Source_Trainee.cpp

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#include <Source_Trainee.h>
#include <Probleme_base.h>
#include <Fluide_Diphasique.h>
 
Implemente_instanciable(Source_Trainee,"Trainee",Source_Action_Particules);
 
 
Sortie& Source_Trainee::printOn(Sortie& s ) const
{
  return s << que_suis_je() ;
}
 
 
Entree& Source_Trainee::readOn(Entree& s )
{
  return s;
}
 
//L expression codee est precisee dans l entete de la classe
DoubleTab& Source_Trainee::ajouter(DoubleTab& resu) const
{
 
  const DoubleTab& vitesse_f = vitesse_fluide();
  const DoubleTab& rho_f = rho_fluide();
  const DoubleTab& visco_dyn_f = visco_dyn_fluide();
  const DoubleTab& vitesse_p = vitesse_particules();
  const DoubleTab& diametre_p = diametre_particules();
  const DoubleTab& rho_p = rho_particules();
 
  double grav = 0.;
  double sigma = 0.;
  double Cd_p, Cd_diph;
  Cd_p = 0.;
  Cd_diph = 0.;
 
  const Equation_base& eq_ns = equation().probleme().equation(0);
  const Milieu_base& mil = eq_ns.milieu();
  if (sub_type(Fluide_Diphasique,mil))
    {
      const Fluide_Diphasique& fluide = ref_cast(Fluide_Diphasique,mil);
      if (fluide.a_gravite())
        {
          const DoubleTab& gravite = fluide.gravite().valeurs();
          assert((gravite.nb_dim() == 2) && (gravite.dimension(1) == dimension));
          for (int j=0; j<dimension; j++)
            grav += gravite(0,j)*gravite(0,j);
          grav = sqrt(grav);
        }
 
      ////grav=9.81;
 
      sigma = fluide.sigma();
    }
 
  const int dim0 =  vitesse_p.dimension(0);
  const int dim1 =  vitesse_p.dimension(1);
  assert(vitesse_p.dimension(0)==vitesse_f.dimension(0));
 
  double norme_delta_v, Reynolds_p, Cd, Surface;
  using Kokkos::numbers::pi;
 
  DoubleVect deltav(Objet_U::dimension);
 
  for (int i=0; i<dim0; i++)
    {
      norme_delta_v = 0.;
      for (int j=0; j<dim1; j++)
        {
          deltav[j] = vitesse_p(i,j)-vitesse_f(i,j);
          norme_delta_v += deltav[j]*deltav[j];
        }
      norme_delta_v = sqrt(norme_delta_v);
 
      Reynolds_p = rho_f(i)*norme_delta_v*diametre_p(i,0)/visco_dyn_f(i);
      Cd_p =24/std::max(1e-12,Reynolds_p);
 
      if (sub_type(Fluide_Diphasique,mil))
        {
          Cd_diph = std::min((2./3.)*sqrt((diametre_p(i,0)*diametre_p(i,0))*grav*(std::fabs(rho_f(i)-rho_p(i,0)))/sigma),8./3.);
        }
 
      Cd = std::max(Cd_p,Cd_diph);
 
      Surface = (dim1==3?pi*diametre_p(i,0)*diametre_p(i,0)/4.:diametre_p(i,0));
 
      for (int j=0; j<dim1; j++)
        resu(i,j) += -0.5*Cd*rho_f(i)*Surface*norme_delta_v*deltav[j];
    }
 
  return resu;
}
 
 
DoubleTab& Source_Trainee::calculer(DoubleTab& resu) const
{
  resu = 0;
  return ajouter(resu);
}