National Changhua University of Education Institutional Repository : Item 987654321/18325
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题名: A Ring Silencer Design for Reducing Noise of Axial Fan
作者: Wu, Jian-Da;Bai, Mingsian R.
贡献者: 車輛科技研究所
关键词: Ring silencer;Axial fan;Fan noise;Helmholtz resonator;Electro acoustic
日期: 2003
上传时间: 2014-04-29T07:26:13Z
出版者: World Scientific Publishing Company
摘要: In this paper, a ring silencer design for reducing the noise of axial fans is presented. The noise sources on axial fans are usually caused by the fluctuating pressure distribution on the surface of fan blade. Most of the sources are near the trailing edge of blades or boundary region of blades. The ideation of proposed design is based on the principle of Helmholtz resonator for reducing the noise around the fan. The electro-acoustic analogy of this design is presented and simply discussed. Experimental measurement is carried out to evaluate the proposed design for reducing the axial fan noise. The result of experiment indicated that the ring silencer achieved 17 dB in blade passing frequency and 10 dB in other broadband frequency of power spectrum level.
關聯: Fluctuation and Noise Letters, 3(3): 259-264
显示于类别:[車輛科技研究所] 期刊論文

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