Flux_parietal_bilineaire.cpp

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#include <Flux_parietal_bilineaire.h>
#include <Milieu_composite.h>
#include <Pb_Multiphase.h>
#include <Sources_helpers_Multiphase.h>
#include <cmath>
 
 
Implemente_instanciable( Flux_parietal_bilineaire, "Flux_parietal_bilineaire", Flux_parietal_base) ;
 
Sortie& Flux_parietal_bilineaire::printOn( Sortie& os ) const
{
  return os;
}
 
Entree& Flux_parietal_bilineaire::readOn( Entree& is )
{
  Param param(que_suis_je());
  param.ajouter("coeff_echange_monophasique|single_phase_exchange_coeff", &h_mono_, Param::REQUIRED);
  param.ajouter("coeff_echange_diphasique|multi_phase_exchange_coeff", &h_diph_, Param::REQUIRED);
  param.ajouter("coeff_osv|osv_coeff", &coeff_, Param::REQUIRED);
  param.ajouter("offset", &b_);
  param.lire_avec_accolades_depuis(is);
 
  /* n_l / n_g : phases liquide / gaz continu */
  const Pb_Multiphase *pbm = sub_type(Pb_Multiphase, pb_.valeur()) ? &ref_cast(Pb_Multiphase, pb_.valeur()) : nullptr;
 
  if (!pbm || pbm->nb_phases() == 1) // pas un Pb_Multiphase -> monophasique liquide
    Process::exit("Flux_parietal_bilineaire can only be used for a multiphase problem with 2 phases!");
 
  n_l = find_liquid_phase(*pbm, que_suis_je());
 
  // recherche de n_g : phase gaz_continu en priorite
  for (int n = 0; n < pbm->nb_phases(); n++)
    if (pbm->nom_phase(n).debute_par("gaz")
        && (n_g < 0 || pbm->nom_phase(n).finit_par("continu")))
      n_g = n;
 
  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_bilineaire needs saturation!");
 
  return is;
}
 
double Flux_parietal_bilineaire::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);
  const double Tld = Ts - phi * coeff_;
  const double dp_Tld = sat->dP_Tsat(in.p) - dp_phi * coeff_;
  const double dTp_Tld = -dTp_phi * coeff_;
  const double dTf_Tld = -dTf_phi * coeff_;
 
  const double eps = std::clamp((in.T[n_l] - Tld) / (Ts - Tld), 0.0, 1.0);
 
  if (Tld < in.T[n_l] && in.T[n_l] < Ts)
    {
      const double delT = in.T[n_l] - Tld;
      const double delTs = Ts - Tld;
      const double fac = 1./(delTs*delTs);
      dTf_eps = (delTs * (1 - dTf_Tld) + delT * dTf_Tld) * fac;
      dp_eps = (delTs * (-dp_Tld) - delT * (sat->dP_Tsat(in.p) - dp_Tld)) * fac;
      dTp_eps = (delTs * (-dTp_Tld) + delT * dTp_Tld) * fac;
    }
 
  return eps;
}
 
void Flux_parietal_bilineaire::qp(const input_t& in, output_t& out) const
{
  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]);
          const double P_diph= h_diph_ * (in.Tp - Ts) + b_;
 
          if (in.Tp < Ts) //monophasique
            {
              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) = 0;
            }
          else
            {
              if (Ts <= in.T[n_l]) // Everything in the evaporative term
                {
                  if (out.qpi)
                    (*out.qpi)(n_l, k) = P_diph;
                  if (out.dTp_qpi)
                    (*out.dTp_qpi)(n_l, k) = h_diph_;
                  if (out.dTf_qpi)
                    (*out.dTf_qpi)(n_l, k, n_l) = 0;
                  if (out.dp_qpi)
                    (*out.dp_qpi)(n_l, k, n_l) = -h_diph_*sat->dP_Tsat(in.p);
                }
              else
                {
                  double dTf_eps = 0.0, dp_eps = 0.0, dTp_eps = 0.0;
                  const double eps = fraction_flux_vap(in, P_diph, 0,
                                                       -h_diph_*sat->dP_Tsat(in.p),
                                                       h_diph_, 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_diph;
                  if (out.dTp_qpk)
                    (*out.dTp_qpk)(n_l) = (1.0 - eps) * h_diph_ - P_diph * dTp_eps;
                  if (out.dTf_qpk)
                    (*out.dTf_qpk)(n_l, n_l) = -P_diph*dTf_eps;
                  if (out.dp_qpk)
                    (*out.dp_qpk)(n_l, k, n_l) = -h_diph_*sat->dP_Tsat(in.p)*(1.0 - eps)
                                                 - P_diph*dp_eps;
 
                  // Evaporation
                  if (out.qpi)
                    (*out.qpi)(n_l, k) = eps * P_diph;
                  if (out.dTp_qpi)
                    (*out.dTp_qpi)(n_l, k) = dTp_eps * P_diph+ eps * h_diph_;
                  if (out.dTf_qpi)
                    (*out.dTf_qpi)(n_l, k, n_l) = P_diph*dTf_eps;
                  if (out.dp_qpi)
                    (*out.dp_qpi)(n_l, k, n_l) = -h_diph_*sat->dP_Tsat(in.p)*eps
                                                 + P_diph*dp_eps;
                }
            }
        }
}