Vitesse_derive_Forces.h

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#ifndef Vitesse_derive_Forces_included
#define Vitesse_derive_Forces_included
 
#include <Vitesse_derive_base.h>
 
/*! @brief Force-based drift velocity between a gas phase and a liquid phase.
 *
 *  Drift velocity between a gas phase and a liquid phase.
 *      -> Ishii-type correlation of the form: v_g = C0 * (alpha_g * v_g + alpha_l * v_l) + v_g0
 *
 */
 
class Vitesse_derive_Forces : public Vitesse_derive_base
{
  Declare_instanciable(Vitesse_derive_Forces);
 
public:
  bool needs_grad_alpha() const override {return needs_grad_alpha_;};
  bool needs_vort() const override {return needs_vort_;};
  void completer() override;
  void set_param(Param& param) const override;
 
protected:
  void evaluate_C0_vg0(const input_t& input) const override;
 
  // correlation parameters (circular channel)
  bool needs_grad_alpha_ = 0;
  bool needs_vort_ = 0;
  double alpha_lim_=1.e-5;
};
 
#endif /* Vitesse_derive_Forces_included */