public interface OrdinaryDifferentialEquation
This interface should be implemented by all real first order
differential equation problems before they can be handled by the
ODEState, double) method.
A first order differential equations problem, as seen by an
integrator is the time derivative
dY/dt of a state
Y, both being one dimensional arrays. From the
integrator point of view, this derivative depends only on the
t and on the state vector
For real problems, the derivative depends also on parameters that do not belong to the state vector (dynamical model constants for example). These constants are completely outside of the scope of this interface, the classes that implement it are allowed to handle them as they want.
|Modifier and Type||Method and Description|
Get the current time derivative of the state vector.
Get the dimension of the problem.
Initialize equations at the start of an ODE integration.
default void init(double t0, double y0, double finalTime)
This method is called once at the start of the integration. It may be used by the equations to initialize some internal data if needed.
The default implementation does nothing.
t0- value of the independent time variable at integration start
y0- array containing the value of the state vector at integration start
finalTime- target time for the integration
double computeDerivatives(double t, double y)
t- current value of the independent time variable
y- array containing the current value of the state vector
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