Multi-level hp-adaptivity and explicit error estimation

Titel in Übersetzung: Multi-level hp-adaptivity and explicit error estimation

D D’Angella, N Zander, S Kollmannsberger, F Frischmann, E Rank, Andreas Schröder, A Reali

Publikation: Beitrag in FachzeitschriftArtikel

Abstract

Recently, a multi-level hp-version of the finite element method (FEM) was proposed to ease the difficulties of treating hanging nodes, while providing full hp-approximation capabilities. In the original paper, the refinement procedure made use of a-priori knowledge of the solution. However, adaptive procedures can produce discretizations which are more effective than an intuitive choice of element sizes h and polynomial degree distributions p. This is particularly prominent when a-priori knowledge of the solution is only vague or unavailable. The present contribution demonstrates that multi-level hp-adaptive schemes can be efficiently driven by an explicit a-posteriori error estimator. To this end, we adopt the classical residual-based error estimator. The main insight here is that its extension to multi-level hp-FEM is possible by considering the refined-most overlay elements as integration domains. We demonstrate on several two- and three-dimensional examples that exponential convergence rates can be obtained. © 2016, The Author(s).
OriginalspracheEnglisch
Aufsatznummer33
FachzeitschriftAdvanced Modeling and Simulation in Engineering Sciences
Jahrgang3
Ausgabenummer1
DOIs
PublikationsstatusVeröffentlicht - 2016

Systematik der Wissenschaftszweige 2012

  • 101 Mathematik

Schlagwörter

  • Explicit error estimation
  • High-order FEM
  • hp-Adaptivity

Zitieren

D’Angella, D., Zander, N., Kollmannsberger, S., Frischmann, F., Rank, E., Schröder, A., & Reali, A. (2016). Multi-level hp-adaptivity and explicit error estimation. Advanced Modeling and Simulation in Engineering Sciences, 3(1), [33]. https://doi.org/10.1186/s40323-016-0085-5