Elsevier

Applied Mathematics Letters

Volume 30, April 2014, Pages 56-60
Applied Mathematics Letters

Revised exponentially fitted Runge–Kutta–Nyström methods

https://doi.org/10.1016/j.aml.2013.10.013Get rights and content
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Abstract

It is the purpose of this paper to revise the exponential fitting technique for the numerical solution of special second order ordinary differential equations (ODEs) y=f(x,y), with oscillatory or periodic solutions, by Runge–Kutta–Nyström methods. Due to the multistage nature of these methods, the proposed technique takes into account the contribution to the error arising from the computation of the internal stages. The benefit on the accuracy of the overall numerical scheme is visible in the presented numerical evidence.

Keywords

Second order ordinary differential equations
Runge–Kutta–Nyström methods
Exponential fitting

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