Energie_cinetique_turbulente.cpp

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#include <Energie_cinetique_turbulente.h>
#include <EcritureLectureSpecial.h>
#include <Scalaire_impose_paroi.h>
#include <Champ_Face_PolyMAC_MPFA.h>
#include <Echange_global_impose.h>
#include <Schema_Implicite_base.h>
#include <Neumann_sortie_libre.h>
#include <Op_Conv_negligeable.h>
#include <Frontiere_dis_base.h>
#include <Navier_Stokes_std.h>
#include <Champ_Uniforme.h>
#include <Matrice_Morse.h>
#include <Neumann_paroi.h>
#include <Probleme_base.h>
#include <Discret_Thyd.h>
#include <Domaine_VF.h>
#include <TRUSTTrav.h>
#include <EChaine.h>
#include <Domaine.h>
#include <Avanc.h>
#include <Param.h>
#include <Debog.h>
#include <SETS.h>
 
Implemente_instanciable(Energie_cinetique_turbulente,
                        "Energie_cinetique_turbulente",
                        Convection_diffusion_turbulence_multiphase);
 
Sortie& Energie_cinetique_turbulente::printOn(Sortie& is) const
{
  return Convection_diffusion_turbulence_multiphase::printOn(is);
}
 
Entree& Energie_cinetique_turbulente::readOn(Entree& is)
{
  Convection_diffusion_turbulence_multiphase::readOn(is);
  terme_convectif.set_fichier("Convection_energie_cinetique_turbulente");
  terme_convectif.set_description((Nom)"Turbulent kinetic energy transfer rate=Integral(-rho*k*ndS) [W] if SI units used");
  terme_diffusif.set_fichier("Diffusion_energie_cinetique_turbulente");
  terme_diffusif.set_description((Nom)"Turbulent kinetic energy transfer rate=Integral(mu*grad(k)*ndS) [W] if SI units used");
  return is;
}
void Energie_cinetique_turbulente::set_param(Param& param) const
{
  Convection_diffusion_turbulence_multiphase::set_param(param);
  param.ajouter("limit_coef", &coef_limit_); // X_D attr limit_coef flottant limit_coef 1 Coefficient of the limiter (min (K, coef * v^2)). Default value of coef is set to 0.1
  param.ajouter_flag("limit_K", &limit_k_); // X_D attr limit_K entier limit_K 1 Flag to activate the limiter on K. Default value is 0 (deactivated)
}
 
const Champ_Don_base& Energie_cinetique_turbulente::diffusivite_pour_transport() const
{
  return ref_cast(Fluide_base, milieu()).viscosite_cinematique();
}
 
const Champ_base& Energie_cinetique_turbulente::diffusivite_pour_pas_de_temps() const
{
  return ref_cast(Fluide_base, milieu()).viscosite_cinematique();
}
 
void Energie_cinetique_turbulente::discretiser()
{
  const int nb_valeurs_temp = schema_temps().nb_valeurs_temporelles();
  const double temps = schema_temps().temps_courant();
  const Discret_Thyd& dis = ref_cast(Discret_Thyd, discretisation());
  Cerr << "Turbulent kinetic energy discretization" << finl;
  //On utilise temperature pour la directive car discretisation identique
  dis.discretiser_champ("temperature", domaine_dis(), "k", "J/kg", 1,
                        nb_valeurs_temp, temps, l_inco_ch);//une seule compo, meme en multiphase
  l_inco_ch->fixer_nature_du_champ(scalaire);
  l_inco_ch->fixer_nom_compo(0, Nom("k"));
  champs_compris_.ajoute_champ(l_inco_ch);
  Equation_base::discretiser();
  Cerr << "Energie_cinetique_turbulente::discretiser() ok" << finl;
}
 
void Energie_cinetique_turbulente::mettre_a_jour(double temps)
{
  // XXX : appel a la classe mere
  Convection_diffusion_turbulence_multiphase::mettre_a_jour(temps);
 
  const Navier_Stokes_std& eqv = ref_cast(Navier_Stokes_std, probleme().equation(0));
 
  if (probleme().discretisation().is_PolyMAC_MPFA() && limit_k_)
    if ( temps > schema_temps().temps_courant() && coef_limit_ > 0 )
      {
        Cerr << "Limiting the value of K : coeff used = " << coef_limit_ << finl;
        const Champ_Face_PolyMAC_MPFA& ch_vit = ref_cast(Champ_Face_PolyMAC_MPFA, eqv.vitesse());
        const Domaine_PolyMAC_MPFA& domaine = ref_cast(Domaine_PolyMAC_MPFA, domaine_dis());
        DoubleTab& k_val = inconnue().valeurs();
        const int N = k_val.line_size(), D = dimension;
 
        for (int e = 0; e < domaine.nb_elem(); e++)
          for (int n = 0; n < N; n++)
            {
              double norm_v2 = 0;
              for (int d = 0 ; d < D ; d++)
                norm_v2 += ch_vit.passe()(e, N*d + n);
              k_val(e, n) = std::min(k_val(e, n), coef_limit_*norm_v2);
            }
        k_val.echange_espace_virtuel();
        inconnue().passe() = k_val;
      }
}
 
void Energie_cinetique_turbulente::calculer_alpha_rho_k(const Objet_U& obj, DoubleTab& val, DoubleTab& bval, tabs_t& deriv)
{
  /*
    Nota: this function used to compute alpha*rho*k but now it computes only k.
   */
  const Equation_base& eqn = ref_cast(Equation_base, obj);
 
  /*  const Fluide_base& fl = ref_cast(Fluide_base, eqn.milieu());
    const Champ_base& ch_rho = fl.masse_volumique();
    const Champ_Inc_base *ch_alpha = sub_type(Pb_Multiphase, eqn.probleme()) ? &ref_cast(Pb_Multiphase, eqn.probleme()).equation_masse().inconnue() : nullptr,
                          *pch_rho = sub_type(Champ_Inc_base, ch_rho) ? &ref_cast(Champ_Inc_base, ch_rho) : nullptr; //pas toujours un Champ_Inc
    const DoubleTab* alpha = ch_alpha ? &ch_alpha->valeurs() : nullptr, &rho = ch_rho.valeurs(), &k = eqn.inconnue().valeurs();
  */
 
  /* valeurs du champ */
  const DoubleTab& k = eqn.inconnue().valeurs();
  const int N = val.line_size();
  const int Nl = val.dimension_tot(0);
  for (int i = 0; i < Nl; i++)
    for (int n = 0; n < N; n++)
      val(i, n) = k(i, n);
 
  /* on ne peut utiliser valeur_aux_bords que si ch_rho a un domaine_dis_base */
  const DoubleTab& b_k = eqn.inconnue().valeur_aux_bords();
  const int Nb = b_k.dimension_tot(0);
  for (int i = 0; i < Nb; i++)
    for (int n = 0; n < N; n++) bval(i, n) = b_k(i, n);
 
  //derivee en k : 1.
  DoubleTab& d_k = deriv["k"];
  d_k.resize(Nl, N);
  for (int i = 0; i < Nl; i++)
    for (int n = 0; n < N; n++)
      d_k(i, n) = 1.;
}