Theoretical and experimental studies on the noise control of centrifugal fans combining absorbing liner and inclined tongue

被引：7

作者：

Gu, Y. ^{[1
]}

Qi, D. ^{[1
]}

Mao, Y. ^{[1
]}

Wang, X. ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Dept Fluid Machinery Engn, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China

[2] Shenyang Blower Works Grp Co Ltd, Shenyang, Peoples R China

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY | 2011年 / 225卷 / A6期

基金：

中国国家自然科学基金;

关键词：

noise reduction; sound-absorption volute; broadband noise; centrifugal fan; experimental study; UNSTEADY-FLOW; COMPUTATION; REDUCTION;

D O I：

10.1177/0957650911414804

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In previous work, it has been validated that the inclined tongue has a significant effect on controlling the tonal noise of centrifugal fans. In order to reduce the broadband noise of centrifugal fans, theoretical and experimental research studies have been implemented to study the effect of the sound-absorption volute on noise propagation. First, a mathematical-physical model of the sound-absorption volute is established to explore the influence of the sound-absorption coefficient of the liner, which is dependent on the liner thickness, cavity depth, etc. Then, an experimental study is carried out to measure the coupling effect between the absorbing liner and the inclined tongue and its potential for the noise control of centrifugal fans. The experimental results agree well with the theoretical result, and validate the mathematical-physical model, proving it a practical model for further optimization of the sound-absorption volute. In addition, the results indicate that considerable noise reduction can be achieved by combining both the posed absorbing liner and modified inclined tongue.

引用

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页码：789 / 801

页数：13

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