摘要
本文实现了具有吸声衬里的圆管内三维声传播计算,提供了全部数值计算方法和差分格式。并讨论了吸声材料各种不同的周向布置对声衰减的影响。计算结果表明,面对面的周向布置声衰减效果最好。
The numerical calculation of sound propagation in 3-D lined circular ducts has been completed. In this paper, the numerical method and the finite difference schemes are offered, and the effect of various circumferential distributions of the absorbing material on sound attenuation is also discussed. It is shown by the numerical solutions that the face-to-face circumferential distribution has optimum sound attenuation.
出处
《声学学报》
EI
CSCD
北大核心
1989年第4期241-249,共9页
Acta Acustica
基金
国家自然科学基金重大资助项目
