An integrated-RBF technique based on Galerkin formulation for elliptic differential equations
Article
Article Title | An integrated-RBF technique based on Galerkin formulation for elliptic differential equations |
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ERA Journal ID | 3475 |
Article Category | Article |
Authors | Mai-Duy, Nam (Author) and Tran-Cong, Thanh (Author) |
Journal Title | Engineering Analysis with Boundary Elements |
Journal Citation | 33 (2), pp. 191-199 |
Number of Pages | 9 |
Year | 2009 |
Publisher | Elsevier |
Place of Publication | Oxford, United Kingdom |
ISSN | 0955-7997 |
1873-197X | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.enganabound.2008.05.001 |
Abstract | This paper presents a new radial-basis-function (RBF) technique for solving elliptic differential equations (DEs). The RBF solutions are sought to satisfy (a) the boundary conditions in a local sense using the point-collocation formulation, (b) the governing equation in a global sense using the Galerkin formulation. In contrast to Galerkin finite-element techniques, the present Neumann boundary conditions are imposed in an exact manner. Unlike conventional RBF techniques, the present RBF approximations are constructed 'locally' on grid lines through integration and they are expressed in terms of nodal variable values. The proposed technique can provide an approximate solution that is a Cp function across the subdomain interfaces (p—the order of the DE). Several numerical examples are presented to demonstrate the attractiveness of the present implementation. |
Keywords | integrated RBFNs; Galerkin formulation; Neumann boundary conditions; multiple boundary conditions; domain decomposition |
ANZSRC Field of Research 2020 | 490303. Numerical solution of differential and integral equations |
490409. Ordinary differential equations, difference equations and dynamical systems | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Computational Engineering and Science Research Centre |
https://research.usq.edu.au/item/9z67v/an-integrated-rbf-technique-based-on-galerkin-formulation-for-elliptic-differential-equations
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