Modele_turbulence_hyd_LES_1elt_VEF.cpp

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#include <Modele_turbulence_hyd_LES_1elt_VEF.h>
#include <Schema_Temps_base.h>
#include <Equation_base.h>
#include <Domaine_VEF.h>
#include <Debog.h>
 
Implemente_instanciable(Modele_turbulence_hyd_LES_1elt_VEF, "Modele_turbulence_hyd_sous_maille_1elt_VEF", Modele_turbulence_hyd_LES_VEF_base);
 
Sortie& Modele_turbulence_hyd_LES_1elt_VEF::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Modele_turbulence_hyd_LES_1elt_VEF::readOn(Entree& s) { return Modele_turbulence_hyd_LES_VEF_base::readOn(s); }
 
Champ_Fonc_base& Modele_turbulence_hyd_LES_1elt_VEF::calculer_viscosite_turbulente()
{
  const Domaine_VEF& domaine_VEF = ref_cast(Domaine_VEF, le_dom_VF_.valeur());
  double temps = mon_equation_->inconnue().temps();
  DoubleTab& visco_turb = la_viscosite_turbulente_->valeurs();
  const int nb_elem = domaine_VEF.nb_elem();
  int num_elem;
 
  F2_.resize(nb_elem);
 
  calculer_fonction_structure();
 
  if (visco_turb.size() != nb_elem)
    {
      Cerr << "Size error for the array containing the values of the turbulent viscosity." << finl;
      Process::exit();
    }
  visco_turb = 0.;
 
  Debog::verifier("Modele_turbulence_hyd_LES_1elt_VEF::calculer_viscosite_turbulente visco_turb 0", visco_turb);
  for (num_elem = 0; num_elem < nb_elem; num_elem++)
    visco_turb(num_elem) = Csm1_ * l_[num_elem] * sqrt(F2_(num_elem));
 
  Debog::verifier("Modele_turbulence_hyd_LES_1elt_VEF::calculer_viscosite_turbulente visco_turb 1", visco_turb);
 
  la_viscosite_turbulente_->changer_temps(temps);
  return la_viscosite_turbulente_;
}
 
void Modele_turbulence_hyd_LES_1elt_VEF::calculer_fonction_structure()
{
  const DoubleTab& la_vitesse = mon_equation_->inconnue().valeurs();
  const Domaine_VEF& domaine_VEF = ref_cast(Domaine_VEF, le_dom_VF_.valeur());
  const int nb_elem = domaine_VEF.nb_elem();
  const IntTab& elem_faces = domaine_VEF.elem_faces();
  const DoubleTab& xv = domaine_VEF.xv();
  const DoubleTab& xp = domaine_VEF.xp();
  const Domaine& domaine = domaine_VEF.domaine();
  int nfac = domaine.nb_faces_elem();
 
  int num_elem, num_face, i;
  double vit_x_elem, vit_y_elem, vit_z_elem;
  double dist, F2_int1, F2_int2, delta_c_val, dist1;
  static double un_tiers = 1. / 3.;
  double delta_c_calc;
 
  for (num_elem = 0; num_elem < nb_elem; num_elem++)
    {
      delta_c_val = l_[num_elem];
      // Vitesse au centre de gravite
      vit_x_elem = 0.;
      vit_y_elem = 0.;
      vit_z_elem = 0.;
      dist1 = 0;
      delta_c_calc = 0.;
      for (i = 0; i < nfac; i++)
        {
          num_face = elem_faces(num_elem, i);
          vit_x_elem += la_vitesse(num_face, 0);
          vit_y_elem += la_vitesse(num_face, 1);
          vit_z_elem += la_vitesse(num_face, 2);
          dist1 = (xp(num_elem, 0) - xv(num_face, 0)) * (xp(num_elem, 0) - xv(num_face, 0));
          dist1 += (xp(num_elem, 1) - xv(num_face, 1)) * (xp(num_elem, 1) - xv(num_face, 1));
          dist1 += (xp(num_elem, 2) - xv(num_face, 2)) * (xp(num_elem, 2) - xv(num_face, 2));
          delta_c_calc = std::min(delta_c_calc, dist1);
        }
      vit_x_elem /= (nfac * 1.);
      vit_y_elem /= (nfac * 1.);
      vit_z_elem /= (nfac * 1.);
 
      // fonction de structure
      F2_int2 = 0.;
      for (i = 0; i < nfac; i++)
        {
          num_face = elem_faces(num_elem, i);
 
          dist = (xp(num_elem, 0) - xv(num_face, 0)) * (xp(num_elem, 0) - xv(num_face, 0));
          dist += (xp(num_elem, 1) - xv(num_face, 1)) * (xp(num_elem, 1) - xv(num_face, 1));
          dist += (xp(num_elem, 2) - xv(num_face, 2)) * (xp(num_elem, 2) - xv(num_face, 2));
 
          dist = 1. / dist;
          dist *= (delta_c_val * delta_c_val);
          dist = exp(un_tiers * log(dist));
 
          F2_int1 = (vit_x_elem - la_vitesse(num_face, 0)) * (vit_x_elem - la_vitesse(num_face, 0));
          F2_int1 += (vit_y_elem - la_vitesse(num_face, 1)) * (vit_y_elem - la_vitesse(num_face, 1));
          F2_int1 += (vit_z_elem - la_vitesse(num_face, 2)) * (vit_z_elem - la_vitesse(num_face, 2));
          F2_int2 += F2_int1 * dist;
        }
      F2_(num_elem) = F2_int2 / nfac;
    }
}