RK3_FT.h

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#ifndef RK3_FT_included
#define RK3_FT_included
 
#include <Schema_RK_Williamson.h>
#include <Probleme_Couple.h>
#include <TRUST_Vector.h>
#include <TRUST_Deriv.h>
#include <TRUST_Ref.h>
 
class Probleme_base;
 
 
/*! @brief classe RK3 Cette classe represente un schema en temps de Runge Kutta d'ordre 3
 *
 *      (cas 7 de Williamson) s'ecrit :
 *      q1=h f(x0)
 *      x1=x0+b1 q1
 *      q2=h f(x1) +a2 q1
 *      x2=x1+b2 q2
 *      q3=h f(x2)+a3 q2
 *      x3=x2+b3 q3
 *       avec a1=0, a2=-5/9, a3=-153/128
 *                               b1=1/3, b2=15/16, b3=8/15
 *
 * @sa Schema_Temps_base
 */
class RK3_FT: public RK3
{
  Declare_instanciable(RK3_FT);
public :
  int faire_un_pas_de_temps_eqn_base(Equation_base&) override;
  bool iterateTimeStep(bool& converged) override;
  int faire_un_pas_de_temps_pb_couple(Probleme_Couple&);
};
 
#endif