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P-adaptive Hermite methods for initial value problems

Published online by Cambridge University Press:  11 January 2012

Ronald Chen
Affiliation:
Department of Mathematics and Statistics, The University of New Mexico, MSC03 2150, Albuquerque, 87131-0001 NM, USA. [email protected]
Thomas Hagstrom
Affiliation:
Department of Mathematics, Southern Methodist University, PO Box 750156, Dallas, 75275-0156 TX, USA; [email protected]
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Abstract

We study order-adaptive implementations of Hermite methods for hyperbolic and singularly perturbed parabolic initial value problems. Exploiting the facts that Hermite methods allow the degree of the local polynomial representation to vary arbitrarily from cell to cell and that, for hyperbolic problems, each cell can be evolved independently over a time-step determined only by the cell size, a relatively straightforward method is proposed. Its utility is demonstrated on a number of model problems posed in 1+1 and 2+1 dimensions.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2012

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