Two-dimensional finite-difference time-domain analysis of sound propagation in rigid-frame porous material based on equivalent fluid model

被引：8
|
作者：
Zhao, Jing [1 ]
Chen, Zhifei [1 ]
Bao, Ming [1 ]
Lee, Hyojin [2 ]
Sakarnoto, Shinichi [2 ]
机构：
[1] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China
[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Komaba 4-6-1, Tokyo 1538505, Japan
来源：
APPLIED ACOUSTICS | 2019年 / 146卷
基金：
中国国家自然科学基金;
关键词：
FDTD analysis; Porous material; Equivalent fluid model; BOUNDARY-CONDITIONS; SIMULATION;
D O I：
10.1016/j.apacoust.2018.11.004
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
An equivalent fluid model based finite-difference time-domain algorithm is proposed to simulate the frequency characteristic of rigid-frame porous material in 2-dimensional sound field. Two study cases are simulated at oblique incidence of sound, and the calculated surface impedance agree well with the theoretical value in broad frequency range. The errors are also discussed when simulating a porous material with shape with the staircase approximation. As an example, sound propagation in a porous material with triangular shape is simulated using the algorithm. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：204 / 212
页数：9
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