標題: A ring silencer design for reducing noise of axial fan
作者: Wu, JD
Bai, MR
機械工程學系
Department of Mechanical Engineering
關鍵字: ring silencer;axial fan;Helmholtz resonator;fan noise;electro acoustic
公開日期: 1-Sep-2003
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.
URI: http://dx.doi.org/10.1142/S0219477503001348
http://hdl.handle.net/11536/27607
ISSN: 0219-4775
DOI: 10.1142/S0219477503001348
期刊: FLUCTUATION AND NOISE LETTERS
Volume: 3
Issue: 3
起始頁: L259
結束頁: L264
Appears in Collections:Articles