Milieu_Incompressible_Phase_Field.cpp

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#include <Milieu_Incompressible_Phase_Field.h>
#include <Pb_Cahn_Hilliard.h>
#include <Cahn_Hilliard.h>
#include <Discret_Thyd.h>
#include <Fermeture_Thermo_base.h>
#include <EChaine.h>
#include <Param.h>
#include <Champ_Uniforme.h>
 
Implemente_instanciable(Milieu_Incompressible_Phase_Field, "Milieu_Incompressible_Phase_Field", Fluide_Incompressible);
 
Sortie& Milieu_Incompressible_Phase_Field::printOn(Sortie& os) const
{
  return os << que_suis_je() << " " << le_nom() << finl;
}
 
Entree& Milieu_Incompressible_Phase_Field::readOn(Entree& is)
{
  return Fluide_Incompressible::readOn(is);
}
 
void Milieu_Incompressible_Phase_Field::set_param(Param& param) const
{
  Fluide_Incompressible::set_param(param);
  param.ajouter("Fermeture|Closure", &fermeture_, Param::REQUIRED);
  param.ajouter_non_std("mu_coefficients", (this), Param::OPTIONAL);
}
 
int Milieu_Incompressible_Phase_Field::lire_motcle_non_standard(const Motcle& mot, Entree& is)
{
  if (mot == "mu_coefficients")
    {
      int nb = fermeture_->nb_parametres_d_ordre();
      assert(nb > -1);
      mu_coefficients_.resize(nb+1);
      for (int i = 0; i <= nb; i++)
        is >> mu_coefficients_(i);
      return 1;
    }
  else
    return Fluide_Incompressible::lire_motcle_non_standard(mot, is);
}
 
 
void Milieu_Incompressible_Phase_Field::discretiser(const Probleme_base& pb, const Discretisation_base& dis)
{
  if (ch_mu_ && mu_coefficients_.size() > 0) // ch_mu_ needs to be discretized in this case because it will be update from mu_coefficients and c (the concentration variable in Chan-Hilliard equation)
    {
      dis.discretiser_champ("CHAMP_ELEM", pb.domaine_dis(), "viscosite_dynamique", "kg/m/s", 1, 0., ch_mu_);
    }
  Fluide_Incompressible::discretiser(pb, dis);
  if (!rho_ && has_beta_c())
    {
      dis.discretiser_champ("CHAMP_ELEM", pb.domaine_dis(), "masse_volumique", "kg/m3", 1, 0., rho_);
      champs_compris_.ajoute_champ(rho_);
    }
}
 
 
int Milieu_Incompressible_Phase_Field::initialiser(const double temps)
{
  Fluide_Incompressible::initialiser(temps);
  if (rho_)
    {
      rho_->initialiser(temps);
      calculer_rho(true);
    }
  if (ch_mu_ && mu_coefficients_.size() > 0)
    {
      calculer_mu(true);
      calculer_nu();
      ch_nu_->changer_temps(temps);
      ch_nu_->valeurs().echange_espace_virtuel();
    }
  return 1;
}
 
void Milieu_Incompressible_Phase_Field::mettre_a_jour(double temps)
{
  Fluide_Incompressible::mettre_a_jour(temps);
  if (rho_)
    {
      calculer_rho();
      rho_->changer_temps(temps);
    }
  if (ch_mu_ && mu_coefficients_.size() > 0)
    {
      calculer_mu();
      calculer_nu();
      ch_nu_->changer_temps(temps);
      ch_nu_->valeurs().echange_espace_virtuel();
    }
}
 
 
void Milieu_Incompressible_Phase_Field::calculer_rho(const bool init)
{
  const Equation_base& eq = equation("concentration");
  int i = (init) ? 0 : 1;
  const DoubleTab& beta_co = beta_c().valeurs();
  const DoubleTab& c = eq.inconnue().futur(i);
  const int nb_elem = c.dimension(0);
  const int nb_param = c.line_size();
  DoubleTab& rhoTab = rho_->valeurs();
  rhoTab = 1.;
  // rho = rho0 * ( 1 + sum_j beta_j c_j )
  for (i = 0; i < nb_elem; i++)
    {
      int ib = sub_type(Champ_Uniforme, beta_c()) ? 0 : i;
      for (int j = 0; j < nb_param; j++)
        {
          rhoTab(i) += beta_co(ib, j) * c(i, j);
        }
    }
  tab_multiply_any_shape(rhoTab, ch_rho_->valeurs());
  rhoTab.echange_espace_virtuel();
}
 
void Milieu_Incompressible_Phase_Field::calculer_mu(const bool init)
{
  const Equation_base& eq = equation("concentration");
  int i = (init) ? 0 : 1;
  const DoubleTab& c = eq.inconnue().futur(i);
  const int nb_elem = c.dimension(0);
  const int nb_param = c.line_size();
  DoubleTab& muTab = ch_mu_->valeurs();
  muTab = 1./mu_coefficients_(nb_param);
  //
  for (i = 0; i < nb_elem; i++)
    {
      for (int j = 0; j < nb_param; j++)
        {
          muTab(i) += c(i, j) * (1./mu_coefficients_(j) - 1./mu_coefficients_(nb_param));
        }
      muTab(i) = 1./muTab(i);
    }
  ch_mu_->valeurs().echange_espace_virtuel();
}