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The control method of the inflow turbulence interaction noise for router cooling fan

  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The aerodynamic noise of router cooling fans receives much attention due to the increasing router power. In this paper, the characteristics of the flow field and the sound field of the cooling fan are studied experimentally. The interaction of inflow turbulence with the cooling fan is identified as one of the main noise generation mechanism. Based on such understanding, inflow screens are designed to control the inflow turbulence intensity and the noise generation. Experimental results show that both the area of the high-turbulence-intensity region and the turbulence intensity are obviously reduced by the screen. The inflow turbulence intensity can be reduced by 60% in the centre region when the screens are used. The screens can reduce both tunes and broadband noise over a wide frequency range and have litter effect on flow field.

源语言英语
主期刊名21st International Congress on Sound and Vibration 2014, ICSV 2014
出版商International Institute of Acoustics and Vibrations
1896-1902
页数7
ISBN(电子版)9781634392389
出版状态已出版 - 2014
活动21st International Congress on Sound and Vibration 2014, ICSV 2014 - Beijing, 中国
期限: 13 7月 201417 7月 2014

出版系列

姓名21st International Congress on Sound and Vibration 2014, ICSV 2014
3

会议

会议21st International Congress on Sound and Vibration 2014, ICSV 2014
国家/地区中国
Beijing
时期13/07/1417/07/14

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