 
  SMA_barre_.resize(nb_elem_tot);
  calculer_S_barre();
  if (visco_turb.size() != nb_elem)
    {
      Cerr << "Size error for the array containing the values of the turbulent viscosity." << finl;
      exit();
    }
 
  Debog::verifier("Modele_turbulence_hyd_LES_Smago_VDF::calculer_viscosite_turbulente visco_turb 0", visco_turb);
 
  for (int elem = 0; elem < nb_elem; elem++)
    visco_turb[elem] = cs_ * cs_ * l_(elem) * l_(elem) * sqrt(SMA_barre_(elem));
 
  Debog::verifier("Modele_turbulence_hyd_LES_Smago_VDF::calculer_viscosite_turbulente visco_turb 1", visco_turb);
 
  la_viscosite_turbulente_->changer_temps(temps);
  return la_viscosite_turbulente_;
}
 
void Modele_turbulence_hyd_LES_Smago_VDF::calculer_S_barre()
{
  Champ_Face_VDF& vit = ref_cast(Champ_Face_VDF, mon_equation_->inconnue());
  const DoubleTab& vitesse = mon_equation_->inconnue().valeurs();
  const Domaine_Cl_VDF& domaine_Cl_VDF = ref_cast(Domaine_Cl_VDF, le_dom_Cl_.valeur());
  const Domaine_VDF& domaine_VDF = ref_cast(Domaine_VDF, le_dom_VF_.valeur());
  const int nb_elem_tot = domaine_VDF.nb_elem_tot();
 
  int i, j;
  int elem;
  //DoubleTab psc(dimension,dimension);
 
  assert(vitesse.line_size() == 1);
  DoubleTab duidxj(nb_elem_tot, dimension, dimension, vitesse.line_size());
 
  vit.calcul_duidxj(vitesse, duidxj, domaine_Cl_VDF);
 
  double Sij, temp;
  for (elem = 0; elem < nb_elem_tot; elem++)
    {
      temp = 0.;
      for (i = 0; i < dimension; i++)
        for (j = 0; j < dimension; j++)
          //Shifted computation of Sij
          {
            Sij = 0.5 * (duidxj(elem, i, j, 0) + duidxj(elem, j, i, 0));
            temp += Sij * Sij;
          }
      SMA_barre_(elem) = 2. * temp;
    }
}