Op_Diff_VDF_base.cpp

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#include <Convection_Diffusion_Temperature_base.h>
#include <Echange_contact_VDF.h>
#include <Op_Diff_VDF_base.h>
#include <Champ_front_calc.h>
#include <Eval_Diff_VDF.h>
#include <Pb_Multiphase.h>
#include <TRUSTTrav.h>
#include <Operateur.h>
#include <Motcle.h>
 
Implemente_base(Op_Diff_VDF_base, "Op_Diff_VDF_base", Operateur_Diff_base);
 
Sortie& Op_Diff_VDF_base::printOn(Sortie& s) const { return s << que_suis_je(); }
Entree& Op_Diff_VDF_base::readOn(Entree& s) { return s; }
 
void Op_Diff_VDF_base::completer()
{
  Operateur_base::completer();
  // Some operators (Axi) have no iterators in VDF... another design anomaly to be fixed someday!
  if (iter_)
    {
      const bool is_pb_multi = sub_type(Pb_Multiphase, equation().probleme());
 
      iter_->completer_();
      const Champ_Inc_base& cc = le_champ_inco ? le_champ_inco.valeur() : equation().inconnue();
      iter_->associer_champ_convecte_ou_inc(cc, nullptr);
      iter_->set_name_champ_inco(le_champ_inco ? nom_inconnue() : cc.le_nom().getString());
      iter_->set_convective_op_pb_type(false /* diff op */, is_pb_multi);
      iter_->set_multiscalar_diff(equation().diffusion_multi_scalaire());
      if (is_pb_multi && sub_type(Convection_Diffusion_Temperature_base, equation()))
        {
          const Pb_Multiphase& pbm = ref_cast(Pb_Multiphase, equation().probleme());
          if (pbm.has_correlation("Flux_parietal"))
            {
              iter_->associer_correlation_flux_parietal(pbm.get_correlation("Flux_parietal"));
              iter_->creer_champ_T_paroi_pour_flux_parietal();
            }
        }
    }
}
 
int Op_Diff_VDF_base::impr(Sortie& os) const
{
  // Some operators (Axi) have no iterators in VDF... another design anomaly to be fixed someday!
  return (bool(iter_)) ? iter_->impr(os) : 0;
}
 
/*! @brief Computes the diffusion contribution and stores it in resu
 *
 */
DoubleTab& Op_Diff_VDF_base::calculer(const DoubleTab& inco, DoubleTab& resu) const
{
  resu = 0.;
  return ajouter(inco, resu);
}
 
void Op_Diff_VDF_base::init_op_ext() const
{
  const Domaine_VDF& zvdf = iter_->domaine();
  const Domaine_Cl_VDF& zclvdf = iter_->domaine_Cl();
  op_ext = { this };      //the first op_ext is the local operator
 
  for (int n_bord = 0; n_bord < zvdf.nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = zclvdf.les_conditions_limites(n_bord);
      if (sub_type(Echange_contact_VDF, la_cl.valeur()))
        {
          const Echange_contact_VDF& cl = ref_cast(Echange_contact_VDF, la_cl.valeur());
          const Champ_front_calc& ch = ref_cast(Champ_front_calc, cl.T_autre_pb());
          const Equation_base& o_eqn = ch.equation();
          const Op_Diff_VDF_base *o_diff = &ref_cast(Op_Diff_VDF_base, o_eqn.operateur(0).l_op_base());
 
          if (std::find(op_ext.begin(), op_ext.end(), o_diff) == op_ext.end())
            op_ext.push_back(o_diff);
        }
    }
  op_ext_init_ = 1;
}
 
// Addition of the supplementary term V/(R*R) in the axisymmetric coordinate case
void Op_Diff_VDF_base::ajoute_terme_pour_axi(matrices_t matrices, DoubleTab& secmem, const tabs_t& semi_impl) const
{
  if (equation().domaine_application() == Motcle("Hydraulique")) // We are in the case of Navier_Stokes equations
    {
      const std::string& nom_inco = equation().inconnue().le_nom().getString();
      Matrice_Morse* mat = matrices.count(nom_inco) ? matrices.at(nom_inco) : nullptr;
      const DoubleTab& inco = semi_impl.count(nom_inco) ? semi_impl.at(nom_inco) : equation().inconnue().valeurs();
 
      if (Objet_U::bidim_axi == 1)
        {
          const Domaine_VDF& zvdf = iter_->domaine();
          const DoubleTab& xv = zvdf.xv();
          const IntVect& ori = zvdf.orientation();
          const IntTab& face_voisins = zvdf.face_voisins();
          const DoubleVect& volumes_entrelaces = zvdf.volumes_entrelaces();
          int face, nb_faces = zvdf.nb_faces();      //, cst;
          double db_diffusivite;
          Nom nom_eq = equation().que_suis_je();
          if ((nom_eq == "Navier_Stokes_standard") || (nom_eq == "Navier_Stokes_QC") || (nom_eq == "Navier_Stokes_FT_Disc") || (nom_eq == "QDM_Multiphase"))
            {
              const Eval_Diff_VDF& eval = dynamic_cast<const Eval_Diff_VDF&>(iter_->evaluateur());
              const Champ_base& ch_diff = eval.get_diffusivite();
              const DoubleTab& tab_diffusivite = ch_diff.valeurs();
 
              const int N = tab_diffusivite.dimension(1);
              DoubleTrav diffu_tot(zvdf.nb_elem_tot(), N);
              if (tab_diffusivite.size() == 1) diffu_tot = tab_diffusivite(0, 0);
              else diffu_tot = tab_diffusivite;
 
              for (face = 0; face < nb_faces; face++)
                for (int n = 0; n < N; n++)
                  if (ori(face) == 0)
                    {
                      const int elem1 = face_voisins(face, 0), elem2 = face_voisins(face, 1);
 
                      if (elem1 == -1) db_diffusivite = diffu_tot(elem2, n);
                      else if (elem2 == -1) db_diffusivite = diffu_tot(elem1, n);
                      else db_diffusivite = 0.5 * (diffu_tot(elem2, n) + diffu_tot(elem1, n));
 
                      double r = xv(face, 0);
                      if (r >= 1.e-24)
                        {
                          if (mat) (*mat)(N * face + n, N * face + n) += db_diffusivite * volumes_entrelaces(face) / (r * r);
                          secmem(face, n) -= inco(face, n) * db_diffusivite * volumes_entrelaces(face) / (r * r);
                        }
                    }
            }
          else if (equation().que_suis_je() == "Navier_Stokes_Interface_avec_trans_masse" || equation().que_suis_je() == "Navier_Stokes_Interface_sans_trans_masse"
                   || equation().que_suis_je() == "Navier_Stokes_Front_Tracking" || equation().que_suis_je() == "Navier_Stokes_Front_Tracking_BMOL" /* c'est quoi ce truc ???? un truc de 1900 ? */)
            {
              /* Voir le terme source axi dans Interfaces/VDF */
            }
          else
            {
              Cerr << "Problem in Op_Diff_VDF_base::ajoute_terme_pour_axi  with the equation type" << finl;
              Cerr << "No other case than Navier_Stokes_std has been foreseen" << finl;
              Process::exit();
            }
        }
    }
}
 
double Op_Diff_VDF_base::calculer_dt_stab_(const Domaine_VDF& zone_VDF) const
{
  // Computation of the stability time step:
  //
  //
  //  - The diffusivity is not uniform, therefore:
  //
  //     dt_stab = Min (1/(2*diffusivite(elem)*coeff(elem))
  //
  //     where:
  //            coeff =  1/(dx*dx) + 1/(dy*dy) + 1/(dz*dz)
  //
  //            i ranging over all mesh elements
  //
  //  Note: in hydraulics the Max is sought over the initial mesh elements
  //        (as in thermics) and not over the momentum control volumes.
  double dt_stab = DMAXFLOAT;
  const Champ_base& ch_diffu = has_champ_masse_volumique() ? diffusivite() : diffusivite_pour_pas_de_temps();
  const DoubleTab& diffu = ch_diffu.valeurs(), *alp = sub_type(Pb_Multiphase, equation().probleme()) ? &ref_cast(Pb_Multiphase, equation().probleme()).equation_masse().inconnue().passe() : nullptr;
  const bool Cdiffu = sub_type(Champ_Uniforme, ch_diffu);
 
  // If the diffusivity is variable, it must be an element-based field.
  assert(Cdiffu || diffu.size() == diffu.line_size() * zone_VDF.nb_elem());
 
  int rho_comme_diff = 0;
  if (has_champ_masse_volumique())
    {
      const DoubleTab& rho = get_champ_masse_volumique().valeurs();
      rho_comme_diff = (rho.dimension(1) == diffu.dimension(1));
    }
 
  for (int elem = 0; elem < zone_VDF.nb_elem(); elem++)
    {
      double h = 0;
      for (int d = 0 ; d < dimension; d++)
        {
          const double l = zone_VDF.dim_elem(elem, d);
          h += 1. / (l * l);
        }
      for (int n = 0; n < diffu.dimension(1); n++)
        {
          double alpha_loc = diffu(Cdiffu ? 0 : elem, n);
          if (has_champ_masse_volumique())
            {
              const DoubleTab& rho = get_champ_masse_volumique().valeurs();
              alpha_loc/= rho(elem, rho_comme_diff * n);
            }
          const double dt_loc = (alp ? (*alp)(elem, n) : 1.0) * 0.5 / ((alpha_loc + DMINFLOAT) * h);
          if (dt_loc < dt_stab) dt_stab = dt_loc;
        }
    }
 
  return Process::mp_min(dt_stab);
}