Loi_Etat_GP_base.cpp

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#include <Fluide_Dilatable_base.h>
#include <Champ_Fonc_Tabule.h>
#include <Loi_Etat_GP_base.h>
#include <Champ_Uniforme.h>
#include <Domaine_VF.h>
#include <Motcle.h>
 
Implemente_base_sans_constructeur(Loi_Etat_GP_base,"Loi_Etat_Gaz_Parfait_base",Loi_Etat_base);
// XD loi_etat_gaz_parfait_base loi_etat_base loi_etat_gaz_parfait_base INHERITS_BRACE Basic class for perfect gases
// XD_CONT state laws used with a dilatable fluid.
 
Loi_Etat_GP_base::Loi_Etat_GP_base() : Cp_(-1), R_(-1) { }
 
Sortie& Loi_Etat_GP_base::printOn(Sortie& os) const
{
  os <<que_suis_je()<< finl;
  return os;
}
 
Entree& Loi_Etat_GP_base::readOn(Entree& is)
{
  return is;
}
 
/*! @brief Returns the type of fluid associated.
 *
 * @return The fluid type name ("Gaz_Parfait").
 */
const Nom Loi_Etat_GP_base::type_fluide() const
{
  return "Gaz_Parfait";
}
 
/*! @brief Associates the fluid with the state law.
 *
 * @param fl The dilatable fluid to associate.
 */
void Loi_Etat_GP_base::associer_fluide(const Fluide_Dilatable_base& fl)
{
  Loi_Etat_base::associer_fluide(fl);
  le_fluide->set_Cp(Cp_);
}
 
/*! @brief Initialises the state law by computing Pth.
 *
 */
void Loi_Etat_GP_base::initialiser()
{
  const DoubleTab& tab_Temp = le_fluide->inco_chaleur().valeurs();
  const DoubleTab& tab_rho = le_fluide->masse_volumique().valeurs();
  int ntot=tab_Temp.size_totale();
  tab_rho_n=tab_Temp;
  for (int i=0 ; i<ntot ; i++)
    tab_rho_n(i) = tab_rho(i,0);
  remplir_T();
}
 
/*! @brief Fills the temperature array: T = temp + 273.15.
 *
 */
void Loi_Etat_GP_base::remplir_T()
{
  const DoubleTab& tab_Temp = le_fluide->inco_chaleur().valeurs();
  temperature_->valeurs() = tab_Temp;
}
 
/*! @brief Computes Cp. Does nothing: Cp is constant.
 *
 */
void Loi_Etat_GP_base::calculer_Cp()
{
  /* Do nothing */
}
 
/*! @brief Computes the thermal conductivity.
 *
 */
void Loi_Etat_GP_base::calculer_lambda()
{
  const Champ_Don_base& mu = le_fluide->viscosite_dynamique();
  const DoubleTab& tab_mu = mu.valeurs();
  Champ_Don_base& lambda = le_fluide->conductivite();
  DoubleTab& tab_lambda =lambda.valeurs();
  //The conductivity is either a uniform field or computed from the dynamic viscosity and Pr
  if (sub_type(Champ_Fonc_Tabule,lambda))
    {
      lambda.mettre_a_jour(temperature_->temps());
      return;
    }
 
 
 
  if (!sub_type(Champ_Uniforme,lambda))
    {
      if (sub_type(Champ_Uniforme,mu))
        {
          double mu0 = tab_mu(0,0);
          tab_lambda *= (mu0 * Cp_ / Pr_);
        }
      else
        {
          tab_lambda = tab_mu;
          tab_lambda *= Cp_ / Pr_;
        }
    }
  else
    {
      if (sub_type(Champ_Uniforme,mu))
        {
          tab_lambda(0,0) = mu.valeurs()(0,0) * Cp_ / Pr_;
        }
      else
        {
          Cerr << finl ;
          Cerr << "If lambda is of type Champ_Uniform, mu must also be of type Champ_Uniforme !"<< finl;
          Cerr << "If needed, you can use a Champ_Fonc_Fonction or a Champ_Fonc_Tabule with a constant for mu."<< finl ;
          Cerr << finl ;
          Process::exit();
        }
    }
  tab_lambda.echange_espace_virtuel();
}
 
/*! @brief Computes the thermal diffusivity.
 *
 */
void Loi_Etat_GP_base::calculer_alpha()
{
  const Champ_Don_base& champ_lambda = le_fluide->conductivite();
  const DoubleTab& tab_lambda = champ_lambda.valeurs();
  Champ_Don_base& champ_alpha = le_fluide->diffusivite();
  DoubleTab& tab_alpha = le_fluide->diffusivite().valeurs();
  const DoubleTab& tab_rho = le_fluide->masse_volumique().valeurs();
 
  int isVDF=0;
  if (champ_alpha.que_suis_je()=="Champ_Fonc_P0_VDF") isVDF = 1;
  int n=tab_alpha.size();
  bool lambda_uniforme = sub_type(Champ_Uniforme,champ_lambda);
  if (isVDF)
    {
      ToDo_Kokkos("critical");
      for (int i=0 ; i<n ; i++)
        tab_alpha(i,0) = (lambda_uniforme ? tab_lambda(0,0) : tab_lambda(i,0)) / (tab_rho(i,0) * Cp_);
    }
  else
    {
      const IntTab& tab_elem_faces = ref_cast(Domaine_VF,le_fluide->vitesse().domaine_dis_base()).elem_faces();
      int nfe = tab_elem_faces.line_size();
      double Cp = Cp_;
      CIntTabView elem_faces = tab_elem_faces.view_ro();
      CDoubleTabView lambda = tab_lambda.view_ro();
      CDoubleTabView rho = tab_rho.view_ro();
      DoubleTabView alpha = tab_alpha.view_wo();
      Kokkos::parallel_for(start_gpu_timer(__KERNEL_NAME__), n, KOKKOS_LAMBDA(
                             const int i)
      {
        double rhoelem=0;
        for (int face=0; face<nfe; face++) rhoelem += rho(elem_faces(i,face),0);
        rhoelem /= nfe;
        alpha(i,0) = (lambda_uniforme ? lambda(0,0) : lambda(i,0))/ ( rhoelem * Cp );
      });
      end_gpu_timer(__KERNEL_NAME__);
    }
  tab_alpha.echange_espace_virtuel();
}
 
/*! @brief Computes the thermodynamic pressure from temperature and density.
 *
 * @param T Temperature.
 * @param rho Density.
 * @return Thermodynamic pressure Pth = rho * R * T.
 */
double Loi_Etat_GP_base::inverser_Pth(double T, double rho)
{
  return rho * R_ * T;
}