Sortie_libre_Gradient_Pression_libre_VEF.cpp

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#include <Sortie_libre_Gradient_Pression_libre_VEF.h>
#include <Domaine_Cl_dis_base.h>
#include <Navier_Stokes_std.h>
#include <Champ_Uniforme.h>
#include <distances_VEF.h>
#include <Champ_P0_VEF.h>
#include <Milieu_base.h>
#include <Domaine_VEF.h>
 
Implemente_instanciable(Sortie_libre_Gradient_Pression_libre_VEF, "Frontiere_ouverte_Gradient_Pression_libre_VEF", Neumann_sortie_libre);
// XD frontiere_ouverte_gradient_pression_libre_vef neumann frontiere_ouverte_gradient_pression_libre_vef INHERITS_BRACE
// XD_CONT Class for outlet boundary condition in VEF like Orlansky. There is no reference for pressure for theses
// XD_CONT boundary conditions so it is better to add pressure condition (with Frontiere_ouverte_pression_imposee) on
// XD_CONT one or two cells (for symmetry in a channel) of the boundary where Orlansky conditions are imposed.
 
 
Sortie& Sortie_libre_Gradient_Pression_libre_VEF::printOn(Sortie& s) const { return s << que_suis_je() << finl; }
 
Entree& Sortie_libre_Gradient_Pression_libre_VEF::readOn(Entree& s)
{
  if (app_domains.size() == 0) app_domains = { Motcle("Hydraulique"), Motcle("indetermine") };
  if (supp_discs.size() == 0) supp_discs = { Nom("VEF") };
 
  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 s;
}
 
void Sortie_libre_Gradient_Pression_libre_VEF::completer()
{
  Cerr << "Sortie_libre_Gradient_Pression_libre_VEF::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& le_dom_VEF = ref_cast(Domaine_VEF,eqn.domaine_dis());
 
  const Champ_P0_VEF& pression = ref_cast(Champ_P0_VEF, eqn_hydr.pression());
 
  pression_interne = pression;
 
  const Front_VF& le_bord = ref_cast(Front_VF, frontiere_dis());
  int nb_faces_loc = le_bord.nb_faces();
 
  trace_pression_int.resize(nb_faces_loc);
 
  Cerr << "Sortie_libre_Gradient_Pression_libre_VEF::completer() ok" << finl;
}
 
int Sortie_libre_Gradient_Pression_libre_VEF::initialiser(double temps)
{
 
  int ok = Cond_lim_base::initialiser(temps);
 
  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 IntTab& face_voisins = mon_dom_VEF.face_voisins();
  //      const Domaine_Cl_VEF& domaine_Cl_VEF = ref_cast(Domaine_Cl_VEF,mon_dom_cl_dis.valeur());
  //      const DoubleVect& volumes_entrelaces_Cl = domaine_Cl_VEF.volumes_entrelaces_Cl();
  //      const DoubleTab& face_normale = le_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;
  coeff.resize(nb_faces_loc);
  if (dimension == 2)
    for (face = ndeb; face < nfin; face++)
      {
        int elem = face_voisins(face, 0);
        if (elem != -1)
          coeff[face - ndeb] = distance_2D(face, elem, mon_dom_VEF);
        else
          {
            elem = face_voisins(face, 1);
            coeff[face - ndeb] = -distance_2D(face, elem, mon_dom_VEF);
          }
      }
  if (dimension == 3)
    for (face = ndeb; face < nfin; face++)
      {
        int elem = face_voisins(face, 0);
        if (elem != -1)
          coeff[face - ndeb] = distance_3D(face, elem, mon_dom_VEF);
        else
          {
            elem = face_voisins(face, 1);
            coeff[face - ndeb] = -distance_3D(face, elem, mon_dom_VEF);
          }
      }
  return ok;
}
 
void Sortie_libre_Gradient_Pression_libre_VEF::mettre_a_jour(double temps)
{
  Cond_lim_base::mettre_a_jour(temps);
 
  const Front_VF& le_bord = ref_cast(Front_VF, frontiere_dis());
  int ndeb = le_bord.num_premiere_face();
  int nb_faces_loc = le_bord.nb_faces();
  int nfin = ndeb + nb_faces_loc;
 
  assert(pression_interne);
  for (int face = ndeb; face < nfin; face++)
    {
      trace_pression_int[face - ndeb] = pression_interne->valeur_au_bord(face);
    }
 
}
 
double Sortie_libre_Gradient_Pression_libre_VEF::flux_impose(int face) const
{
  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 IntTab& face_voisins = mon_dom_VEF.face_voisins();
  //  const Domaine_Cl_VEF& domaine_Cl_VEF = ref_cast(Domaine_Cl_VEF,mon_dom_cl_dis.valeur());
  //  const Front_VF& le_bord = ref_cast(Front_VF,frontiere_dis());
  const IntTab& elem_faces = mon_dom_VEF.elem_faces();
  const DoubleTab& face_normales = mon_dom_VEF.face_normales();
  const Champ_P0_VEF& pre = ref_cast(Champ_P0_VEF, eqn_hydr.pression());
 
  double Pimp, diff, grad;
 
  int elem1, elem2, face_adj, face_face_adj;
 
  double a1 = trace_pression_int[face];
  double a2 = coeff[face];
 
  double a3 = 0.;
 
  elem1 = face_voisins(face, 0);
 
  for (face_adj = 0; face_adj < dimension; face_adj++)
    {
      face_face_adj = elem_faces(elem1, face_adj);
 
      elem2 = face_voisins(face_face_adj, 0);
      if (elem2 != elem1)
        {
          diff = pre.valeurs()(elem2) - pre.valeurs()(elem1);
 
          for (int comp = 0; comp < dimension; comp++)
            {
              grad = diff * face_normales(face_face_adj, comp);
              a3 += grad;
            }
        }
    }
 
  a3 /= double(dimension);
  Pimp = a1 + a2 * a3;
  return Pimp;
 
}
 
double Sortie_libre_Gradient_Pression_libre_VEF::flux_impose(int face, int ncomp) const
{
  if (ncomp == 0) return flux_impose(face);
 
  Cerr << "Sortie_libre_Gradient_Pression_libre_VEF::flux_impose(int  , int )" << finl;
  Cerr << "Only the normal component of the gradient can be imposed" << finl;
  Process::exit();
  return 0.;
}
 
double Sortie_libre_Gradient_Pression_libre_VEF::Grad_P_lib_VEF(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().line_size() == 1)
    return le_champ_front->valeurs()(face, 0) / d_rho;
  else
    Cerr << "Sortie_libre_Gradient_Pression_libre_VEF::Grad_P_lib_VEF() error" << finl;
  exit();
  return 0.;
}