Flux_parietal_Nusselt.cpp

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#include <Flux_parietal_Nusselt.h>
#include <Milieu_composite.h>
#include <Pb_Multiphase.h>
#include <cmath>
 
Implemente_instanciable(Flux_parietal_Nusselt, "Flux_parietal_Nusselt", Flux_parietal_base);
// XD flux_parietal_nusselt flux_parietal_base nusselt INHERITS_BRACE not_set
 
Sortie& Flux_parietal_Nusselt::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Flux_parietal_Nusselt::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter_non_std("formula", this, Param::REQUIRED); // XD_ADD_P chaine
  // XD_CONT Nusselt formula as a function of Re and Pr
  param.lire_avec_accolades_depuis(is);
  return is;
}
 
int Flux_parietal_Nusselt::lire_motcle_non_standard(const Motcle& mot, Entree& is)
{
  if (mot == "formula")
    {
      Nom tmp;
      is >> tmp;
      Cerr << "Reading and interpreting the function " << tmp << " ... ";
      nusselt_.setNbVar(2);
      nusselt_.setString(tmp);
      nusselt_.addVar("Re");
      nusselt_.addVar("Pr");
      nusselt_.parseString();
      return 1;
    }
  else
    return Flux_parietal_base::lire_motcle_non_standard(mot, is);
}
 
void Flux_parietal_Nusselt::qp(const input_t& in, output_t& out) const
{
  const double Re = in.rho[0] * in.v[0] * in.D_h / in.mu[0], Pr = in.mu[0] * in.Cp[0] / in.lambda[0];
  nusselt_.setVar("Re", Re);
  nusselt_.setVar("Pr", Pr);
  const double Nu = nusselt_.eval();
 
  double DT = in.Tp - in.T[0], dTf_DT = -1.0, dTp_DT = 1.0, dp_DT = 0.0;
  if (out.qpk)            (*out.qpk)(0) = in.lambda[0] / in.D_ch * Nu * DT;
  if (out.dTf_qpk) (*out.dTf_qpk)(0, 0) = in.lambda[0] / in.D_ch * Nu * dTf_DT;
  if (out.dTp_qpk)    (*out.dTp_qpk)(0) = in.lambda[0] / in.D_ch * Nu * dTp_DT;
  if (out.dp_qpk)      (*out.dp_qpk)(0) = in.lambda[0] / in.D_ch * Nu * dp_DT;
}