Viscosite_turbulente_k_omega.cpp

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#include <Viscosite_turbulente_k_omega.h>
#include <Masse_ajoutee_base.h>
#include <Milieu_composite.h>
#include <TRUSTTab_parts.h>
#include <Pb_Multiphase.h>
#include <Champ_base.h>
#include <Param.h>
 
Implemente_instanciable(Viscosite_turbulente_k_omega, "Viscosite_turbulente_k_omega", Viscosite_turbulente_base);
// XD type_diffusion_turbulente_multiphase_k_omega type_diffusion_turbulente_multiphase_deriv k_omega BRACE not_set
 
Sortie& Viscosite_turbulente_k_omega::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Viscosite_turbulente_k_omega::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("limiter|limiteur", &limiter_); // XD_ADD_P chaine
  // XD_CONT not_set
  param.ajouter("sigma", &sigma_); // XD_ADD_P floattant
  // XD_CONT not_set
  param.ajouter("beta_k", &beta_k_); // XD_ADD_P floattant
  // XD_CONT not_set
  param.ajouter("gas_turb", &gas_turb_); // XD_ADD_P flag
  // XD_CONT not_set
  param.lire_avec_accolades_depuis(is);
 
  return is;
}
 
void Viscosite_turbulente_k_omega::completer()
{
  const Pb_Multiphase* pbm = sub_type(Pb_Multiphase, pb_.valeur()) ? &ref_cast(Pb_Multiphase, pb_.valeur()) : nullptr ;
  if ( (gas_turb_) && !(pbm) )
    Process::exit(que_suis_je() + " : there must be multiphase problem if you want gas phase turbulence !");
 
  if ( (gas_turb_) && (!pb_->has_correlation("masse_ajoutee")) )
    Process::exit(que_suis_je() + " : there must be an added mass correlation if you want gas phase turbulence !");
 
  if ( (gas_turb_) && (!int(pb_->has_champ("alpha"))) )
    Process::exit(que_suis_je() + " : there must be void fraction if you want gas phase turbulence !");
 
  if (pb_->has_correlation("masse_ajoutee"))
    correlation_ = pb_->get_correlation("masse_ajoutee");
}
 
void Viscosite_turbulente_k_omega::eddy_viscosity(DoubleTab& nu_t) const
{
  //tout en explicite
  const DoubleTab& k = pb_->get_champ("k").passe();
  const DoubleTab& omega = pb_->get_champ("omega").passe();
  const DoubleTab& nu = pb_->get_champ("viscosite_cinematique").passe();
  const DoubleTab& rho = pb_->get_champ("masse_volumique").passe();
  const DoubleTab *alpha = pb_->has_champ("alpha") ? &(pb_->get_champ("alpha").passe()) : nullptr ;
  const int cnu = nu.dimension(0) == 1;
 
  //il faut que nu_t et k aient la meme localisation et que nu_t ait au moins autant de composantes que k
  assert(k.dimension(1) <= nu_t.dimension(1));
  //on met 0 pour les composantes au-dela de k.dimension(1) (ex. : vapeur dans Pb_Multiphase)
  for (int i = 0; i < nu_t.dimension(0); i++)
    for (int n = 0; n < nu_t.dimension(1); n++)
      nu_t(i, n) = (n < k.dimension(1))
                   ? sigma_ * ( (omega(i,n) > 0.) ? std::max(k(i, n) / omega(i, n), limiter_ * nu(!cnu * i, n)): limiter_ * nu(!cnu * i, n) )
                   : 0. ;
 
  if (gas_turb_)
    {
      const Milieu_composite& mil = ref_cast(Milieu_composite, ref_cast(Pb_Multiphase, pb_.valeur()).milieu());
      if (mil.are_fluid_properties_initialised())
        {
          DoubleTrav coeff(nu_t.dimension(1));
          for (int i = 0; i < nu_t.dimension(0); i++)
            {
              const Masse_ajoutee_base& corr_ma_ = ref_cast(Masse_ajoutee_base, correlation_.valeur());
              corr_ma_.coefficient( & (*alpha)(i,0), &rho(i,0), coeff);
              for (int n = k.dimension(1) ; n < nu_t.dimension(1) ; n++)
                nu_t(i, n) =  nu_t(i, 0.)  * (1. + coeff(n)* rho(i,0)/rho(i,n)) * std::min((*alpha)(i,n)*10, 1.) ;
            }
        }
    }
}
 
void Viscosite_turbulente_k_omega::reynolds_stress(DoubleTab& R_ij) const // Renvoie <u_i'u_j'>
{
  const DoubleTab& k = pb_->get_champ("k").passe();
  const DoubleTab& omega = pb_->get_champ("omega").passe();
  const DoubleTab& nu = pb_->get_champ("viscosite_cinematique").passe();
  const DoubleTab& grad_u = pb_->get_champ("gradient_vitesse").passe();
 
  const int cnu = nu.dimension(0) == 1;
  const int D = dimension;
  const int N = nu.dimension(1);
  const int Nk = k.dimension(1);
 
  int i_part = -1;
  ConstDoubleTab_parts p_gu(grad_u); //en PolyMAC_MPFA, grad_u contient (nf.grad)u_i aux faces, puis (d_j u_i) aux elements
  for (int i = 0; i < p_gu.size(); i++)
    if (p_gu[i].get_md_vector() == R_ij.get_md_vector())
      i_part = i; //on cherche une partie ayant le meme support que k
 
  if (i_part < 0)
    Process::exit("Viscosite_turbulente_k_omega : inconsistency between velocity gradient and k!");
 
  const DoubleTab& gu = p_gu[i_part]; //le bon tableau
  for (int i = 0; i < R_ij.dimension(0); i++)
    for (int n = 0; n < N; n++)
      {
        double sum_diag = 0.;
        double nut_loc {0.0};
        if (n < Nk)
          {
            if (omega(i, n) > 0.)
              nut_loc = std::max(k(i, n) / omega(i, n), limiter_ * nu(!cnu * i, n));
            else
              nut_loc = limiter_*nu(!cnu*i, n);
          }
 
        for (int d = 0; d < D; d++)
          sum_diag += gu(i, d, D * n + d) ;
 
        for (int d = 0; d < D; d++)
          for (int db = 0; db < D; db++) //on ne remplit que les phases concernees par k
            R_ij(i, n, d, db) = (n < Nk)
                                ? sigma_* (  2. / 3. * (k(i, n) + nut_loc * sum_diag) * (d == db) - nut_loc * (gu(i, d, D * n + db) + gu(i, db, D * n + d)))
                                : 0;
      }
}
 
void Viscosite_turbulente_k_omega::k_over_eps(DoubleTab& k_sur_eps) const
{
  const DoubleTab& omega = pb_->get_champ("omega").passe();
  const int nl = k_sur_eps.dimension(0);
  const int N = k_sur_eps.dimension(1);
  const int Nt = omega.dimension(1);
  assert(nl == omega.dimension(0) && Nt <= N);
 
  for (int i = 0; i < nl; i++)
    for (int n = 0; n < N; n++)
      k_sur_eps(i, n) = (n < Nt)
                        ? ((omega(i,n) > 0.) ? 1/(omega(i, n)*beta_k_) : 0)
                        : 0;
}
 
void Viscosite_turbulente_k_omega::eps(DoubleTab& eps_) const
{
  const DoubleTab& omega = pb_->get_champ("omega").passe();
  const DoubleTab& k = pb_->get_champ("k").passe();
  const int nl = eps_.dimension(0);
  const int N = eps_.dimension(1);
  const int Nt = omega.dimension(1);
  assert(nl == omega.dimension(0) && Nt <= N);
 
  for (int i = 0; i < nl; i++)
    for (int n = 0; n < N; n++)
      eps_(i, n) = beta_k_ * ((n < Nt) ? k(i,n) * omega(i, n) : 0);
}
 
void Viscosite_turbulente_k_omega::mettre_a_jour(double temps)
{
  // compute_blending_F1();
}