Sortie_libre_pression_imposee.cpp

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#include <Sortie_libre_pression_imposee.h>
#include <Fluide_Incompressible.h>
#include <Navier_Stokes_std.h>
#include <Champ_Uniforme.h>
#include <Equation_base.h>
 
Implemente_instanciable_sans_constructeur(Sortie_libre_pression_imposee, "Frontiere_ouverte_pression_imposee", Neumann_sortie_libre);
// XD frontiere_ouverte_pression_imposee neumann frontiere_ouverte_pression_imposee INHERITS_BRACE Imposed pressure
// XD_CONT condition at the open boundary called bord (edge). The imposed pressure field is expressed in Pa.
// XD attr ch front_field_base ch REQ Boundary field type.
 
 
Sortie_libre_pression_imposee::Sortie_libre_pression_imposee() : d_rho(-123.) { }
 
Sortie& Sortie_libre_pression_imposee::printOn(Sortie& s) const { return s << que_suis_je() << finl; }
 
Entree& Sortie_libre_pression_imposee::readOn(Entree& s)
{
  if (app_domains.size() == 0) app_domains = { Motcle("Hydraulique"), Motcle("indetermine") };
 
  s >> le_champ_front;
  le_champ_ext.typer("Champ_front_uniforme");
  le_champ_ext->valeurs().resize(1, dimension);
  return s;
}
 
/*! @brief Complete les conditions aux limites.
 *
 * Impose la masse volumique constante du milieu
 *     physique de l'equation a d_rho.
 *
 */
void Sortie_libre_pression_imposee::completer()
{
  const Milieu_base& mil = mon_dom_cl_dis->equation().milieu();
  if (sub_type(Fluide_Incompressible,mil) && mon_dom_cl_dis->equation().que_suis_je() != "QDM_Multiphase")
    {
      if (sub_type(Champ_Uniforme, mil.masse_volumique()))
        {
          const Champ_Uniforme& rho = ref_cast(Champ_Uniforme, mil.masse_volumique());
          d_rho = rho.valeurs()(0, 0);
        }
      else
        {
          d_rho = -1;
 
          // GF dans les cas a rho non const QC FT on ne doit pas diviser par rho on met d_rho=1
          d_rho = 1;
        }
    }
  else
    d_rho = 1;
}
 
/*! @brief Renvoie la valeur du flux impose sur la i-eme composante du champ representant le flux a la frontiere.
 *
 *     Le champ a la frontiere est considere constant sur tous les elements de la frontiere.
 *     La valeur du flux impose a la frontiere est egale a la valeur du champ (considere constant) a la frontiere divise par d_rho.
 *
 * @param (int i) indice suivant la premiere dimension du champ
 * @return (double) la valeur imposee sur la composante du champ specifiee
 * @throws deuxieme dimension du champ de frontiere superieur a 1
 */
double Sortie_libre_pression_imposee::flux_impose(int i) const
{
  return flux_impose(i,0);
}
 
/*! @brief Renvoie la valeur du flux impose sur la (i,j)-eme composante du champ representant le flux a la frontiere.
 *
 *     Le champ a la frontiere n'est PAS constant sur tous les elements
 *     la frontiere.
 *
 * @param (int i) indice suivant la premiere dimension du champ
 * @param (int j) indice suivant la deuxieme dimension du champ
 * @return (double) la valeur imposee sur la composante du champ specifiee
 */
double Sortie_libre_pression_imposee::flux_impose(int i, int j) const
{
  const Milieu_base& mil = mon_dom_cl_dis->equation().milieu();
  double rho_;
  assert(!est_egal(d_rho, -123.));
  if (d_rho == -1)
    {
      const Champ_base& rho = mil.masse_volumique();
      rho_ = rho.valeurs()(i);
    }
  else
    rho_ = d_rho;
 
  if (le_champ_front->valeurs().dimension(0) == 1)
    return le_champ_front->valeurs()(0, j) / rho_;
  else if (j < le_champ_front->valeurs().dimension(1))
    return le_champ_front->valeurs()(i, j) / rho_;
  else
    Cerr << "Sortie_libre_pression_imposee::flux_impose erreur" << finl;
  Process::exit();
  return 0.;
}