Frottement_interfacial_bulles_constant.cpp

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#include <Frottement_interfacial_bulles_constant.h>
#include <Pb_Multiphase.h>
#include <TRUSTTab.h>
#include <Milieu_MUSIG.h>
 
Implemente_instanciable(Frottement_interfacial_bulles_constant, "Frottement_interfacial_bulles_constant", Frottement_interfacial_base);
 
Sortie& Frottement_interfacial_bulles_constant::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Frottement_interfacial_bulles_constant::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("coeff_derive", &C_d_, Param::REQUIRED);
  param.ajouter("rayon_bulle", &r_bulle_);
  param.lire_avec_accolades_depuis(is);
 
  const Pb_Multiphase *pbm = sub_type(Pb_Multiphase, pb_.valeur()) ? &ref_cast(Pb_Multiphase, pb_.valeur()) : nullptr;
 
  if (!pbm || pbm->nb_phases() == 1) Process::exit(que_suis_je() + " : not needed for single-phase flow!");
 
  for (int n = 0; n < pbm->nb_phases(); n++) //recherche de n_l, n_g : phase {liquide,gaz}_continu en priorite
    if (pbm->nom_phase(n).debute_par("liquide") && (n_l < 0 || pbm->nom_phase(n).finit_par("continu")))  n_l = n;
  if (n_l < 0) Process::exit(que_suis_je() + " : liquid phase not found!");
 
  // Traitement milieu MUSIG (phase dispersee)
  const Milieu_MUSIG *milMusig = sub_type(Milieu_MUSIG, pbm->milieu()) ? &ref_cast(Milieu_MUSIG, pbm->milieu()) : nullptr;
  if (milMusig)
    {
      for (int k = 0; k < pbm->nb_phases(); k++)
        {
          if (milMusig->has_carrier_gas(k)) n_l = k;
          if (milMusig->has_carrier_liquid(k)) n_l = k;
        }
    }
 
  return is;
}
 
void Frottement_interfacial_bulles_constant::completer()
{
  const Pb_Multiphase *pbm = sub_type(Pb_Multiphase, pb_.valeur()) ? &ref_cast(Pb_Multiphase, pb_.valeur()) : nullptr;
  if ((r_bulle_<0.) && (!pbm->has_champ("diametre_bulles"))) Process::exit(que_suis_je() + " : there must be a bubble diameter defined in the problem or a bubble radius defined in the force !");
}
 
void Frottement_interfacial_bulles_constant::coefficient(const DoubleTab& alpha, const DoubleTab& p, const DoubleTab& T,
                                                         const DoubleTab& rho, const DoubleTab& mu, const DoubleTab& sigma, double Dh,
                                                         const DoubleTab& ndv, const DoubleTab& d_bulles, DoubleTab& coeff) const
{
  int k,N = ndv.dimension(0);
 
  coeff = 0.;
 
  for (k = 0; k < N; k++)
    if (k!=n_l)
      {
        if (r_bulle_>0) coeff(k, n_l, 1) = 3. / 8. * C_d_ * alpha(k) / r_bulle_    * rho(n_l) ;
        else            coeff(k, n_l, 1) = 3. / 4. * C_d_ * alpha(k) / d_bulles(k) * rho(n_l) ;
        coeff(n_l, k, 1) = coeff(k, n_l, 1);
        coeff(k, n_l, 0) = coeff(k, n_l, 1) * ndv(n_l,k);
        coeff(n_l, k, 0) = coeff(n_l, k, 1) * ndv(n_l,k);
      }
}