设计图表和实验的声音衰减在圆形内衬

SICE '99. Proceedings of the 38th SICE Annual Conference. International Session Papers (IEEE Cat. No.99TH8456) Pub Date : 1999-07-28 DOI:10.1109/SICE.1999.788595

Ken'ichi Yunoki, Shiro, Yoichi Ando

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引用次数: 1

摘要

本文通过改变圆形内衬管道内表面的复反射系数值，研究了管道的消声特性。本研究首先利用复反射系数和频率参数求解特征值方程。接下来，在计算声强后，显示了管道两个横截面之间的声衰减。另一方面，上述理论结果也得到了实验的证实。测量了两种内衬管道的复反射系数和声衰减。实验结果与理论结果基本吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design charts and experiment for sound attenuation in a circular lined

In this paper, sound attenuation characteristics of a circular lined duct are studied generally by varying the value of a complex reflection coefficient at its inner surface. In this study, at first, eigenvalue equations are solved by using a complex reflection coefficient and and frequency parameter. Next, the sound attenuations between two cross sections of the duct are shown,after sound intensities are calculated. On the other hand,the above theoretical results are confirmed by the experiments. We measured the complex reflection coefficients and the sound attenuation of two kinds of lined ducts. The experimental results about sound attenuation approximately coincided with theoretical ones.

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SICE '99. Proceedings of the 38th SICE Annual Conference. International Session Papers (IEEE Cat. No.99TH8456)

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