A fast direct boundary element method for 3D acoustic problems based on hierarchical matrices

Li, Ruoyan1,2; Liu, Yijun1; Ye, Wenjing2

2023-02-01

10.1016/j.enganabound.2022.11.035

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS   影响因子和分区

0955-7997

1873-197X

The boundary element method (BEM) for acoustic problems is a numerical method based on solving the discretized boundary integral equation (BIE) corresponding to the Helmholtz equation. A fast direct BEM for 3D acoustic problems is proposed in this paper, which is more suitable for broadband acoustic simulation of complex structures, such as in the design and analysis of acoustic metamaterials. The main idea of the fast direct solver is based on the hierarchical off-diagonal low-rank (HODLR) matrix, randomized interpolative decomposition and fast matrix inversion formula. Several numerical examples in solving both interior and exterior acoustic problems are presented in this paper, including radiation and scattering problems with distributed and complex structures. The numerical results show that the same level of accuracy and higher computational efficiency can be achieved by using this fast direct BEM compared with the conventional direct BEM.The second and third authors (Liu and Ye) would like to dedicate this paper to Professor Subrata Mukherjee who had enormous influences on their academic lives and research work on the BEM.

Boundary element method Fast direct solver Hierarchical matrices 3-D acoustic wave problems

SCI ; EI

英语

第一 ; 通讯

[11972179]

Engineering ; Mathematics

Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications

WOS:000903455800002

ELSEVIER SCI LTD

20230213362141

Acoustic fields ; Boundary integral equations ; Computational efficiency ; Matrix algebra ; Numerical methods ; Sailing vessels

Small Marine Craft:674.1 ; Acoustics, Noise. Sound:751 ; Algebra:921.1 ; Calculus:921.2 ; Numerical Methods:921.6

ENGINEERING

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen, Peoples R China
2.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Hong Kong, Peoples R China

Li, Ruoyan,Liu, Yijun,Ye, Wenjing. A fast direct boundary element method for 3D acoustic problems based on hierarchical matrices[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2023,147:171-180.

Li, Ruoyan,Liu, Yijun,&Ye, Wenjing.(2023).A fast direct boundary element method for 3D acoustic problems based on hierarchical matrices.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,147,171-180.

Li, Ruoyan,et al."A fast direct boundary element method for 3D acoustic problems based on hierarchical matrices".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 147(2023):171-180.