ODEIntegrators Namespace Reference

Classes
class	AbstractODEIntegrator
	The abstract class defining the interface for the integrator routines. More...

Functions
bool	AdaptiveRK54 (AbstractODEIntegrator &ode, double tmin, double tmax, double hmin, double hmax, double eps_allowed, double step_relax)
	Use the adaptive Runge-Kutta integrator to integrate a system of differential equations. More...

Function Documentation

AdaptiveRK54()

bool ODEIntegrators::AdaptiveRK54	(	AbstractODEIntegrator &	ode,
		double	tmin,
		double	tmax,
		double	hmin,
		double	hmax,
		double	eps_allowed,
		double	step_relax
	)

Use the adaptive Runge-Kutta integrator to integrate a system of differential equations.

Parameters

tmin	Starting value of the independent variable. t is in the closed range [tmin, tmax]
tmax	Ending value for the independent variable. t is in the closed range [tmin, tmax]
hmin	Minimum step size, something like 1e-5 usually is good. Don't make this too big or you may not be able to get a stable solution
hmax	Maximum step size
eps_allowed	Maximum absolute error of any CV per step allowed. Don't make this parameter too big or you may not be able to get a stable solution. Also don't make it too small because then you are going to run into truncation error.
step_relax	The relaxation factor that is used in the step resizing algorithm. Should be less than 1.0; you can play with this parameter to improve the adaptive resizing, but should not be necessary.

Definition at line 8 of file ODEIntegrators.cpp.