Op_Dift_Multiphase_VDF_Elem.cpp

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#include <Op_Dift_Multiphase_VDF_Elem.h>
#include <Op_Dift_Multiphase_VDF_Face.h>
#include <Pb_Multiphase.h>
 
Implemente_instanciable_sans_constructeur(Op_Dift_Multiphase_VDF_Elem,"Op_Diff_VDFTURBULENTE_P0_VDF|Op_Diff_VDFTURBULENT_P0_VDF",Op_Dift_VDF_Elem_base);
 
Sortie& Op_Dift_Multiphase_VDF_Elem::printOn(Sortie& s ) const { return s << que_suis_je() ; }
Entree& Op_Dift_Multiphase_VDF_Elem::readOn(Entree& is)
{
  //reading the turbulent diffusivity correlation
  Correlation_base::typer_lire_correlation(corr_, equation().probleme(), "transport_turbulent", is);
  associer_corr_impl<Type_Operateur::Op_DIFT_MULTIPHASE_ELEM, Eval_Dift_Multiphase_VDF_Elem>(corr_);
  associer_proto(equation().probleme(), champs_compris_);
  ajout_champs_proto_elem();
  return is;
}
 
void Op_Dift_Multiphase_VDF_Elem::get_noms_champs_postraitables(Noms& nom,Option opt) const
{
  Op_Dift_VDF_Elem_base::get_noms_champs_postraitables(nom,opt);
  get_noms_champs_postraitables_proto(que_suis_je(), nom, opt);
}
 
void Op_Dift_Multiphase_VDF_Elem::creer_champ(const Motcle& motlu)
{
  Op_Dift_VDF_Elem_base::creer_champ(motlu);
  creer_champ_proto_elem(motlu);
}
 
void Op_Dift_Multiphase_VDF_Elem::completer()
{
  assert(corr_);
  completer_Op_Dift_VDF_base();
  associer_pb<Eval_Dift_Multiphase_VDF_Elem>(equation().probleme());
  completer_proto_elem(*this);
  set_nut_impl<Type_Operateur::Op_DIFT_MULTIPHASE_ELEM, Eval_Dift_Multiphase_VDF_Elem>(nu_ou_lambda_turb_);
}
 
void Op_Dift_Multiphase_VDF_Elem::mettre_a_jour(double temps)
{
  Op_Dift_VDF_Elem_base::mettre_a_jour(temps);
 
  const Operateur_base& op_qdm = equation().probleme().equation(0).operateur(0).l_op_base();
  if (!sub_type(Op_Dift_Multiphase_VDF_Face, op_qdm))
    {
      Cerr << "Error in " << que_suis_je() << ": no turbulent momentum diffusion found!" << finl;
      Process::exit();
    }
 
  const Correlation_base& corr_visc_qdm = ref_cast(Op_Dift_Multiphase_VDF_Face, op_qdm).correlation();
  if (!sub_type(Viscosite_turbulente_base, corr_visc_qdm))
    {
      Cerr << "Error in " << que_suis_je() << ": no turbulent viscosity correlation found!" << finl;
      Process::exit();
    }
 
  // compute d_t_
  nu_ou_lambda_turb_ = 0.; // XXX : to exclude the laminar part
  call_compute_diff_turb(ref_cast(Convection_Diffusion_std, equation()), ref_cast(Viscosite_turbulente_base, corr_visc_qdm));
  set_nut_impl<Type_Operateur::Op_DIFT_MULTIPHASE_ELEM, Eval_Dift_Multiphase_VDF_Elem>(nu_ou_lambda_turb_);
  mettre_a_jour_proto_elem(temps);
}
 
double Op_Dift_Multiphase_VDF_Elem::calculer_dt_stab() const
{
  double dt_stab, coef = -1.e10;
  const Domaine_VDF& domaine_VDF = iter_->domaine();
  const IntTab& elem_faces = domaine_VDF.elem_faces();
  const DoubleTab& lambda = alpha_() /* comme mu */, &diffu = diffusivite_pour_pas_de_temps().valeurs() /* comme nu */;
  const DoubleTab* alp = sub_type(Pb_Multiphase, equation().probleme()) ? &ref_cast(Pb_Multiphase, equation().probleme()).equation_masse().inconnue().passe() : nullptr;
  const DoubleTab& rho = equation().milieu().masse_volumique().passe();
  const int cL = (lambda.dimension(0) == 1), cD = (diffu.dimension(0) == 1), cR = (rho.dimension(0) == 1), dim = Objet_U::dimension;
 
  double mu_turbulent, mu_physique, nu_physique, alfa;
 
  ArrOfInt numfa(2 * dim);
  for (int elem = 0; elem < domaine_VDF.nb_elem(); elem++)
    {
      double diflo = 0.;
      double deltax = 0.;
      for (int i = 0; i < 2 * dim; i++)
        numfa[i] = elem_faces(elem, i);
 
      for (int d = 0; d < dim; d++)
        {
          const double hd = domaine_VDF.dist_face(numfa[d], numfa[dim + d], d);
          deltax += 1. / (hd * hd);
        }
 
      // nu_ou_lambda_turb = alpha * nut * sigma
      for (int ncomp = 0; ncomp < nu_ou_lambda_turb_.line_size(); ncomp++)
        {
          //if (elem==0) cout << "ncomp "<< ncomp << " nu_ou_lambda_turb = alpha * nut * sigma "<< nu_ou_lambda_turb_(elem, ncomp) << endl;
          alfa = (alp ? (*alp)(elem, ncomp) : 1.0);
          mu_turbulent = rho(!cR * elem, ncomp) * nu_ou_lambda_turb_(elem, ncomp);
          //if (elem==0) cout << "ncomp "<< ncomp << " mu_turbulent with alpha "<< mu_turbulent << endl;
          if (alfa != 0.0 ) mu_turbulent = mu_turbulent/alfa;
          //if (elem==0) cout << "ncomp "<< ncomp << " mu_turbulent sans alpha "<< mu_turbulent << endl;
          mu_physique = rho(!cR * elem, ncomp) * lambda(!cL * elem, ncomp);
          nu_physique = diffu(!cD * elem, ncomp);
          //if (elem==0) cout << "ncomp "<< ncomp << " mu_physique "<< mu_physique << endl;
          //if (elem==0) cout << "ncomp "<< ncomp << " nu_physique "<< nu_physique << endl;
 
          // the stability time step is alpha(nu+nu_t); compute a(mu+mu_t)*(nu/mu)=a(mu+mu_t)/rho=a(nu+nu_t) (advantage over dividing by rho: also works for alpha and lambda and in VEF)
          diflo = deltax * (mu_physique + mu_turbulent) * (nu_physique / mu_physique);
          //if (elem==0) cout << "ncomp "<< ncomp << " dt "<< 0.5 / (diflo + DMINFLOAT) << endl;
          coef = std::max(coef, diflo);
        }
    }
 
  coef = Process::mp_max(coef);
  dt_stab = 0.5 / (coef + DMINFLOAT);
  //cout << "dt_stab "<< dt_stab << endl;
 
  return dt_stab;
}