Sortie_libre_pression_imposee_QC.cpp

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#include <Sortie_libre_pression_imposee_QC.h>
#include <Champ_Uniforme.h>
#include <Equation_base.h>
#include <Milieu_base.h>
#include <Motcle.h>
 
Implemente_instanciable_sans_constructeur(Sortie_libre_pression_imposee_QC, "Frontiere_ouverte_pression_totale_imposee", Neumann_sortie_libre);
 
Sortie_libre_pression_imposee_QC::Sortie_libre_pression_imposee_QC() : Pthn(1.e5), d_rho(-1) { }
 
Sortie& Sortie_libre_pression_imposee_QC::printOn(Sortie& s) const { return s << que_suis_je() << finl; }
 
Entree& Sortie_libre_pression_imposee_QC::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 Completes the boundary conditions.
 *
 * Sets d_rho to the constant density of the physical medium of the equation.
 *
 */
void Sortie_libre_pression_imposee_QC::completer()
{
  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());
      d_rho = rho.valeurs()(0, 0);
    }
  else
    d_rho = -1;
}
 
/*! @brief Returns the imposed flux value for the i-th component of the field representing the flux at the boundary.
 *
 * The boundary field is considered constant over all elements of the boundary.
 * The imposed flux value equals the (constant) boundary field value divided by d_rho.
 *
 * @param i Index along the first dimension of the field.
 * @return Imposed value for the specified field component.
 * @throws Second dimension of the boundary field greater than 1.
 */
double Sortie_libre_pression_imposee_QC::flux_impose(int i) const
{
  const Milieu_base& mil = mon_dom_cl_dis->equation().milieu();
  const Champ_base& rho = mil.masse_volumique();
  double rho_;
  if (d_rho == -1)
    rho_ = rho.valeurs()(i);
  else
    rho_ = d_rho;
 
  if (le_champ_front->valeurs().size() == 1)
    return (le_champ_front->valeurs()(0, 0) - Pthn) / rho_;
  else if (le_champ_front->valeurs().dimension(1) == 1)
    return (le_champ_front->valeurs()(i, 0) - Pthn) / rho_;
  else
    Cerr << "Neumann::flux_impose error" << finl;
 
  Process::exit();
  return 0.;
}
 
/*! @brief Returns the imposed flux value for the (i,j)-th component of the field representing the flux at the boundary.
 *
 * The boundary field is NOT constant over all elements of the boundary.
 *
 * @param i Index along the first dimension of the field.
 * @param j Index along the second dimension of the field.
 * @return Imposed value for the specified field component.
 */
double Sortie_libre_pression_imposee_QC::flux_impose(int i, int j) const
{
  const Milieu_base& mil = mon_dom_cl_dis->equation().milieu();
  const Champ_base& rho = mil.masse_volumique();
  double rho_;
 
  if (d_rho == -1)
    rho_ = rho.valeurs()(i);
  else
    rho_ = d_rho;
 
  if (le_champ_front->valeurs().dimension(0) == 1)
    return (le_champ_front->valeurs()(0, j) - Pthn) / rho_;
  else
    return (le_champ_front->valeurs()(i, j) - Pthn) / rho_;
}