Flux_interfacial_constant_Nu.cpp

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#include <Flux_interfacial_constant_Nu.h>
#include <Pb_Multiphase.h>
#include <Sources_helpers_Multiphase.h>
 
Implemente_instanciable(Flux_interfacial_constant_Nu, "Flux_interfacial_constant_Nu", Flux_interfacial_base);
 
Sortie& Flux_interfacial_constant_Nu::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Flux_interfacial_constant_Nu::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("Nu", &Nu_, Param::REQUIRED);
  param.lire_avec_accolades_depuis(is);
 
  return is;
}
 
void Flux_interfacial_constant_Nu::completer()
{
  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!");
  n_l = find_liquid_phase(*pbm, que_suis_je());
}
 
void Flux_interfacial_constant_Nu::coeffs(const input_t& in, output_t& out) const
{
  int k, N = out.hi.dimension(0);
  for (k = 0; k < N; k++)
    if (k != n_l)
      {
        const int ind_trav = sigma_pair_index(k, n_l, N);
 
        double L_cap = std::sqrt( in.sigma[ind_trav] / (9.81*(in.rho[n_l]-in.rho[k])) );
 
        out.hi(n_l, k) = Nu_ * in.lambda[n_l] / L_cap * 6 * std::max(in.alpha[k], 1.e-3) / L_cap  ; // std::max() pour que le flux interfacial sont non nul quand le taux de vide tombe
        out.da_hi(n_l, k, k)  = in.alpha[k] > 1.e-3 ? Nu_ * in.lambda[n_l] / L_cap * 6 / L_cap : 0. ; // std::max() pour que le flux interfacial sont non nul quand le taux de vide tombe
        out.hi(k, n_l) = 1e10;
      }
}