Original title: The effect of irregular interfaces on the BDDC method for the Navier-Stokes equations
Authors: Hanek, M. ; Šístek, Jakub ; Burda, P.
Document type: Papers
Conference/Event: 23rd International Conference on Domain Decomposition Methods (DD23), Jeju Island (KR), 20150706
Year: 2017
Language: eng
Abstract: We investigate the effect of interface irregularity on the convergence of the BDDC method for Navier-Stokes equations. A benchmark problem of a sequence of contracting channels is proposed to evaluate the robustness of the iterative solver with respect to element aspect ratios at the interface. Partitioners based on graph of the mesh and the geometry of the domain are compared. It is shown, that the convergence is significantly improved by avoiding irregular interfaces for the benchmark problem as well as for an industrial problem of oil flow in hydrostatic bearing.
Keywords: domain decomposition methods; hydrostatic bearings; Navier Stokes equations
Project no.: GA14-02067S (CEP)
Funding provider: GA ČR
Host item entry: Domain Decomposition Methods in Science and Engineering XXIII, ISBN 978-3-319-52388-0, ISSN 1439-7358
Note: Související webová stránka: http://link.springer.com/chapter/10.1007%2F978-3-319-52389-7_16

Institution: Institute of Mathematics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0270960

Permalink: http://www.nusl.cz/ntk/nusl-373359


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Research > Institutes ASCR > Institute of Mathematics
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