Computable error bounds for nonconfirming Fortin-Soulie finite element approximation of the Stokes problem

Research output: Research - peer-reviewArticle

We propose computable a posteriori error estimates for a second order nonconforming finite element approximation of the Stokes problem. The estimator is completely free of unknown constants and gives a guaranteed numerical upper bound on the error, in terms of a lower bound for the inf-sup constant of the underlying continuous problem. The estimator is also shown to provide a lower bound on the error up to a constant and higher order data oscillation terms. Numerical results are presented illustrating the theory and the performance of the
Original languageEnglish
Pages (from-to)414-447
Number of pages34
JournalIMA Journal of Numerical Analysis
Issue number2
StatePublished - 2012

    Research areas

  • a posteriori error estimation, Fortin-Soulie element , nonconforming finite element

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