Neumann_val_ext.h

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#ifndef Neumann_val_ext_included
#define Neumann_val_ext_included
 
#include <Neumann.h>
 
/*! @brief Classe Neumann_val_ext This class is the base class of the hierarchy of
 *
 *     Neumann_val_ext-type boundary conditions.
 *     A Neumann_val_ext boundary condition imposes the value of the derivative
 *     of an unknown field at a boundary, which corresponds to:
 *       - imposed flux for the scalar transport equation
 *       - imposed stress for the momentum equation
 *
 * @sa Cond_lim_base Neumann_val_ext_homogene
 */
class Neumann_val_ext: public Neumann
{
  Declare_base(Neumann_val_ext);
public:
  virtual const DoubleTab& tab_ext() const = 0;
  virtual DoubleTab& tab_ext() = 0;
 
  virtual double val_ext(int i) const = 0;
  virtual double val_ext(int i, int j) const = 0;
};
 
#endif