Sortie_libre_Gradient_Pression_libre_VEFPreP1B.cpp

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#include <Sortie_libre_Gradient_Pression_libre_VEFPreP1B.h>
#include <Champ_P1_isoP1Bulle.h>
#include <Domaine_Cl_dis_base.h>
#include <Navier_Stokes_std.h>
#include <Champ_Uniforme.h>
#include <distances_VEF.h>
#include <Milieu_base.h>
 
Implemente_instanciable(Sortie_libre_Gradient_Pression_libre_VEFPreP1B, "Frontiere_ouverte_Gradient_Pression_libre_VEFPreP1B", Neumann_sortie_libre);
// XD frontiere_ouverte_gradient_pression_libre_vefprep1b neumann frontiere_ouverte_gradient_pression_libre_vefprep1b INHERITS_BRACE Class for outlet boundary condition in VEF P1B/P1NC like Orlansky.
 
 
Sortie& Sortie_libre_Gradient_Pression_libre_VEFPreP1B::printOn(Sortie& s) const { return s << que_suis_je() << finl; }
 
Entree& Sortie_libre_Gradient_Pression_libre_VEFPreP1B::readOn(Entree& is)
{
  if (app_domains.size() == 0) app_domains = { Motcle("Hydraulique"), Motcle("indetermine") };
  if (supp_discs.size() == 0) supp_discs = { Nom("VEFPreP1B") };
 
  le_champ_front.typer("Champ_front_uniforme");
  le_champ_front->valeurs().resize(1, dimension);
  le_champ_front->fixer_nb_comp(1);
  le_champ_ext.typer("Champ_front_uniforme");
  le_champ_ext->valeurs().resize(1, dimension);
  return is;
}
 
void Sortie_libre_Gradient_Pression_libre_VEFPreP1B::completer()
{
 
  Cerr << "Sortie_libre_Gradient_Pression_libre_VEFPreP1B::completer()" << finl;
  const Domaine_Cl_dis_base& le_dom_Cl = domaine_Cl_dis();
  const Equation_base& eqn = le_dom_Cl.equation();
  const Navier_Stokes_std& eqn_hydr = ref_cast(Navier_Stokes_std, eqn);
 
  const Domaine_VEF& mon_dom_VEF = ref_cast(Domaine_VEF, eqn.domaine_dis());
 
  const Champ_P1_isoP1Bulle& pression = ref_cast(Champ_P1_isoP1Bulle, eqn_hydr.pression());
 
  const IntTab& face_voisins = mon_dom_VEF.face_voisins();
 
  pression_interne = pression;
 
  const Front_VF& le_bord = ref_cast(Front_VF, frontiere_dis());
  int nb_faces_loc = le_bord.nb_faces();
 
  int ndeb = le_bord.num_premiere_face();
  int nfin = ndeb + nb_faces_loc;
  int face;
  coeff.resize(nb_faces_loc);
 
  if (dimension == 2)
    for (face = ndeb; face < nfin; face++)
      {
        int elem = face_voisins(face, 0);
        coeff[face - ndeb] = distance_2D(face, elem, mon_dom_VEF) * 3.;
      }
  if (dimension == 3)
    for (face = ndeb; face < nfin; face++)
      {
        int elem = face_voisins(face, 0);
        coeff[face - ndeb] = distance_3D(face, elem, mon_dom_VEF) * 4.;
      }
 
  pression_temps_moins_un.resize(nb_faces_loc);
  pression_temps_moins_deux.resize(nb_faces_loc);
  pression_moins_un_temps_moins_un.resize(nb_faces_loc);
  pression_moins_un_temps_moins_deux.resize(nb_faces_loc);
  pression_moins_deux_temps_moins_un.resize(nb_faces_loc);
  pression_moins_un.resize(nb_faces_loc, 1);
  pression_moins_deux.resize(nb_faces_loc, 1);
 
  Pimp.resize(nb_faces_loc);
 
  Cerr << "Sortie_libre_Gradient_Pression_libre_VEFPreP1B::completer() ok" << finl;
}
 
int Sortie_libre_Gradient_Pression_libre_VEFPreP1B::initialiser(double temps)
{
 
  int ok = Cond_lim_base::initialiser(temps);
 
  const Front_VF& le_bord = ref_cast(Front_VF, frontiere_dis());
 
  int nb_faces_loc = le_bord.nb_faces();
  int ndeb = le_bord.num_premiere_face();
  int nfin = ndeb + nb_faces_loc;
 
  int face, face_loc;
 
  for (face = ndeb; face < nfin; face++)
    {
      face_loc = face - ndeb;
      Pimp[face_loc] = pression_interne->valeur_au_bord(face);
      pression_moins_un(face_loc, 0) = Pimp[face_loc];
      pression_moins_deux(face_loc, 0) = Pimp[face_loc];
    }
 
  pression_moins_un_temps_moins_un = Pimp;
  pression_temps_moins_un = Pimp;
  pression_temps_moins_deux = Pimp;
  pression_moins_un_temps_moins_deux = Pimp;
  pression_moins_deux_temps_moins_un = Pimp;
 
  return ok;
}
 
void Sortie_libre_Gradient_Pression_libre_VEFPreP1B::mettre_a_jour(double temps)
{
 
  const Domaine_Cl_dis_base& le_dom_Cl = domaine_Cl_dis();
  const Equation_base& eqn = le_dom_Cl.equation();
  const Domaine_VEF& mon_dom_VEF = ref_cast(Domaine_VEF, eqn.domaine_dis());
  const DoubleTab& face_normale = mon_dom_VEF.face_normales();
  const Front_VF& le_bord = ref_cast(Front_VF, frontiere_dis());
 
  int nb_faces_loc = le_bord.nb_faces();
  int ndeb = le_bord.num_premiere_face();
  int nfin = ndeb + nb_faces_loc;
 
  int face, face_loc, j;
 
  const DoubleTab& xv = mon_dom_VEF.xv();
 
  DoubleTab geom;
  geom.resize(nb_faces_loc, dimension);
 
  Cond_lim_base::mettre_a_jour(temps);
 
  for (face = ndeb; face < nfin; face++)
    {
      face_loc = face - ndeb;
 
      pression_temps_moins_deux(face_loc) = pression_temps_moins_un(face_loc);
      pression_temps_moins_un(face_loc) = Pimp(face_loc);
      pression_moins_un_temps_moins_deux(face_loc) = pression_moins_un_temps_moins_un(face_loc);
      pression_moins_un_temps_moins_un(face_loc) = pression_moins_un(face_loc, 0);
      pression_moins_deux_temps_moins_un(face_loc) = pression_moins_deux(face_loc, 0);
    }
 
  double orient;
  for (face = ndeb; face < nfin; face++)
    {
      orient = 0.;
      for (j = 0; j < dimension; j++)
        {
          orient += (face_normale(face, j) * face_normale(face, j));
        }
 
      orient = sqrt(orient);
 
      for (j = 0; j < dimension; j++)
        {
          geom(face - ndeb, j) = xv(face, j);
          geom(face - ndeb, j) -= face_normale(face, j) / orient * coeff(face - ndeb);
          ;
        }
 
    }
 
  pression_interne->valeur_aux(geom, pression_moins_un);
 
  for (face = ndeb; face < nfin; face++)
    {
      orient = 0.;
      for (j = 0; j < dimension; j++)
        {
          orient += (face_normale(face, j) * face_normale(face, j));
        }
 
      orient = sqrt(orient);
 
      for (j = 0; j < dimension; j++)
        {
          geom(face - ndeb, j) = xv(face, j);
          geom(face - ndeb, j) -= face_normale(face, j) / orient * 2. * coeff(face - ndeb);
        }
 
    }
 
  pression_interne->valeur_aux(geom, pression_moins_deux);
 
  double VPhiP;
 
  for (face = ndeb; face < nfin; face++)
    {
      face_loc = face - ndeb;
      double pre_m_un_t_m_deux = pression_moins_un_temps_moins_deux(face_loc);
      double pre_m_deux_t_m_un = pression_moins_deux_temps_moins_un(face_loc);
      double pre_m_un = pression_moins_un(face_loc, 0);
 
      if (pre_m_un_t_m_deux == pre_m_un)
        VPhiP = 0.;
      else
        VPhiP = (pre_m_un_t_m_deux - pre_m_un) / (pre_m_un + pre_m_un_t_m_deux - 2 * pre_m_deux_t_m_un);
 
      if (VPhiP <= 1.e-24)
        VPhiP = 0.0;
      if (VPhiP > 1.)
        VPhiP = 1.0;
      assert(VPhiP < 1.e12);
 
      Pimp[face_loc] = (1 - VPhiP) / (1 + VPhiP) * pression_temps_moins_un(face_loc) + (2 * VPhiP) / (1 + VPhiP) * pression_moins_un(face_loc, 0);
 
    }
 
}
 
double Sortie_libre_Gradient_Pression_libre_VEFPreP1B::flux_impose(int face) const
{
  return Pimp[face];
}
 
double Sortie_libre_Gradient_Pression_libre_VEFPreP1B::flux_impose(int face, int ncomp) const
{
  return flux_impose(face);
}
 
double Sortie_libre_Gradient_Pression_libre_VEFPreP1B::Grad_P_lib_VEFPreP1B(int face) const
{
  const Milieu_base& mil = mon_dom_cl_dis->equation().milieu();
  const Champ_Uniforme& rho = ref_cast(Champ_Uniforme, mil.masse_volumique());
  double d_rho = rho.valeurs()(0, 0);
  if (le_champ_front->valeurs().size() == 1)
    return le_champ_front->valeurs()(0, 0) / d_rho;
  else if (le_champ_front->valeurs().dimension(1) == 1)
    return le_champ_front->valeurs()(face, 0) / d_rho;
  else
    Cerr << "Sortie_libre_Gradient_Pression_libre_VEFPreP1B::Grad_P_lib_VEFPreP1B() erreur" << finl;
  exit();
  return 0.;
}