Senseur_Interface.cpp

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#include <Senseur_Interface.h>
#include <Champ_base.h>
#include <TRUSTTab.h>
#include <Transport_Interfaces_FT_Disc.h>
#include <Domaine.h>
#include <Domaine_VF.h>
#include <Probleme_base.h>
#include <Param.h>
 
Implemente_instanciable(Senseur_Interface, "Senseur_Interface", Objet_U);
 
Entree& Senseur_Interface::readOn(Entree& is)
{
  Param param(que_suis_je());
  param.ajouter("equation_interface", &equation_interface_, Param::REQUIRED);
  param.ajouter("segment_senseur_1", &segment_senseur_1_, Param::REQUIRED);
  param.ajouter("segment_senseur_2", &segment_senseur_2_, Param::REQUIRED);
  param.ajouter("nb_points_tests", &nb_points_tests_, Param::REQUIRED);
  param.lire_avec_accolades_depuis(is);
 
  const int dim = dimension;
 
  if (segment_senseur_1_.size_array() != dim
      || segment_senseur_2_.size_array() != dim
      || nb_points_tests_ < 2)
    {
      Cerr << "Error: wrong segments dimension or nb_points_tests" << finl;
      Process::exit();
    }
  equation_ = ref_cast(Transport_Interfaces_FT_Disc, probleme_->get_equation_by_name(equation_interface_));
 
  return is;
}
 
Sortie& Senseur_Interface::printOn(Sortie& os) const
{
  return os;
}
 
int Senseur_Interface::calculer_position(ArrOfDouble& pos) const
{
  int i, j;
  int ok = 0;
 
  const Transport_Interfaces_FT_Disc& eq = ref_cast(Transport_Interfaces_FT_Disc, equation_.valeur());
  const Champ_base& indicatrice = eq.inconnue();
  // Recherche de la position de l'interface:
  const int dim = segment_senseur_1_.size_array();
  DoubleTab positions(nb_points_tests_, dim);
  const double facteur = 1. / (double)(nb_points_tests_-1.);
  for (j = 0; j < dim; j++)
    {
      const double x1 = segment_senseur_1_[j];
      const double x2 = segment_senseur_2_[j];
      for (i = 0; i < nb_points_tests_; i++)
        {
          double t = ((double) i) * facteur;
          positions(i,j) = x2 * t + x1 * (1. - t);
        }
    }
  IntVect num_element(nb_points_tests_);
  const Domaine& domaine = eq.domaine_dis().domaine();
  domaine.chercher_elements(positions, num_element);
  //DoubleVect dist(nb_points_tests_);
  // Invalide le numero d'element pour les elements virtuels
  const int nb_elem = domaine.nb_elem();
  for (i = 0; i < nb_points_tests_; i++)
    {
      const int elem = num_element[i];
      if (elem >= 0 && elem < nb_elem)
        {
          const double ind = indicatrice.valeurs()(elem);
          if (ind > 0. && ind < 1.) // On a trouve l'interface !
            break;
        }
    }
  double t_injection; // Entre 0 et 1, coordonnee de l'interface le long du segment
  const DoubleTab& xp = ref_cast(Domaine_VF, eq.domaine_dis()).xp();
  // No need to update distance and normal, they are already up-to-date.
  const DoubleTab& normale_interf = eq.get_normale_interface().valeurs();
  const DoubleTab& distance_interf = eq.get_distance_interface().valeurs();
  if (i < nb_points_tests_)
    {
      const int elem = num_element[i];
      double s1s2_scal_n = 0.; // produit scalaire entre la normale unitaire a l'interface et le vecteur "segment"
      double norme2_s1s2 = 0.;
      double s1s2_scal_s1elem = 0.;
      for (j = 0; j < dim; j++)
        {
          double s1s2 = segment_senseur_2_[j] - segment_senseur_1_[j];
          s1s2_scal_n += s1s2 * normale_interf(elem, j);
          norme2_s1s2 += s1s2 * s1s2;
          s1s2_scal_s1elem += s1s2 * (xp(elem, j) - segment_senseur_1_[j]);
        }
      t_injection = s1s2_scal_s1elem / norme2_s1s2 - distance_interf(elem) / s1s2_scal_n;
    }
  else
    {
      t_injection = 1.e30;
    }
  // Quel processeur a trouve une maille avec l'interface ?
  t_injection = mp_min(t_injection);
  if (t_injection < 0.99e30)
    {
      pos.resize_array(dim);
      for (i = 0; i < dim; i++)
        {
          const double x1 = segment_senseur_1_[i];
          const double x2 = segment_senseur_2_[i];
          const double x = x2 * t_injection + x1 * (1. - t_injection);
          pos[i] = x;
          ok = 1;
        }
    }
  else
    {
      pos = segment_senseur_1_;
      ok = 0;
    }
  return ok;
}