Resonance of elliptical muffler chamber having a nonuniformly perforated pipe
Resonance of elliptical muffler chamber having a nonuniformly perforated pipe
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具有不均匀穿孔管的椭圆形消声室的共振
DOI：
10.1002/ecjc.1104
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Tatsuyu Ikeda
中科院分区：
文献类型：
--
作者：
T. Nishimura;T. Ando;Tatsuyu Ikeda
穿孔管是现代汽车消声器中的重要部件，因为这种管降低了流动噪声的声功率，流动噪声的声功率受其速度的显著影响。非均匀穿孔管是消声系统中广泛使用的一种结构形式，其孔口呈带状排列。实验研究了这种穿孔管在椭圆腔中的共振现象。所得到的结果也进行了比较，我们的理论分析方法的预测均匀穿孔管，以澄清的共振机制。结果发现，测量值和理论值之间的差异是小于5赫兹的短管。© 2002 Wiley Periodicals，Inc. Electron Comm Jpn Pt 3，85（7）：22-28，2002;在线发表于Wiley InterScience（www.interscience.wiley.com）。DOI 10.1002/ecjc.1104
Perforated pipe is an essential component in contemporary automotive mufflers, since such a pipe reduces the acoustic power of the flow noise, which is significantly influenced by its velocity. Nonuniformly perforated pipes, the orifices of which are arranged in a belt configuration, are widely used in muffler systems. The resonance of such perforated pipe when located inside the elliptic cavity is investigated experimentally in this paper. The results obtained are also compared with the predictions of our method of theoretical analysis for a uniformly perforated pipe in order to clarify the resonance mechanism. It was found that the difference between the measured and theoretical values is less than 5 Hz for a short pipe. © 2002 Wiley Periodicals, Inc. Electron Comm Jpn Pt 3, 85(7): 22–28, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjc.1104