Runge-Kutta Methods: Local error control does not imply global error control

Details Runge-Kutta Methods: Local error control does not imply global error control Runge-Kutta Methods: Local error control does not imply global error control

2011-10-26

arxiv.org/abs/1110.5728v2

Journal of Pure and Applied Mathematics: Advances and Applications, 6, 1 (2011) 71-84

Mathematics

Numerical Analysis

Updates to references [3] and [4], relative to the original paper

Scientific paper

We study the relationship between local and global error in Runge-Kutta methods for initial-value problems in ordinary differential equations. We show that local error control by means of local extrapolation does not equate to global error control. Our analysis shows that the global error of the higher-order solution is propagated under iteration, and this can cause an uncontrolled increase in the global error of the lower-order solution. We find conditions under which global error control occurs during the initial stages of the RK integration, but even in such a case the global error is likely to eventually exceed the user-defined tolerance.

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