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A posteriori estimates for the Cahn–Hilliard equationwith obstacle free energy

Published online by Cambridge University Press:  12 June 2009

Ľubomír Baňas
Affiliation:
Department of Mathematics and the Maxwell Institute for Mathematical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK. [email protected]
Robert Nürnberg
Affiliation:
Department of Mathematics, Imperial College London, London, SW7 2AZ, UK.
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Abstract

We derive a posteriori estimates for a discretization in space of the standardCahn–Hilliard equation with a double obstacle free energy.The derived estimates are robust and efficient, and in practice are combinedwith a heuristic time step adaptation. We present numerical experiments in two and three space dimensions and compareour method with an existing heuristic spatial mesh adaptation algorithm.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2009

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