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Computational Methods in Applied Mathematics

Editor-in-Chief: Carstensen, Carsten

Managing Editor: Matus, Piotr

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Volume 14, Issue 1


Computational Survey on A Posteriori Error Estimators for the Crouzeix–Raviart Nonconforming Finite Element Method for the Stokes Problem

Carsten Carstensen
  • Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany; and Department of Computational Science and Engineering, Yonsei University, 120-749 Seoul, Korea
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/ Christian Merdon
Published Online: 2013-09-05 | DOI: https://doi.org/10.1515/cmam-2013-0021


This survey compares different strategies for guaranteed error control for the lowest-order nonconforming Crouzeix–Raviart finite element method for the Stokes equations. The upper error bound involves the minimal distance of the computed piecewise gradient DNCuCR to the gradients of Sobolev functions with exact boundary conditions. Several improved suggestions for the cheap computation of such test functions compete in five benchmark examples. This paper provides numerical evidence that guaranteed error control of the nonconforming FEM is indeed possible for the Stokes equations with overall efficiency indices between 1 to 4 in the asymptotic range.

Keywords: Nonconforming Finite Element Method; Crouzeix–Raviart Finite Element Method; Adaptive Finite Element Method; A Posteriori Error Estimation

MSC: 65N30; 65N15

About the article

Published Online: 2013-09-05

Published in Print: 2014-01-01

Citation Information: Computational Methods in Applied Mathematics, Volume 14, Issue 1, Pages 35–54, ISSN (Online) 1609-9389, ISSN (Print) 1609-4840, DOI: https://doi.org/10.1515/cmam-2013-0021.

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