A numerical scheme based on local integrated RBFNs and Cartesian grids for solving second-order elliptic problems in two dimensions
Edited book (chapter)
Chapter Title | A numerical scheme based on local integrated RBFNs and Cartesian grids for solving second-order elliptic problems in two dimensions |
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Book Chapter Category | Edited book (chapter) |
ERA Publisher ID | 3418 |
Book Title | Recent studies in meshless and other novel computational methods |
Authors | Mai-Duy, N. (Author) and Tran-Cong, T. (Author) |
Editors | Sarler, Bozidar and Atluri, Satya N. |
Page Range | 17-33 |
Chapter Number | 2 |
Number of Pages | 17 |
Year | 2010 |
Publisher | Tech Science Press |
Place of Publication | Duluth, GA. United States |
ISBN | 9780982420546 |
Web Address (URL) | http://www.techscience.com/books/mlpg2009.html |
Abstract | This paper reports a new Cartesian-grid computational technique, based on local integrated radial-basis-function networks (IRBFNs), for the solution of second-order elliptic differential problems defined on two-dimensional regular and irregular domains. At each grid point, only neighbouring nodes are activated to construct the IRBFN approximations. Local IRBFNs are introduced into two different schemes for discretisation of partial differential equations, namely point collocation and control-volume (CV)/subregion-collocation. Numerical experiments indicate that the latter outperforms the former regarding accuracy. Moreover, the proposed local IRBFN CV method shows a similar level of the matrix condition number and a significant improvement in accuracy over a linear CV method. |
Keywords | local approximations; integrated RBFNs; point collocation; subregion collocation; second-order differential problems |
ANZSRC Field of Research 2020 | 490410. Partial differential equations |
490101. Approximation theory and asymptotic methods | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | © Tech Science Press 2010. No part of this publication may be reproduced or distributed in any form or by any means without written permission of the publisher. |
Byline Affiliations | Computational Engineering and Science Research Centre |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0777/a-numerical-scheme-based-on-local-integrated-rbfns-and-cartesian-grids-for-solving-second-order-elliptic-problems-in-two-dimensions
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