A simple yet effective a posteriori estimator for classical mixed approximation of Stokes equations

Liao, Qifeng and Silvester, David (2010) A simple yet effective a posteriori estimator for classical mixed approximation of Stokes equations. Applied Numerical Mathematics. ISSN 0168-9274 (In Press)

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Official URL: http://dx.doi.org/10.1016/j.apnum.2010.05.003

Abstract

The implementation of quadratic velocity, linear pressure finite element approximation methods for the steady-state incompressible (Navier-) Stokes equations is addressed in this work. Three types of a posteriori error indicator are introduced and are shown to give global error estimates that are equivalent to the true discretisation error. Computational results suggest that the solution of local Poisson problems provides a cost-effective error estimation strategy, both from the perspective of accurate estimation of the global error and for the purpose of selecting elements for refinement within a contemporary self-adaptive refinement algorithm.

Item Type: Article
Additional Information: This is the accepted version of this manuscript.
Uncontrolled Keywords: Finite elements, Mixed approximation, Error estimation
Subjects: MSC 2010, the AMS's Mathematics Subject Classification > 65 Numerical analysis
MSC 2010, the AMS's Mathematics Subject Classification > 76 Fluid mechanics
Depositing User: professor david silvester
Date Deposited: 22 Jun 2010
Last Modified: 20 Oct 2017 14:12
URI: http://eprints.maths.manchester.ac.uk/id/eprint/1488

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