Transport_turbulent_GGDH.cpp

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#include <Transport_turbulent_GGDH.h>
#include <Param.h>
#include <Probleme_base.h>
 
#include <Pb_Multiphase.h>
#include <TRUSTTrav.h>
#include <MD_Vector_tools.h>
 
Implemente_instanciable(Transport_turbulent_GGDH, "Transport_turbulent_GGDH|Transport_turbulent_anisotrope", Transport_turbulent_base);
 
Sortie& Transport_turbulent_GGDH::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Transport_turbulent_GGDH::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("C_s", &C_s);
  param.lire_avec_accolades_depuis(is);
 
  if ((C_s <0) && (dimension == 2)) C_s = 1;
  if ((C_s <0) && (dimension == 3)) C_s = 1.5;
 
  return is;
}
 
void Transport_turbulent_GGDH::modifier_mu(const Convection_Diffusion_std& eq, const Viscosite_turbulente_base& visc_turb, DoubleTab& nu) const
{
  const DoubleTab& mu0 = eq.diffusivite_pour_transport().passe(), &nu0 = eq.diffusivite_pour_pas_de_temps().passe(), //molecular viscosities
                   *alp = sub_type(Pb_Multiphase, pb_.valeur()) ? &pb_->get_champ("alpha").passe() : nullptr; //multiplied by alpha if Pb_Multiphase
  int i, nl = nu.dimension(0), n, N = nu.dimension(1), d, db, D = dimension;
  //using turbulent viscosity: Reynolds stress tensor, factor k / eps
  DoubleTrav Rij(0, N, D, D), k_sur_eps(0, N);
  MD_Vector_tools::creer_tableau_distribue(nu.get_md_vector(), Rij);
  MD_Vector_tools::creer_tableau_distribue(nu.get_md_vector(), k_sur_eps);
  visc_turb.reynolds_stress(Rij), visc_turb.k_over_eps(k_sur_eps);
  //formula to convert nu to mu: mu0 / nu0 * C_s * k / eps * <u'i u'_j>
  for (i = 0; i < nl; i++)
    for (n = 0; n < N; n++)
      for (d = 0; d < D; d++)
        for (db = 0; db < D; db++)
          nu(i, n, d, db) += (alp ? (*alp)(i, n) : 1) * mu0(i, n) / nu0(i, n) * C_s * std::max(k_sur_eps(i, n) * Rij(i, n, d, db), visc_turb.limiteur() * nu(i, n, d, db));
}