A posteriori error estimates for the virtual element method

Andrea Cangiani, Emmanuil H. Georgoulis, Tristan Pryer, Oliver J. Sutton

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

An posteriori error analysis for the virtual element method (VEM) applied to general elliptic problems is presented. The resulting error estimator is of residual-type and applies on very general polygonal/polyhedral meshes. The estimator is fully computable as it relies only on quantities available from the VEM solution, namely its degrees of freedom and element-wise polynomial projection. Upper and lower bounds of the error estimator with respect to the VEM approximation error are proven. The error estimator is used to drive adaptive mesh refinement in a number of test problems. Mesh adaptation is particularly simple to implement since elements with consecutive co-planar edges/faces are allowed and, therefore, locally adapted meshes do not require any local mesh post-processing.
Original languageEnglish
Pages (from-to)857-893
Number of pages37
JournalNumerische Mathematik
Volume137
Issue number4
Early online date18 May 2017
DOIs
Publication statusPublished - 31 Dec 2017

Keywords

  • math.NA

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