Dispersion_bulles_turbulente_Lavieville.cpp

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// NeptuneCFD like force no publication
 
#include <Dispersion_bulles_turbulente_Lavieville.h>
#include <Pb_Multiphase.h>
#include <QDM_Multiphase.h>
#include <TRUSTTrav.h>
#include <Frottement_interfacial_base.h>
#include <Masse_ajoutee_base.h>
#include <math.h>
 
Implemente_instanciable(Dispersion_bulles_turbulente_Lavieville, "Dispersion_bulles_turbulente_Lavieville", Dispersion_bulles_base);
 
Sortie& Dispersion_bulles_turbulente_Lavieville::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Dispersion_bulles_turbulente_Lavieville::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.lire_avec_accolades_depuis(is);
 
  n_l = find_liquid_phase();
 
  const Pb_Multiphase& pbm = ref_cast(Pb_Multiphase, pb_.valeur());
  if (pbm.has_correlation("frottement_interfacial")) correlation_drag_ = pbm.get_correlation("frottement_interfacial");
  else Correlation_base::typer_lire_correlation(correlation_drag_, pbm, "frottement_interfacial", is);
  if (pbm.has_correlation("masse_ajoutee")) correlation_masse_ajoutee_ = pbm.get_correlation("masse_ajoutee");
  else Correlation_base::typer_lire_correlation(correlation_masse_ajoutee_, pbm, "masse_ajoutee", is);
 
  return is;
}
 
 
void Dispersion_bulles_turbulente_Lavieville::coefficient(const input_t& in, output_t& out) const
{
  const Frottement_interfacial_base& corr = ref_cast(Frottement_interfacial_base, correlation_drag_.valeur());
  const Masse_ajoutee_base& corrCam = ref_cast(Masse_ajoutee_base, correlation_masse_ajoutee_.valeur());
  int N = out.Ctd.dimension(0);
 
  DoubleTab coeff_drag(N, N);
  DoubleTab coeff_Cam(N); // a zero ?
 
  corrCam.coeff(in.alpha, in.rho, coeff_Cam) ; //
 
  corr.coefficient_CD( in.alpha, in.p, in.T, in.rho, in.mu, in.sigma, in.dh, in.nv, in.d_bulles, coeff_drag);
 
  out.Ctd = 0;
 
  for (int k = 0; k < N; k++)
    if (k!=n_l)
      {
 
        double gamma = 0.5 * in.rho[n_l] / in.rho[k] ;
        double u_r = in.nv(k,n_l) ;
        double tau_t = 3. / 2. * in.nut[n_l] / in.k_turb[n_l] * std::pow (1. + 2.07 * u_r * u_r / in.k_turb[n_l], -0.5 ) ;
        double tau_f = ( 1. / (2. * gamma) + coeff_Cam(k) ) * 4./3. * in.d_bulles[k] / ( coeff_drag(k, n_l) * std::max(u_r, 1e-5) ) ;
 
        double b = (1. + coeff_Cam(k)) / (1. / (2. * gamma) + coeff_Cam(k));
        double eta_r = tau_t / tau_f;
 
        // Turbulent dispersion coefficient: added-mass, inertia, and kinetic energy contributions
        double one_plus_eta = 1. + eta_r;
        double drift_ratio = (b + eta_r) / one_plus_eta;
        double conc_factor = in.alpha[k] / std::max(1. - in.alpha[k], 1e-5);
        double mixing = drift_ratio + conc_factor;
 
        double term_added_mass = coeff_Cam(k) * (b * (b - 1.) / one_plus_eta + eta_r * mixing);
        double term_inertia = 1. / (2. * gamma) * ((b * b + eta_r) / one_plus_eta + eta_r * (drift_ratio + in.alpha[k] / std::max(1. - in.alpha[k], 1e-3)));
        double term_kinetic = mixing * in.rho[n_l] * 2. / 3. * in.k_turb[n_l];
 
        out.Ctd(k, n_l) = term_added_mass + term_inertia - term_kinetic;
      }
}