An effective absorbing boundary algorithm for acoustical wave propagator

作     者：Lin Zhibin ,Lu Jing and Xu Boling(Key Laboratory of Modern Acoustics,Institute of Acoustics,Nanjing University,Nanjing 210093,China) 

作者机构：Key Laboratory of Modern Acoustics Institute of Acoustics Nanjing University Nanjing 210093 China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2007年第17卷第9期

页      面：1012-1017页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：Supported by National Natural Science Foundation of China(Grant Nos.60340420325and10604030) the Research Fund for the Doctoral Program of Higher Education of China(Grant No.20040284038) 

主　　题：acoustical wave propagator perfectly matched layer absorbing boundary conditions(ABC). 

摘      要：In this paper,Berenger’s perfectly matched layer(PML)absorbing boundary condition for electromagnetic waves is introduced as the truncation area of the computational domain to absorb one-dimensional acoustic wave for the scheme of acoustical wave propagator(AWP).To guarantee the efficiency of the AWP algorithm,a regulated propagator matrix is derived in the PML *** simulations of a Gaussian wave packet propagating in one-dimensional duct are carried out to illustrate the efficiency of the combination of PML and *** with the traditional smoothing truncation windows technique of AWP,this scheme shows high computational accuracy in absorbing acoustic wave when the acoustical wave arrives at the computational *** coefficients of the PML configurations are also discussed.