Flux_parietal_diphasique_simple_lineaire.cpp

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#include <Flux_parietal_diphasique_simple_lineaire.h>
#include <Milieu_composite.h>
#include <Pb_Multiphase.h>
 
Implemente_instanciable(Flux_parietal_diphasique_simple_lineaire, "Flux_parietal_diphasique_simple_lineaire", Flux_parietal_base);
 
Sortie& Flux_parietal_diphasique_simple_lineaire::printOn(Sortie& os) const { return os; }
 
Entree& Flux_parietal_diphasique_simple_lineaire::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("coeff_echange_monophasique|single_phase_exchange_coeff", &h_mono_, Param::REQUIRED);
  param.ajouter("coeff_osv|osv_coeff", &coeff_, Param::REQUIRED);
  param.lire_avec_accolades_depuis(is);
 
  /* n_l / n_g : continuous liquid / gas phases */
  const Pb_Multiphase *pbm = sub_type(Pb_Multiphase, pb_.valeur()) ? &ref_cast(Pb_Multiphase, pb_.valeur()) : nullptr;
 
  if (!pbm || pbm->nb_phases() == 1) // not a Pb_Multiphase -> single-phase liquid
    Process::exit("Flux_parietal_diphasique_simple_lineaire can only be used for a multiphase problem with 2 phases!");
  else // search for n_l, n_g: continuous {liquid,gas} phase with priority
    {
      for (int n = 0; n < pbm->nb_phases(); n++)
        if (pbm->nom_phase(n).debute_par("liquide") && (n_l < 0 || pbm->nom_phase(n).finit_par("continu")))
          n_l = n;
        else if (pbm->nom_phase(n).debute_par("gaz") && (n_g < 0 || pbm->nom_phase(n).finit_par("continu")))
          n_g = n;
    }
 
  if (n_l < 0)
    Process::exit(que_suis_je() + " : main phase not found!");
 
  assert (n_l >= 0 && n_g >= 0);
 
  const Milieu_composite *mc = sub_type(Milieu_composite, pb_->milieu()) ? &ref_cast(Milieu_composite, pb_->milieu()) : nullptr;
 
  if (mc->has_saturation(n_l, n_g))
    sat = &mc->get_saturation(n_l, n_g);
 
  if (!sat)
    Process::exit("Flux_parietal_diphasique_simple_lineaire needs saturation!");
 
  return is;
}
 
double Flux_parietal_diphasique_simple_lineaire::fraction_flux_vap(const input_t& in, double phi, double dTf_phi, double dp_phi, double dTp_phi, double& dTf_eps, double& dp_eps, double& dTp_eps) const
{
  const double Ts = sat->Tsat(in.p),
               Tld = Ts - phi * coeff_,
               dp_Tld = sat->dP_Tsat(in.p) - dp_phi * coeff_,
               dTp_Tld = -dTp_phi * coeff_,
               dTf_Tld = -dTf_phi * coeff_;
 
  const double eps = std::min(1.0, std::max(0.0, (in.T[n_l] - Tld) / (Ts - Tld)));
 
  if (in.T[n_l] > Tld && in.T[n_l] < Ts) // non-zero derivative
    {
      dTf_eps = ((Ts - Tld) * (-dTf_Tld) + (in.T[n_l] - Tld) * dTf_Tld) / (Ts - Tld) / (Ts - Tld);
      dp_eps = ((Ts - Tld) * (-dp_Tld) - (in.T[n_l] - Tld) * (sat->dP_Tsat(in.p) - dp_Tld)) / (Ts - Tld) / (Ts - Tld);
      dTp_eps = ((Ts - Tld) * (-dTp_Tld) + (in.T[n_l] - Tld) * dTp_Tld) / (Ts - Tld) / (Ts - Tld);
    }
 
  return eps;
}
 
void Flux_parietal_diphasique_simple_lineaire::qp(const input_t& in, output_t& out) const
{
  double Ts = sat->Tsat(in.p) ;
 
  const Milieu_composite& milc = ref_cast(Milieu_composite, pb_->milieu());
 
  if (out.nonlinear)
    (*out.nonlinear) = 1; // we turn on nonlinear in case it goes to two-phase during the newton
 
  for (int k = 0; k < in.N; k++)
    if (n_l != k)
      if (milc.has_saturation(n_l, k))
        {
          const double P_mono = h_mono_ * (in.Tp - in.T[n_l]);
 
          if (in.Tp < Ts)
            {
              if (out.qpk)
                (*out.qpk)(n_l) = P_mono;
              if (out.dTp_qpk)
                (*out.dTp_qpk)(n_l) = h_mono_;
              if (out.dTf_qpk)
                (*out.dTf_qpk)(n_l, n_l) = -h_mono_;
            }
          else
            {
              if (Ts <= in.T[n_l]) // Everything in the evaporative term
                {
                  if (out.qpi)
                    (*out.qpi)(n_l, k) = P_mono;
                  if (out.dTp_qpi)
                    (*out.dTp_qpi)(n_l, k) = h_mono_;
                  if (out.dTf_qpi)
                    (*out.dTf_qpi)(n_l, k, n_l) = -h_mono_;
                }
              else
                {
                  double dTf_eps = 0.0, dp_eps = 0.0, dTp_eps = 0.0;
                  double eps = fraction_flux_vap(in, P_mono, -h_mono_, 0.0, h_mono_, dTf_eps, dp_eps, dTp_eps);
 
                  // Fill in the outputs : heat flux towards liquid
                  if (out.qpk)
                    (*out.qpk)(n_l) = (1.0 - eps) * P_mono;
                  if (out.dTp_qpk)
                    (*out.dTp_qpk)(n_l) = (1.0 - eps) * h_mono_ - P_mono * dTp_eps;
                  if (out.dTf_qpk)
                    (*out.dTf_qpk)(n_l, n_l) = -(1.0 - eps) * h_mono_ + P_mono * dTf_eps;
 
                  // Evaporation
                  if (out.qpi)
                    (*out.qpi)(n_l, k) = eps * P_mono;
                  if (out.dTp_qpi)
                    (*out.dTp_qpi)(n_l, k) = dTp_eps * P_mono + eps * h_mono_;
                  if (out.dTf_qpi)
                    (*out.dTf_qpi)(n_l, k, n_l) = dTf_eps * P_mono - eps * h_mono_;
                }
            }
        }
}