Portance_interfaciale_Sugrue.cpp

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#include <Portance_interfaciale_Sugrue.h>
#include <Pb_Multiphase.h>
#include <math.h>
 
Implemente_instanciable(Portance_interfaciale_Sugrue, "Portance_interfaciale_Sugrue", Portance_interfaciale_base);
 
Sortie& Portance_interfaciale_Sugrue::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Portance_interfaciale_Sugrue::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("constante_gravitation", &g_);
  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++) //search for n_l, n_g: continuous {liquid,gas} phase with priority
    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!");
 
  return is;
}
 
void Portance_interfaciale_Sugrue::coefficient(const input_t& in, output_t& out) const
{
  int k, N = out.Cl.dimension(0);
 
  for (k = 0; k < N; k++)
    if (k!=n_l) // k gas phase
      {
        int ind_trav = (k>n_l) ? (n_l*(N-1)-(n_l-1)*(n_l)/2) + (k-n_l-1) : (k*(N-1)-(k-1)*(k)/2) + (n_l-k-1);
 
        double Eo = g_ * std::abs(in.rho[n_l]-in.rho[k]) * in.d_bulles[k]*in.d_bulles[k]/in.sigma[ind_trav];
        double Wo = std::min(Eo * in.k_turb[n_l]/std::max(in.nv(n_l,k)*in.nv(n_l,k), 1.e-8) , 6.); // Experimental validation up to Wo=6
        double f_Wo = std::min(0.03, 5.0404 - 5.0781*std::pow(Wo, 0.0108));
        double f_alp= std::max(1.0155-0.0154*std::exp(8.0506*in.alpha[k]), 0.);
        double Cl = f_Wo*f_alp ;
 
        out.Cl(k, n_l) = Cl * in.rho[n_l] * in.alpha[k] ;
        out.Cl(n_l, k) = out.Cl(k, n_l);
      }
}