Coalescence_bulles_2groupes_Smith.h

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#ifndef Coalescence_bulles_2groupes_Smith_included
#define Coalescence_bulles_2groupes_Smith_included
 
#include <TRUSTTabs_forward.h>
#include <Coalescence_bulles_2groupes_base.h>
#include <TRUSTTab.h>
 
/*! @brief Two-group bubble coalescence source terms using the Smith model.
 *
 *         Computes random coalescence (RC) and wake entrainment (WE) source
 *         terms for the two-group interfacial area transport equation.
 *
 *         Reference: T.R. Smith et al., "Mechanistic modeling of interfacial
 *         area transport in large diameter pipes", IJMF, 2012.
 */
class Coalescence_bulles_2groupes_Smith : public Coalescence_bulles_2groupes_base
{
  Declare_instanciable(Coalescence_bulles_2groupes_Smith);
public:
  void coefficient_RC(const DoubleTab& alpha, const DoubleTab& alpha_p, const DoubleTab& p, const DoubleTab& T,
                      const DoubleTab& rho, const DoubleTab& nu, const DoubleTab& sigma, const double Dh,
                      const DoubleTab& ndv, const DoubleTab& d_bulles,
                      const DoubleTab& eps, const DoubleTab& k_turb, const int n_l, const int n_g1, const int n_g2 ,
                      DoubleTab& coeff) const  override ;
  void coefficient_WE(const DoubleTab& alpha, const DoubleTab& p, const DoubleTab& T,
                      const DoubleTab& rho, const DoubleTab& nu, const DoubleTab& sigma, double Dh,
                      const DoubleTab& ndv, const DoubleTab& d_bulles,
                      const DoubleTab& eps, const DoubleTab& k_turb, const int n_l, const int n_g1, const int n_g2,
                      DoubleTab& coeff) const  override ;
 
private:
  static constexpr double fac_sec_ = 1.e4;          //!< Numerical security factor
  static constexpr double alpha_coal_max_ = 0.509;   //!< Maximum void fraction for coalescence
 
  const double C_RC1 = 0.005;
  const double C_RC0 = 3.0;
  const double C_RC2 = 0.005;
  const double C_RC122 = 0.005;
  const double alpha_max = 0.62;
  const double C_WE1 = 0.002;
  const double C_WE2 = 0.002;
  const double C_WE112 = 0.002;
  const double g = 9.81;
};
 
#endif