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Optimal multilevel preconditioners for isogeometric collocation methods

Authors
Cho, Durkbin
Issue Date
Feb-2020
Publisher
ELSEVIER
Keywords
Isogeometric analysis; Collocation methods; Multigrid; Preconditioners; GMRES; Multilevel methods
Citation
MATHEMATICS AND COMPUTERS IN SIMULATION, v.168, pp 76 - 89
Pages
14
Indexed
SCIE
SCOPUS
Journal Title
MATHEMATICS AND COMPUTERS IN SIMULATION
Volume
168
Start Page
76
End Page
89
URI
https://scholarworks.dongguk.edu/handle/sw.dongguk/6976
DOI
10.1016/j.matcom.2019.08.003
ISSN
0378-4754
1872-7166
Abstract
We present optimal additive and multiplicative multilevel methods, such as BPX preconditioner and multigrid V-cycle, for the solution of linear systems arising from isogeometric collocation discretizations of second order elliptic problems. These resulting preconditioners, accelerated by GMRES, lead to optimal complexity for the number of levels, and illustrate their good performance with respect to the isogeometric discretization parameters such as the spline polynomial degree and regularity of the isogeometric basis functions, as well as with respect to domain deformations. (C) 2019 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.
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