Source_Dissipation_HZDR_PolyMAC_MPFA.cpp

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#include <Source_Dissipation_HZDR_PolyMAC_MPFA.h>
 
#include <Champ_Elem_PolyMAC_MPFA.h>
#include <Domaine_PolyMAC_MPFA.h>
#include <Sources_helpers_Multiphase.h>
 
Implemente_instanciable(Source_Dissipation_HZDR_PolyMAC_MPFA,"Source_Dissipation_HZDR_Elem_PolyMAC_MPFA", Source_base);
// XD Source_Dissipation_HZDR source_base Source_Dissipation_HZDR INHERITS_BRACE Additional source terms in the
// XD_CONT turbulent dissipation (omega) equation to model the fluctuations induced by bubbles.
 
Sortie& Source_Dissipation_HZDR_PolyMAC_MPFA::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Source_Dissipation_HZDR_PolyMAC_MPFA::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("constante_gravitation", &g_); // XD_ADD_P floattant
  // XD_CONT not_set
  param.ajouter("C_k", &C_k_); // XD_ADD_P floattant
  // XD_CONT not_set
  param.ajouter("C_epsilon", &C_epsilon_); // XD_ADD_P floattant
  // XD_CONT not_set
  param.lire_avec_accolades_depuis(is);
 
  n_l_ = find_liquid_phase(ref_cast(Pb_Multiphase, equation().probleme()), que_suis_je());
 
  return is;
}
 
void Source_Dissipation_HZDR_PolyMAC_MPFA::dimensionner_blocs(matrices_t matrices, const tabs_t& semi_impl) const
{
// empty : no derivative to add in the blocks
}
 
void Source_Dissipation_HZDR_PolyMAC_MPFA::ajouter_blocs(matrices_t matrices, DoubleTab& secmem, const tabs_t& semi_impl) const
{
  // le terme de dissipation s'écrit : C_epsilon / (C_nu * d_b * sqrt(k)) Prod_HZDR ; avec Prod_HZDR = C_k * (3/4 C_drag/d_b * alpha * rho_l * |u_r|**3) / (alpha_l * rho_l)
  // Le coefficient de trainée C_drag sera calculé avec le modèle de Tomiyama (codé en dur)
 
  const Domaine_PolyMAC_MPFA& domaine = ref_cast(Domaine_PolyMAC_MPFA, equation().domaine_dis());
  const DoubleTab& tab_rho = equation().probleme().get_champ("masse_volumique").passe();
  const DoubleTab& tab_alp = equation().probleme().get_champ("alpha").passe();
  const DoubleTab& vit = equation().probleme().get_champ("vitesse").passe();
  const DoubleTab& diam = equation().probleme().get_champ("diametre_bulles").valeurs();
  const DoubleTab& nu = equation().probleme().get_champ("viscosite_cinematique").passe();
  const Champ_Elem_PolyMAC_MPFA& ch_k = ref_cast(Champ_Elem_PolyMAC_MPFA, equation().probleme().get_champ("k")); // Champ k
  const DoubleTab& k_passe = ch_k.passe();
 
  const DoubleVect& pe = equation().milieu().porosite_elem();
  const DoubleVect& ve = domaine.volumes();
  const int N = ref_cast(Pb_Multiphase, equation().probleme()).nb_phases();
  const int ne = domaine.nb_elem();
  const int nf_tot = domaine.nb_faces_tot();
  const int D = dimension;
 
  // Surface tension table
  const Milieu_composite& milc = ref_cast(Milieu_composite, equation().milieu());
  const DoubleTab& press = equation().probleme().get_champ("pression").passe();
  const DoubleTab& temp  = equation().probleme().get_champ("temperature").passe();
  const int nb_max_sat = N * (N - 1) / 2;
  DoubleTrav Sigma_tab(ne, nb_max_sat);
  compute_sigma_table(milc, press, temp, ne, N, Sigma_tab);
 
  // Diss_HZDR = C_epsilon / (C_mu * d_b * sqrt(k)) * Prod_HZDR
  for (int e = 0 ; e < ne ; e++)
    for (int k = 0 ; k < N ; k++)
      if (k != n_l_)
        {
          const double u_r = relative_velocity_norm(vit, nf_tot, D, e, k, n_l_);
          const double Reb = diam(e, k) * u_r / nu(e, n_l_);
          const double Eo = g_ * std::abs(tab_rho(e, n_l_) - tab_rho(e, k)) * diam(e, k) * diam(e, k) / Sigma_tab(e, sigma_pair_index(k, n_l_, N));
          const double Cd = Tomiyama_Cd(Reb, Eo);
          const double prod_HZDR = C_k_ * (3. / 4.) * Cd / diam(e, k) * tab_alp(e, k) / tab_alp(e, n_l_) * u_r * u_r * u_r;
          secmem(e, n_l_) += ve(e) * pe(e) * C_epsilon_ / C_mu_ / diam(e, k) / std::sqrt(k_passe(e, n_l_)) * prod_HZDR;
        }
}