Open Access
ARTICLE
A Novel Technique for Estimating the Numerical Error in Solving the Helmholtz Equation
Kue-Hong Chen1, *, Cheng-Tsung Chen2, 3
1 Department of Civil Engineering, National Ilan University, Ilan, 26047, Taiwan.
2 Department of Civil Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
3 Center for Innovative Research on Aging Society, National Chung Cheng University, Chia-yi, 621301, Taiwan.
* Corresponding Author: Kue-Hong Chen. Email: .
Computers, Materials & Continua 2020, 64(1), 145-160. https://doi.org/10.32604/cmc.2020.08864
Received 19 October 2019; Accepted 14 January 2020; Issue published 20 May 2020
Abstract
In this study, we applied a defined auxiliary problem in a novel error
estimation technique to estimate the numerical error in the method of fundamental
solutions (MFS) for solving the Helmholtz equation. The defined auxiliary problem is
substituted for the real problem, and its analytical solution is generated using the
complementary solution set of the governing equation. By solving the auxiliary problem
and comparing the solution with the quasianalytical solution, an error curve of the MFS
versus the source location parameters can be obtained. Thus, the optimal location
parameter can be identified. The convergent numerical solution can be obtained and
applied to the case of an unavailable analytical solution condition in the real problem.
Consequently, we developed a systematic error estimation scheme to identify an optimal
parameter. Through numerical experiments, the optimal location parameter of the source
points and the optimal number of source points in the MFS were studied and obtained
using the error estimation technique.
Keywords
Cite This Article
K. Chen and C. Chen, "A novel technique for estimating the numerical error in solving the helmholtz equation,"
Computers, Materials & Continua, vol. 64, no.1, pp. 145–160, 2020.