A Non-Singular Boundary Element Method for Interactions between Acoustical Field Sources and Structures  

作　　者：Qiang Sun 

机构地区：[1]Australian Research Council Centre of Excellence for Nanoscale Biophotonics,School of Science,RMIT University,Melbourne,VIC 3001,Australia

出　　处：《Advances in Applied Mathematics and Mechanics》2023年第4期831-851,共21页应用数学与力学进展（英文）

基　　金：supported by the Australian Research Council(ARC)through Grants DE150100169,FT160100357 and CE140100003.

摘　　要：Localized point sources(monopoles)in an acoustical domain are implemented to a three dimensional non-singular Helmholtz boundary element method in the frequency domain.It allows for the straightforward use of higher order surface elements on the boundaries of the problem.It will been shown that the effect of the monopole sources ends up on the right hand side of the resulting matrix system.Some carefully selected examples are studied,such as point sources near and within a concentric spherical core-shell scatterer(with theoretical verification),near a curved focusing surface and near a multi-scale and multi-domain acoustic lens.

关 键 词：Acoustic monopoles acoustic lens boundary integral method quadratic elements 

分 类 号：O17[理学—数学]