Navier_Stokes_phase_field.h

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#ifndef Navier_Stokes_phase_field_included
#define Navier_Stokes_phase_field_included
 
#include <Source_Con_Phase_field.h>
#include <Navier_Stokes_std.h>
#include <Constituant.h>
#include <TRUST_Ref.h>
#include <time.h>
 
 
/*! @brief classe Navier_Stokes_phase_field Cette classe porte les termes de l'equation de la dynamique
 *
 *     pour un fluide sans modelisation de la turbulence.
 *     On suppose l'hypothese de fluide incompressible: div U = 0
 *     On peut 1) soit utiliser un modele a rho variable
 *             2) soit utiliser l'hypothese de Boussinesq
 *     Dans ce cas, on considere la masse volumique constante (egale a rho_0) sauf dans le
 *     terme des forces de gravite.
 *     Sous ces hypotheses, on utilise la forme suivante des equations de
 *     Navier_Stokes:
 *        DU/dt = div(terme visqueux) - gradP/rho_0 + Bt(T-T0)g + autres sources/rho_0
 *        div U = 0
 *     avec DU/dt : derivee particulaire de la vitesse
 *          rho_0 : masse volumique de reference
 *          T0    : temperature de reference
 *          Bt    : coefficient de dilatabilite du fluide
 *          g     : vecteur gravite
 *     Rq : l'implementation de la classe permet bien sur de negliger
 *          certains termes de l'equation (le terme visqueux, le terme
 *          convectif, tel ou tel terme source).
 *     L'inconnue est le champ de vitesse.
 *
 *     Pour le traitement des cas un peu particulier : ajout de Traitement_particulier
 *     exemple : THI, canal (CA)
 *
 * @sa Equation_base Pb_Hydraulique Pb_Thermohydraulique, Post-traitement du potentiel chimique generalise
 */
class Navier_Stokes_phase_field: public Navier_Stokes_std
{
  Declare_instanciable(Navier_Stokes_phase_field);
public:
  void discretiser() override;
  int preparer_calcul() override;
  virtual void rho_aux_faces(const DoubleTab&, Champ_Don_base&);
 
  DoubleTab& derivee_en_temps_inco(DoubleTab&) override;
  void mettre_a_jour(double) override;
  const Champ_Don_base& diffusivite_pour_transport() const override;
 
  double calculer_pas_de_temps() const override;
 
  inline int& getset_terme_source() { return terme_source_; }
  inline int& getset_compressible() { return compressible_; }
 
protected:
  int terme_source_ = -123, compressible_ = -123;
};
 
// Methode de calcul de la valeur sur un champ aux elements d'un champ uniforme ou non a plusieurs composantes
inline double& valeur(DoubleTab& valeurs, const int elem, const int dim)
{
  return valeurs(elem, dim);
}
 
#endif /* Navier_Stokes_phase_field_included */