Viscosite_turbulente_WIF.cpp

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#include <Viscosite_turbulente_WIF.h>
#include <Param.h>
#include <Probleme_base.h>
#include <Champ_base.h>
#include <TRUSTTab_parts.h>
#include <TRUSTTrav.h>
 
Implemente_instanciable(Viscosite_turbulente_WIF, "Viscosite_turbulente_WIF", Viscosite_turbulente_base);
 
Sortie& Viscosite_turbulente_WIF::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Viscosite_turbulente_WIF::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("limiter|limiteur", &limiter_);
  param.ajouter("rapport_aspect_moyen|average_aspect_ratio", &gamma_);
  param.lire_avec_accolades_depuis(is);
  return is;
}
 
void Viscosite_turbulente_WIF::eddy_viscosity(DoubleTab& nu_t) const
{
  nu_t = 0; // no eddy viscosity here ; use ggdh for diffusion
}
 
void Viscosite_turbulente_WIF::reynolds_stress(DoubleTab& R_ij) const // Renvoie <u_i'u_j'>
{
  const DoubleTab& tab_alpha = pb_->get_champ("alpha").passe();
  const int D = dimension;
  const int N = tab_alpha.dimension(1);
 
  if (N != 2)
    Process::exit("Visocisty_turbulente_WIF is only coded for 2 phases");
  if (D != 3)
    Process::exit("Visocisty_turbulente_WIF is only coded for 3 dimensions");
 
  const DoubleTab& tab_u = pb_->get_champ("vitesse").passe();
  ConstDoubleTab_parts p_u(tab_u); //en PolyMAC_MPFA, tab_u contient (nf.u) aux faces, puis (u_i) aux elements
  int i_part {-1};
  for (int i = 0; i < p_u.size(); i++)
    if (p_u[i].get_md_vector() == R_ij.get_md_vector())
      i_part = i; //on cherche une partie ayant le meme support
  if (i_part < 0)
    Process::exit("Viscosite_turbulente_WIF : inconsistency between velocity and Rij!");
 
  const DoubleTab& u = p_u[i_part]; //le bon tableau
  DoubleTrav u_r(u.dimension(0), D);
  DoubleTrav u_r_carre(u.dimension(0), 1);
  for (int i = 0; i < R_ij.dimension(0); i++)
    for (int d = 0; d < D; d++)
      {
        u_r(i, d) = u(i, d, 1) - u(i, d, 0); // relative speed = gas speed - liquid speed
        u_r_carre(i, 0) += u_r(i, d)*u_r(i, d);
      }
 
  for (int i = 0; i < R_ij.dimension(0); i++)
    for (int d = 0; d < D; d++)
      for (int db = 0; db < D; db++)
        {
          R_ij(i, 1, d, db) = 0 ; // No WIF for gas phase
          R_ij(i, 0, d, db) = tab_alpha(i, 1) * (3.0/20.0 * u_r_carre(i, 0) * (db==d ? 1 : 0) + (1.0/20.0 + 1.5*gamma_*gamma_*gamma_*0.25) * u_r(i, d)*u_r(i, db));
        }
}
 
void Viscosite_turbulente_WIF::k_over_eps(DoubleTab& k_sur_eps) const
{
  k_sur_eps =  0;
}
 
void Viscosite_turbulente_WIF::eps(DoubleTab& eps_) const
{
  eps_ =  0;
}