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A posteriori error estimation and adaptivity in hp virtual elements

Journal Article · · Numerische Mathematik
 [1];  [2];  [3]
  1. Univ. degli Studi di Milano-Bicocca, Milan (Italy)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Vienna, Vienna (Austria)

An explicit and computable error estimator for the hp version of the virtual element method (VEM), together with lower and upper bounds with respect to the exact energy error, is presented. Such error estimator is employed to provide, following the approach of Melenk and Wohlmuth (Adv Comput Math 15(1–4):311–331, 2001), hp adaptive mesh refinements for very general polygonal meshes. In addition, a novel VEM hp Clément quasi-interpolant, instrumental for the a posteriori error analysis, is introduced. The performances of the adaptive method are validated by a number of numerical experiments.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
LDRD; USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1542818
Report Number(s):
LA-UR--18-23445
Journal Information:
Numerische Mathematik, Journal Name: Numerische Mathematik Journal Issue: 1 Vol. 143; ISSN 0029-599X
Publisher:
Springer Berlin HeidelbergCopyright Statement
Country of Publication:
United States
Language:
English

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