QDM_Multiphase.h

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#ifndef QDM_Multiphase_included
#define QDM_Multiphase_included
 
#include <Operateur_Evanescence.h>
#include <Navier_Stokes_std.h>
#include <vector>
 
/*! @brief Carries the terms of the momentum equation for multiphase flow without turbulence modelling.
 *
 *     The quasi-compressible fluid assumption is used.
 *     Under these assumptions, the following form of the Navier-Stokes equations is used:
 *        DU/dt = div(viscous term) - gradP/rho + sources/rho
 *        div U = W
 *     where DU/dt : material derivative of velocity
 *           rho   : density
 *     Note: the implementation allows individual terms (viscous, convective, source) to be neglected.
 *     The unknown is the velocity field.
 *
 * @sa Equation_base Pb_Thermohydraulique_QC Navier_Stokes_std
 */
class QDM_Multiphase : public Navier_Stokes_std
{
  Declare_instanciable(QDM_Multiphase);
 
public :
 
  void set_param(Param& param) const override;
  int lire_motcle_non_standard(const Motcle&, Entree&) override;
  void completer() override;
  void discretiser_vitesse() override;
  void discretiser_grad_p() override;
  void mettre_a_jour(double temps) override;
  int impr(Sortie& os) const override
  {
    return Equation_base::impr(os); //idem
  }
  bool initTimeStep(double dt) override;
  void abortTimeStep() override;
 
  void dimensionner_matrice_sans_mem(Matrice_Morse& matrice) override;
 
  /*
    interface {dimensionner,assembler}_blocs
    specifics: evanescence is taken into account (last)
  */
  int has_interface_blocs() const override;
  void dimensionner_blocs(matrices_t matrices, const tabs_t& semi_impl = {}) const override;
  const Champ_Don_base& diffusivite_pour_transport() const override;
  const Champ_base& diffusivite_pour_pas_de_temps() const override;
  const Champ_base& vitesse_pour_transport() const override;
  void assembler_blocs_avec_inertie(matrices_t matrices, DoubleTab& secmem, const tabs_t& semi_impl = {}) override;
  void creer_champ(const Motcle& motlu) override;
  void get_noms_champs_postraitables(Noms& nom,Option opt=NONE) const override;
 
  double alpha_res() const ;
 
protected:
  Entree& lire_cond_init(Entree&) override; // to read the pressure
  int preparer_calcul() override; // calls Equation_base method
 
  std::vector<OWN_PTR(Champ_Inc_base)> vit_phases_; // velocity fields for each phase
  Motcles noms_vit_phases_; // their names
 
  std::vector<OWN_PTR(Champ_Fonc_base)> grad_vit_phases_; // velocity gradients for each phase
  Motcles noms_grad_vit_phases_; // their names
 
  Operateur_Evanescence evanescence_;
};
 
#endif /* QDM_Multiphase_included */