Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA.cpp

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#include <Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA.h>
 
#include <Dissipation_type_helpers.h>
#include <Energie_cinetique_turbulente.h>
#include <Champ_Elem_PolyMAC_MPFA.h>
#include <Echange_impose_base.h>
#include <Domaine_PolyMAC_MPFA.h>
#include <Domaine_Cl_PolyMAC_family.h>
#include <Probleme_base.h>
#include <Neumann_paroi.h>
#include <Dirichlet.h>
 
Implemente_instanciable(Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA, "Diffusion_croisee_echelle_temp_taux_diss_turb_Elem_PolyMAC_MPFA", Source_Diffusion_croisee_echelle_temp_taux_diss_turb);
 
Sortie& Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA::printOn(Sortie& os) const { return Source_Diffusion_croisee_echelle_temp_taux_diss_turb::printOn(os); }
 
Entree& Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA::readOn(Entree& is) { return Source_Diffusion_croisee_echelle_temp_taux_diss_turb::readOn(is); }
 
void Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA::completer()
{
  const Probleme_base& pb = equation().probleme();
 
  for (int i = 0; i < pb.nombre_d_equations(); i++)
    {
      const Equation_base& eq_i = pb.equation(i);
      for (int j = 0; j < eq_i.domaine_Cl_dis().nb_cond_lim(); j++)
        {
          const Cond_lim& cond_lim_loc = eq_i.domaine_Cl_dis().les_conditions_limites(j);
          if (sub_type(Echange_impose_base, cond_lim_loc.valeur()))
            {
              if (sub_type(Energie_cinetique_turbulente, eq_i))
                f_grad_k_fixe_ = 0;
              else if (sub_type(Echelle_temporelle_turbulente, eq_i) || sub_type(Taux_dissipation_turbulent, eq_i))
                f_grad_tau_omega_fixe_ = 0;
            }
        }
    }
}
 
/*! @brief Compute the face gradient of a PolyMAC_MPFA cell field using fgrad tables.
 *
 *         Handles element contributions and boundary conditions (Echange_impose_base,
 *         Neumann_paroi, Dirichlet) via the fcl dispatch table.
 *
 * @param ch the PolyMAC_MPFA cell field whose fgrad tables are used
 * @param field_passe values at the previous time step
 * @param grad_fixe if true, use init_grad (fixed stencil); otherwise calc_grad (recomputed each step)
 * @param nf number of faces
 * @param N line size (number of components)
 * @param nb_elem_tot total number of elements (real + virtual)
 * @param grad_f [out] face gradient array (nf, N)
 */
static void compute_face_gradient(const Champ_Elem_PolyMAC_MPFA& ch,
                                  const DoubleTab& field_passe,
                                  const bool grad_fixe,
                                  const int nf, const int N, const int nb_elem_tot,
                                  DoubleTrav& grad_f)
{
  if (grad_fixe)
    ch.init_grad(0);
  else
    ch.calc_grad(0);
 
  const IntTab& f_d = ch.fgrad_d;
  const IntTab& f_e = ch.fgrad_e;
  const DoubleTab& f_w = ch.fgrad_w;
  const IntTab& fcl = ch.fcl();
  const Conds_lim& cls = ch.domaine_Cl_dis().les_conditions_limites();
 
  for (int f = 0; f < nf; f++)
    for (int n = 0; n < N; n++)
      {
        grad_f(f, n) = 0;
        for (int j = f_d(f); j < f_d(f + 1); j++)
          {
            const int e = f_e(j);
            const int f_bord = e - nb_elem_tot;
            if (f_bord < 0) // contribution d'un element
              grad_f(f, n) += f_w(j) * field_passe(e, n);
            else if (fcl(f_bord, 0) == 1 || fcl(f_bord, 0) == 2) // Echange_impose_base
              grad_f(f, n) += (f_w(j) ? f_w(j, n) * ref_cast(Echange_impose_base, cls[fcl(f_bord, 1)].valeur()).T_ext(fcl(f_bord, 2), n) : 0);
            else if (fcl(f_bord, 0) == 4) // Neumann non homogene
              grad_f(f, n) += (f_w(j) ? f_w(j, n) * ref_cast(Neumann_paroi, cls[fcl(f_bord, 1)].valeur()).flux_impose(fcl(f_bord, 2), n) : 0);
            else if (fcl(f_bord, 0) == 6) // Dirichlet
              grad_f(f, n) += f_w(j) * ref_cast(Dirichlet, cls[fcl(f_bord, 1)].valeur()).val_imp(fcl(f_bord, 2), n);
          }
      }
}
 
void Diffusion_croisee_echelle_temp_taux_diss_turb_PolyMAC_MPFA::ajouter_blocs(matrices_t matrices, DoubleTab& secmem, const tabs_t& semi_impl) const
{
  const Domaine_PolyMAC_MPFA& domaine = ref_cast(Domaine_PolyMAC_MPFA, equation().domaine_dis());
  const Champ_Elem_PolyMAC_MPFA& ch_k = ref_cast(Champ_Elem_PolyMAC_MPFA, equation().probleme().get_champ("k"));
  const DoubleTab& k_passe = ch_k.passe();
  const DoubleTab& xp = domaine.xp();
  const DoubleTab& xv = domaine.xv();
 
  const IntTab& e_f = domaine.elem_faces();
  const IntTab& f_e = domaine.face_voisins();
  const DoubleVect& pe = equation().milieu().porosite_elem();
  const DoubleVect& ve = domaine.volumes();
  const DoubleVect& fs = domaine.face_surfaces();
 
  const Champ_Elem_PolyMAC_MPFA& ch_diss = ref_cast(Champ_Elem_PolyMAC_MPFA, equation().inconnue());
  const DoubleTab& diss_passe = ch_diss.passe();
  const DoubleTab& diss = ch_diss.valeurs();
 
  const int nf = domaine.nb_faces();
  const int D = dimension;
  const int nb_elem = domaine.nb_elem();
  const int nb_elem_tot = domaine.nb_elem_tot();
  const int N = diss_passe.line_size();
 
  const std::string Type_diss = get_dissipation_type(equation());
 
  assert(N == 1 || k_passe.line_size() == 1); // si Ntau > 1 il vaut mieux iterer sur les id_composites des phases turbulentes decrites par un modele k-tau
 
  /* Calcul de grad de tau/omega et de k aux faces */
 
  DoubleTrav grad_f_diss(nf, N);
  compute_face_gradient(ch_diss, diss_passe, f_grad_tau_omega_fixe_, nf, N, nb_elem_tot, grad_f_diss);
 
  DoubleTrav grad_f_k(nf, N);
  compute_face_gradient(ch_k, k_passe, f_grad_k_fixe_, nf, N, nb_elem_tot, grad_f_k);
 
  /* Calcul de grad(tau/omega).grad(k) */
 
  DoubleTrav grad_f_diss_dot_grad_f_k(nb_elem, N);
  for (int e = 0; e < nb_elem; e++)
    for (int n = 0; n < N; n++)
      {
        std::array grad_diss = {0., 0., 0.};
        std::array grad_k = {0., 0., 0.};
 
        int f {0};
        for (int j = 0; j < e_f.dimension(1) && (f = e_f(e, j)) >= 0; j++)
          {
            const double coeff = (e == f_e(f, 0) ? 1 : -1) * fs(f) / ve(e);
            for (int d = 0; d < D; d++)
              {
                const double w = coeff * (xv(f, d) - xp(e, d));
                grad_diss.at(d) += w * grad_f_diss(f, n);
                grad_k.at(d) += w * grad_f_k(f, n);
              }
          }
 
        double dot = 0.;
        for (int d = 0; d < D; d++)
          dot += grad_diss.at(d) * grad_k.at(d);
        grad_f_diss_dot_grad_f_k(e, n) = dot;
      }
 
  /* Remplissage des matrices et du second membre */
 
  Matrice_Morse* const M = matrices.count(ch_diss.le_nom().getString()) ? matrices.at(ch_diss.le_nom().getString()) : nullptr;
 
  for (int e = 0; e < nb_elem; e++)
    for (int n = 0; n < N; n++)
      {
        const double peve = pe(e) * ve(e);
 
        if (Type_diss == "tau")
          {
            const double dot_min = std::min(grad_f_diss_dot_grad_f_k(e, n), 0.);
            secmem(e, n) += peve * sigma_d_ * diss(e, n) * dot_min;
            if (M)
              (*M)(N * e + n, N * e + n) -= peve * sigma_d_ * dot_min;
          }
        else if (Type_diss == "omega")
          {
            if (diss(e, n) > 1.e-8)
              {
                const double dp = std::max(diss_passe(e, n), 1.e-6);
                const double dot_max = std::max(grad_f_diss_dot_grad_f_k(e, n), 0.);
                secmem(e, n) += peve * sigma_d_ / dp * (2 - diss(e, n) / dp) * dot_max;
                if (M)
                  (*M)(N * e + n, N * e + n) -= peve * sigma_d_ * (-1. / (dp * dp)) * dot_max;
              }
          }
      }
}