Sortie_libre_Gradient_Pression_impose.cpp

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#include <Sortie_libre_Gradient_Pression_impose.h>
#include <Domaine_Cl_dis_base.h>
#include <Navier_Stokes_std.h>
#include <Champ_Uniforme.h>
#include <Milieu_base.h>
#include <Champ_P0_VDF.h>
#include <Domaine_VDF.h>
 
Implemente_instanciable(Sortie_libre_Gradient_Pression_impose, "Frontiere_ouverte_Gradient_Pression_impose", Neumann_sortie_libre);
// XD frontiere_ouverte_gradient_pression_impose neumann frontiere_ouverte_gradient_pression_impose INHERITS_BRACE
// XD_CONT Normal imposed pressure gradient condition on the open boundary called bord (edge). This boundary condition
// XD_CONT may be only used in VDF discretization. The imposed $\partial P/\partial n$ value is expressed in Pa.m-1.
// XD attr ch front_field_base ch REQ Boundary field type.
 
Sortie& Sortie_libre_Gradient_Pression_impose::printOn(Sortie& s) const { return s << que_suis_je() << finl; }
 
Entree& Sortie_libre_Gradient_Pression_impose::readOn(Entree& s)
{
  if (app_domains.size() == 0) app_domains = { Motcle("Hydraulique"), Motcle("indetermine") };
  if (supp_discs.size() == 0) supp_discs = { Nom("VDF") };
 
  s >> le_champ_front;
  le_champ_ext.typer("Champ_front_uniforme");
  le_champ_ext->valeurs().resize(1, dimension);
  return s;
}
 
void Sortie_libre_Gradient_Pression_impose::completer()
{
  Cerr << "Sortie_libre_Gradient_Pression_impose::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_VDF& domaine_vdf = ref_cast(Domaine_VDF, eqn.domaine_dis());
  const Champ_P0_VDF& pression = ref_cast(Champ_P0_VDF, eqn_hydr.pression());
  const IntTab& face_voisins = domaine_vdf.face_voisins();
  const DoubleVect& volumes_entrelaces = domaine_vdf.volumes_entrelaces();
  const DoubleVect& face_surfaces = domaine_vdf.face_surfaces();
 
  le_dom_VDF = domaine_vdf;
  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 face;
 
  coeff.resize(nb_faces_loc);
  trace_pression_int.resize(nb_faces_loc);
 
  for (face = ndeb; face < ndeb + nb_faces_loc; face++)
    if (face_voisins(face, 0) != -1)
      coeff[face - ndeb] = volumes_entrelaces[face] / face_surfaces[face];
    else
      coeff[face - ndeb] = -volumes_entrelaces[face] / face_surfaces[face];
 
  Cerr << "Sortie_libre_Gradient_Pression_impose::completer() ok" << finl;
}
 
void Sortie_libre_Gradient_Pression_impose::mettre_a_jour(double temps)
{
  //Cerr<<"Sortie_libre_Gradient_Pression_impose::mettre_a_jour"<<finl;
  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();
 
  assert(pression_interne);
  for (int face = ndeb; face < ndeb + nb_faces_loc; face++)
    trace_pression_int[face - ndeb] = pression_interne->valeur_au_bord(face);
}
 
double Sortie_libre_Gradient_Pression_impose::flux_impose(int face) const
{
  if (le_champ_front->valeurs().size() == 1)
    return (trace_pression_int[face] + coeff[face] * le_champ_front->valeurs()(0, 0));
  else if (le_champ_front->valeurs().line_size() == 1)
    return (trace_pression_int[face] + coeff[face] * le_champ_front->valeurs()(face, 0));
  else
    Cerr << "Sortie_libre_Gradient_Pression_impose::flux_impose error" << finl;
  exit();
  return 0.;
}
 
double Sortie_libre_Gradient_Pression_impose::flux_impose(int face, int ncomp) const
{
  if (ncomp == 0) return flux_impose(face);
 
  Cerr << "Sortie_libre_Gradient_Pression_impose::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_impose::grad_P_imp(int face) const
{
  const Milieu_base& mil = mon_dom_cl_dis->equation().milieu();
  if (sub_type(Champ_Uniforme, mil.masse_volumique()))
    {
      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_impose::grad_P_imp() error" << finl;
    }
  else
    {
      //quasi-compressible
      const DoubleTab& tab_rho = mil.masse_volumique().valeurs();
      int elem = le_dom_VDF->face_voisins(face, 0);
      if (elem == -1)
        elem = le_dom_VDF->face_voisins(face, 1);
      double d_rho = tab_rho(elem);
      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_impose::grad_P_imp() error" << finl;
    }
  exit();
  return 0.;
}