EDO_Pression_th_VDF_Gaz_Parfait.cpp

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#include <EDO_Pression_th_VDF_Gaz_Parfait.h>
#include <Fluide_Quasi_Compressible.h>
#include <Neumann_sortie_libre.h>
#include <Schema_Temps_base.h>
#include <Navier_Stokes_std.h>
#include <Domaine_Cl_VDF.h>
#include <Loi_Etat_GP_QC.h>
#include <Domaine_VDF.h>
#include <Dirichlet.h>
#include <TRUSTTrav.h>
 
Implemente_instanciable(EDO_Pression_th_VDF_Gaz_Parfait, "EDO_Pression_th_VDF_Gaz_Parfait", EDO_Pression_th_VDF);
 
Sortie& EDO_Pression_th_VDF_Gaz_Parfait::printOn(Sortie& os) const { return os << que_suis_je() << finl; }
 
Entree& EDO_Pression_th_VDF_Gaz_Parfait::readOn(Entree& is) { return is; }
 
/*! @brief Solves the ODE for the thermodynamic pressure.
 *
 * @param Pth_n pressure at the previous time step
 * @return new value of the thermodynamic pressure
 */
double EDO_Pression_th_VDF_Gaz_Parfait::resoudre(double Pth_n)
{
  int traitPth = le_fluide_->getTraitementPth();
  const DoubleTab& tempnp1 = le_fluide_->inco_chaleur().valeurs();       //current
  if (traitPth == 0)
    {
      Cerr << "Selecting thermodynamic pressure treatment " << finl;
      int n_bord;
      traitPth = 1;
      for (n_bord = 0; n_bord < le_dom->nb_front_Cl(); n_bord++)
        {
          const Cond_lim& la_cl = le_dom_Cl->les_conditions_limites(n_bord);
          if (sub_type(Neumann_sortie_libre, la_cl.valeur()))
            {
              traitPth = 2;
              return Pth_n;
            }
        }
    }
 
  double dt = le_fluide_->vitesse().equation().schema_temps().pas_de_temps();
  if (traitPth == 2)   //Cerr << "constant treatment" << finl;
    {
      return Pth_n;
    }
  else if (traitPth == 1)
    {
      const DoubleTab& tempn = le_fluide_->inco_chaleur().passe();
      double cn1 = 0, cn = 0, v;
      int elem, nb_elem = le_dom->nb_elem();
      for (elem = 0; elem < nb_elem; elem++)
        {
          v = le_dom->volumes(elem);
          cn1 += v / tempnp1(elem);
          cn += v / tempn(elem);
        }
      int n_bord;
 
      double cm = 0;
      const IntTab& face_voisins = le_dom->face_voisins();
      const DoubleVect& Surface = le_dom->face_surfaces();
      // not the correct velocity, but attempting this approximation
      const IntVect& orientation = le_dom->orientation();
      for (n_bord = 0; n_bord < le_dom->nb_front_Cl(); n_bord++)
        {
          const Cond_lim_base& la_cl = le_dom_Cl->les_conditions_limites(n_bord).valeur();
          if (sub_type(Dirichlet, la_cl))
            {
              const Dirichlet& diri = ref_cast(Dirichlet, la_cl);
              const Front_VF& la_front_dis = ref_cast(Front_VF, la_cl.frontiere_dis());
              int ndeb = la_front_dis.num_premiere_face();
              int nfin = ndeb + la_front_dis.nb_faces();
              for (int num_face = ndeb; num_face < nfin; num_face++)
                {
                  int n0 = face_voisins(num_face, 0);
                  double S = Surface(num_face);
                  if (n0 == -1)
                    {
                      n0 = face_voisins(num_face, 1);
                      S *= -1;
                    }
                  cm += S / tempnp1(n0) * diri.val_imp(num_face - ndeb, orientation(num_face));
                }
            }
 
          else if (sub_type(Neumann_sortie_libre, la_cl))
            {
              Cerr << la_cl.que_suis_je() << " is incompatible with the conservation_masse treatment for now" << finl;
              abort();
            }
        }
 
      // Optimization: combine 3 mp_sum into 1 collective call
      double cnt = cn, cn1t = cn1, cmt = cm;
      mp_sum_for_each(cnt, cn1t, cmt);
      double Pt = Pth_n * cnt / cn1t / (1 + dt / cn1t * cmt);
      return Pt;
    }
  Cerr << " Utilisez traitement conservation_masse ou constant " << finl;
  abort();
  // ODE treatment ???
  int n_bord;
  for (n_bord = 0; n_bord < le_dom->nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = le_dom_Cl->les_conditions_limites(n_bord);
      if (sub_type(Neumann_sortie_libre, la_cl.valeur()))
        return Pth_n;
 
    }
  Cerr << " The code here is incorrect !!!!" << finl;
  Cerr << " Blocking for now" << finl;
  assert(0);
  exit();
  const DoubleTab& tab_vit = ref_cast(Navier_Stokes_std,le_fluide_->vitesse().equation()).vitesse().valeurs();
  const DoubleTab& tempn = le_fluide_->inco_chaleur().passe();        //previous
  const DoubleTab& tab_rho = le_fluide_->masse_volumique().valeurs();    //current
 
  Cerr << "---EDO : Tnp1=" << tempnp1(0) << " Tn=" << tempn(0) << finl;
 
  int elem, nb_elem = le_dom->nb_elem();
  double V = 0; //mesure du domaine
  double F = 0; //integrale du gradient de U
  double S = 0; //second membre
 
  //double Pth1 = le_fluide_->pression_th1();
 
  double v;
 
  const IntTab& elem_faces = le_dom->elem_faces();
  DoubleTrav divU(tab_vit.dimension(0));
  ref_cast(Navier_Stokes_std,le_fluide_->vitesse().equation()).operateur_divergence().calculer(tab_vit, divU);
  DoubleTrav gradT(tab_vit.dimension(0));
  DoubleTrav Tstar(tab_vit.dimension(0));
  for (elem = 0; elem < nb_elem; elem++)
    {
      Tstar(elem) = .5 * (tempn(elem) + tempnp1(elem));
    }
  calculer_grad(Tstar, gradT);
  DoubleTab u_gradT(nb_elem);
  int f1, f2, i;
  for (elem = 0; elem < nb_elem; elem++)
    {
      u_gradT(elem) = 0;
      for (i = 0; i < dimension; i++)
        {
          f1 = elem_faces(elem, i);
          f2 = elem_faces(elem, i + dimension);
          //u_gradT(elem) += .25* (gradT(f1)+gradT(f2)) * (tab_vit(f1)+tab_vit(f2));
          u_gradT(elem) += .5 * (gradT(f1) * tab_vit(f1) + gradT(f2) * tab_vit(f2));
        }
    }
 
  for (elem = 0; elem < nb_elem; elem++)
    {
      v = le_dom->volumes(elem);
      V += v;
 
      S += v * tab_rho(elem) * ((tempnp1(elem) - tempn(elem)) / dt + u_gradT(elem));
    }
 
  //  int nb_cond_lim = le_dom->nb_front_Cl();
  int ndeb, nfin, face;
  double norm;
  //DoubleVect norme(dimension);
  for (n_bord = 0; n_bord < le_dom->nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = le_dom_Cl->les_conditions_limites(n_bord);
      const Front_VF& frontiere_dis = ref_cast(Front_VF,la_cl->frontiere_dis());
      ndeb = frontiere_dis.num_premiere_face();
      nfin = ndeb + frontiere_dis.nb_faces();
      //if (sub_type(Neumann_sortie_libre, la_cl.valeur()) || sub_type(Dirichlet_entree_fluide, la_cl.valeur())) {
      for (face = ndeb; face < nfin; face++)
        {
          elem = le_dom->face_voisins(face, 0);
          norm = le_dom->face_surfaces(face);
          if (elem == -1)
            {
              elem = le_dom->face_voisins(face, 1);
              norm *= -1;
            }
          //compute F=Sum(div(U))
          F += tab_vit(face) * norm;
          //}
        }
    }
  const Loi_Etat_GP_QC& loi_ = ref_cast(Loi_Etat_GP_QC, le_fluide_->loi_etat().valeur());
  S *= loi_.R();
 
  double Pth = (1. / (V / dt + F / 2.)) * ((V / dt - F / 2.) * Pth_n + S);
 
  Cerr << "Recomputed thermodynamic pressure = " << Pth << finl;
 
  //return Pth1;
  return Pth;
}
 
void EDO_Pression_th_VDF_Gaz_Parfait::resoudre(DoubleTab& Pth_n)
{
  const int traitPth = le_fluide_->getTraitementPth();
  if (traitPth == 2)
    return; // nothing to do
  else if (traitPth == 0)
    {
      for (int n_bord = 0; n_bord < le_dom->nb_front_Cl(); n_bord++)
        {
          const Cond_lim& la_cl = le_dom_Cl->les_conditions_limites(n_bord);
          if (sub_type(Neumann_sortie_libre, la_cl.valeur()))
            return; // nothing to do
        }
 
      Cerr << "EDO_Pression_th_VDF_Gaz_Parfait::" << __func__ << " not yet coded ! Call the 911 !!" << finl;
      Process::exit();
    }
  else
    {
      const DoubleTab& tempnp1 = le_fluide_->inco_chaleur().valeurs(); //current
      const DoubleTab& tempn = le_fluide_->inco_chaleur().passe();
      const double dt = le_fluide_->vitesse().equation().schema_temps().pas_de_temps();
 
      double cn1 = 0., cn = 0., v = -123.;
 
      for (int elem = 0; elem < le_dom->nb_elem(); elem++)
        {
          v = le_dom->volumes(elem);
          cn1 += v / tempnp1(elem);
          cn += v / tempn(elem);
        }
 
      double cm = 0.;
      const IntTab& face_voisins = le_dom->face_voisins();
      const DoubleVect& Surface = le_dom->face_surfaces();
      // not the correct velocity, but attempting this approximation
      const IntVect& orientation = le_dom->orientation();
      for (int n_bord = 0; n_bord < le_dom->nb_front_Cl(); n_bord++)
        {
          const Cond_lim_base& la_cl = le_dom_Cl->les_conditions_limites(n_bord).valeur();
          if (sub_type(Dirichlet, la_cl))
            {
              const Dirichlet& diri = ref_cast(Dirichlet, la_cl);
              const Front_VF& la_front_dis = ref_cast(Front_VF, la_cl.frontiere_dis());
              int ndeb = la_front_dis.num_premiere_face();
              int nfin = ndeb + la_front_dis.nb_faces();
              for (int num_face = ndeb; num_face < nfin; num_face++)
                {
                  int n0 = face_voisins(num_face, 0);
                  double S = Surface(num_face);
                  if (n0 == -1)
                    {
                      n0 = face_voisins(num_face, 1);
                      S *= -1;
                    }
                  cm += S / tempnp1(n0) * diri.val_imp(num_face - ndeb, orientation(num_face));
                }
            }
 
          else if (sub_type(Neumann_sortie_libre, la_cl))
            {
              Cerr << la_cl.que_suis_je() << " is incompatible with the conservation_masse treatment for now" << finl;
              Process::exit();
            }
        }
 
      // Optimization: combine 3 mp_sum into 1 collective call
      double cnt = cn, cn1t = cn1, cmt = cm;
      mp_sum_for_each(cnt, cn1t, cmt);
 
      for (int elem = 0; elem < le_dom->nb_elem(); elem++)
        Pth_n(elem) = Pth_n(elem) * cnt / cn1t / (1. + dt / cn1t * cmt);
    }
}