Frottement_interfacial_Ishii_Zuber_Deformable.h

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#ifndef Frottement_interfacial_Ishii_Zuber_Deformable_included
#define Frottement_interfacial_Ishii_Zuber_Deformable_included
 
#include <Frottement_interfacial_base.h>
 
/*! @brief Ishii-Zuber interfacial drag for deformable (cap/slug) bubbles.
 *
 *         Cd = 2/3 * sqrt(Eo), with Ishii-Zuber void correction.
 *
 *         Reference: M. Ishii, N. Zuber, "Drag coefficient and relative
 *         velocity in bubbly, droplet or particulate flows", AIChE J, 1979.
 */
class Frottement_interfacial_Ishii_Zuber_Deformable : public Frottement_interfacial_base
{
  Declare_instanciable(Frottement_interfacial_Ishii_Zuber_Deformable);
 
public:
  void coefficient(const DoubleTab& alpha, const DoubleTab& p, const DoubleTab& T,
                   const DoubleTab& rho, const DoubleTab& mu, const DoubleTab& sigma, double Dh,
                   const DoubleTab& ndv, const DoubleTab& d_bulles, DoubleTab& coeff) const override;
  void coefficient_CD(const DoubleTab& alpha, const DoubleTab& p, const DoubleTab& T,
                      const DoubleTab& rho, const DoubleTab& mu, const DoubleTab& sigma, double Dh,
                      const DoubleTab& ndv, const DoubleTab& d_bulles, DoubleTab& coeff) const  override;
 
protected:
  double g_ = 9.81;
  double beta_ = 1.;
  int n_l = -1; //liquid phase
};
 
#endif