Title
RBF-DQ algorithms for elliptic problems in axisymmetric domains
Abstract
A radialbasis function (RBF)-differentialquadrature (DQ) method is applied for the numerical solution of elliptic boundary value problems (BVPs) in three-dimensional axisymmetric domains. By appropriately selecting the collocation points, for any choice of RBF, the proposed discretization leads to linear systems in which the coefficient matrices possess block circulant structures. Matrix decomposition algorithms (MDAs) and fast Fourier transforms (FFTs) are employed for the efficient solution of these systems. Three types of BVPs are considered, namely ones governed by the Poisson equation, the inhomogeneous biharmonic equation, and the inhomogeneous Cauchy-Navier equations of elasticity. The high accuracy of the proposed technique as well as its ability to solve large-scale problems is demonstrated on several numerical examples.
Year
DOI
Venue
2022
10.1007/s11075-021-01105-w
NUMERICAL ALGORITHMS
Keywords
DocType
Volume
Differential quadrature, Radial basis functions, Poisson equation, Biharmonic equation, Cauchy-Navier equations of elasticity
Journal
89
Issue
ISSN
Citations 
1
1017-1398
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
C. S. Chen100.34
Malgorzata A. Jankowska200.34
Andreas Karageorghis300.34