Flux_parietal_adaptatif.cpp

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#include <Flux_parietal_adaptatif.h>
#include <Loi_paroi_adaptative.h>
#include <Pb_Multiphase.h>
#include <Correlation_base.h>
#include <math.h>
 
Implemente_instanciable(Flux_parietal_adaptatif, "Flux_parietal_adaptatif", Flux_parietal_base);
 
Sortie& Flux_parietal_adaptatif::printOn(Sortie& os) const { return Flux_parietal_base::printOn(os); }
Entree& Flux_parietal_adaptatif::readOn(Entree& is) { return Flux_parietal_base::readOn(is); }
 
void Flux_parietal_adaptatif::completer()
{
  correlation_loi_paroi_ = pb_->get_correlation("Loi_paroi");
}
 
void Flux_parietal_adaptatif::qp(const input_t& in, output_t& out) const
{
  const Loi_paroi_adaptative& corr_loi_paroi = ref_cast(Loi_paroi_adaptative, correlation_loi_paroi_.valeur());
 
  const double eps = std::numeric_limits<double>::epsilon();
  const double u_tau =std::max( corr_loi_paroi.get_utau((in.f)), eps);
 
  const double theta_plus = calc_theta_plus(in.y, u_tau, in.mu[0], in.lambda[0], in.rho[0], in.Cp[0], in.D_h);
  const double fac = in.rho[0] * in.Cp[0] * u_tau / theta_plus ;
 
  if (out.qpk)
    (*out.qpk)(0) = fac * (in.Tp - in.T[0]);
 
  if (out.dTf_qpk)
    (*out.dTf_qpk)(0,0) = -fac;
 
  if (out.dTp_qpk)
    (*out.dTp_qpk)(0) = fac;
 
}
 
double Flux_parietal_adaptatif::calc_theta_plus(const double y, const double u_tau, const double mu,
                                                const double lambda, const double rho,
                                                const double Cp, const double Diam_hyd_) const
{
  const double Prandtl = mu*Cp/lambda;
  const double visc = mu/rho;
  const double y_plus = y * u_tau/visc;
  const double beta = std::pow(3.85*std::cbrt(Prandtl) - 1.3, 2) + 2.12*std::log(Prandtl);
  const double gamma = 0.01*(Prandtl*y_plus)*(Prandtl*y_plus)*(Prandtl*y_plus)*(Prandtl*y_plus)/(1+5*Prandtl*Prandtl*Prandtl*y_plus);
  constexpr double y_on_D_h = 0.;
  return Prandtl*y_plus*std::exp(-gamma) + (2.12*std::log((1 + y_plus)*1.5*(2 - y_on_D_h)/(1 + 2*(1 - y_on_D_h)*(1 - y_on_D_h))) + beta)*std::exp(-1/gamma);
}