Novel meshless method for solving the potential problems with arbitrary domain

JOURNAL OF COMPUTATIONAL PHYSICS

卷:209

Article

Young, DL ; Chen, KH ; Lee, CW

关键词: non-singular;    meshless method;    conventional MFS;    singular fundamental solution;    double layer potential;    desingularization technique;    singularity;    hypersingularity;    kernel function;    mixed-type BC;    circulants;   

DOI  :  10.1016/j.jcp.2005.03.007

来源: Elsevier

【 摘 要 】

in this article, a non-singular and boundary-type meshless method in two dimensions is developed to solve the potential problems. The solution is represented by a distribution of the kernel functions of double layer potentials. By using the desingularization technique to regularize the singularity and hypersingularity of the kernel functions, the source points can be located on the real boundary and therefore the diagonal terms of influence matrices are determined. The main difficulty of the coincidence of the source and collocation points then disappears. By employing the two-point function, the off-diagonal coefficients of influence matrices are easily obtained. The numerical evidences of the proposed meshless method demonstrate the accuracy of the solutions after comparing with the results of exact solution, conventional MFS and BEM for the Dirichlet, Neumann and mix-type boundary conditions (BCs) of interior and exterior problems with simple and complicated boundaries. Good agreements with exact solutions are observed. (c) 2005 Elsevier Inc. All rights reserved.

【 授权许可】

Free