RBF-based meshless boundary knot method and boundary particle method

Details RBF-based meshless boundary knot method and boundary particle method RBF-based meshless boundary knot method and boundary particle method

2002-07-10

arxiv.org/abs/cs/0207041v1

Computer Science

Computational Engineering, Finance, and Science

Scientific paper

This paper is concerned with the two new boundary-type radial basis function collocation schemes, boundary knot method (BKM) and boundary particle method (BPM). The BKM is developed based on the dual reciprocity theorem, while the BPM employs the multiple reciprocity technique. Unlike the method of fundamental solution, the wto methods use the nonsingular general solutions instead of singular fundamental solution to circumvent the controversial artificial boundary outside physical domain. Compared with the boundary element method, both the BKM and BPM are meshfree, superconvergent, meshfree, integration free, symmetric, and mathematically simple collocation techniques for general PDEs. In particular, the BPM does not require any inner nodes for inhomogeneous problems. In this study, the accuracy and efficiency of the two methods are numerically demonstrated to some 2D, 3D Helmholtz and convection-diffusion problems under complicated geometries.

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