Finite element error estimates on geometrically perturbed domains

• Verfasst von: Minakowski, Piotr [VerfasserIn]
• Verfasst von: Richter, Thomas [VerfasserIn]
• Titel: Finite element error estimates on geometrically perturbed domains
• Verf.angabe: Piotr Minakowski, Thomas Richter
• E-Jahr: 2020
• Jahr: 24 July 2020
• Umfang: 19 S.
• Fussnoten: Gesehen am 05.10.2020
• Titel Quelle: Enthalten in: Journal of scientific computing
• Ort Quelle: New York, NY [u.a.] : Springer Science + Business Media B.V., 1986
• Jahr Quelle: 2020
• Band/Heft Quelle: 84(2020), 2, Artikel-ID 30
• ISSN Quelle: 1573-7691
• DOI: doi:10.25673/71430
• URN: urn:nbn:de:gbv:ma9:1-1981185920-733822
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1734676493

Abstract

We develop error estimates for the finite element approximation of elliptic partial differential equations on perturbed domains, i.e. when the computational domain does not match the real geometry. The result shows that the error related to the domain can be a dominating factor in the finite element discretization error. The main result consists of $$H^1$$H1- and $$L^2$$L2-error estimates for the Laplace problem. Theoretical considerations are validated by a computational example.