小型轴流风扇结构改进的气动及声学研究

李虹; 刘维柱

doi:10.13433/j.cnki.1003-8728.2014.0622

小型轴流风扇结构改进的气动及声学研究

doi: 10.13433/j.cnki.1003-8728.2014.0622

李虹^1,2,
刘维柱³

1.
安徽理工大学,机械工程学院淮南 232001;
2.
浙江理工大学,机械与控制学院杭州 310018;
3.
安徽理工大学,实验室与设备管理处淮南 232001

基金项目:

安徽省教育厅高校省级自然科学研究项目(KJ2012B061)资助

详细信息

作者简介:
李虹(1968-)，讲师，博士研究生，研究方向为高端流体应用技术与流体机械设计，jxlhjxh@126.com

计量
- 文章访问数: 104
- HTML全文浏览量: 17
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2012-10-23
- 刊出日期: 2015-06-10

Numerical Study on Aerodynamics and Acoustic Performance for the Improved Structure of Small Axial Flow Fan

Li Hong^1,2,
Liu Weizhu³

1.
School of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232001;
2.
School of Mechanical Engineering Automation,Zhejiang Sci-Tech University,Hangzhou 310018;
3.
Management Office of Laboratory and Equipment,Anhui University of Science and Technology,Huainan 232001

摘要

摘要: 小型轴流风扇为电脑CPU等的重要散热器件。为改善其气动及声学性能,提出了一种新型改进结构。对于原型和改进型,首先应用rNG k-ε湍流模型模拟了稳态流场,进行了静态特性的计算;然后以稳态流场为初始解,运用非稳态大涡模拟模型结合FH-W声学模型、傅里叶变换,计算了风扇进口、出口及内部的监测点噪声;并进行了静态特性和声学性能的实验研究。数值计算与实验结果表明:改进结构在提高静态特性及降噪两个方面效果良好,可在生产实践中加以应用推广。
- 小型轴流风扇 /
- 静态特性 /
- 噪音 /
- 数值计算
Abstract: Small axial flow fan is an important device for heat dissipation of computer CPU, etc. To improve itsaerodynamics and acoustics performance, a new improved structure was put forward. For the prototype and theimproved type, rNG k-ε turbulence model was applied to simulate the steady flow field, and the staticcharacteristics are calculated. Then regarding the steady flow field as the initial solutions, the noise was calculatedfor the monitoring points at the fan inlets, outlets and inners by using the unsteady large eddy simulation modeltogether with the FH-W acoustic model and Fourier transform. And the experimental investigations on the staticcharacteristics and the noise were also carried out. The results indicates that the improved structure has better effecton the static characteristics and noise abatement, and can be applied in production practice.
- acoustics /
- aerodynamics /
- axial flow /
- computer simulation

HTML全文

参考文献(11)

[1]	Shiomi N,Jin Y Z,Kenji Kaneko,et al．Flow fields with tip leakage vortex in a small axial cooling fan[C]//Luoyang China: and Asian Joint Workshop on Thermo Physics and Fluid Science,2008: 36-42
[2]	杨爱玲,陈康民．掠动叶对小型轴流风扇转子气动及声学特性的影响研究[J]. 流体机械,2002,30 (1):18-20Yang A L,Chen K M．The influence of swept blades on the aerodynamic-aeroacoustic performance of the rotors of small axial fans[J]. Fluid Machinery,2002,30(1):18-20 (in Chinese)
[3]	李扬．周向前弯叶片对气动声学性能影响[J]. 航空动力学报,2009,24(7): 1606-1609Li Y．Effect of circumferential forward-skewed blade on aeroacoustic performance of axial fan[J]. Journal of Aerospace Power，2009，24(7):1606-1609 (in Chinese)
[4]	邓文剑,楚武利,吴艳辉,等．离心泵整机非定常特性数值研究[J]. 机械科学与技术,2009,28(6): 744-748Deng W J,Chu W L,Wu Y H,et al．Numerical study of the unsteady characteristics of a whole 3D flow-field within a centrifugal pump[J]. Mechanical Science and Technology for Aerospace Engineering,2009,28 (6) 744-748 (in Chinese)
[5]	毛义军,祁大同．叶轮机械气动噪声的研究进展[J].力学进展,2009,39(2): 189-202Mao Y J,Qi D T．review of aerodynamic noise in turbomachinery[J]. Advances in Mechanics,2009,39(2): 189-202 (in Chinese)
[6]	Ffowcs Williams J E,Hawkings D L．Sound generated by turbulence and surfaces in arbitrary motion [J].Philosophical Transactions of the royal Society,1969，A264(1151): 321-342
[7]	roland Ewert．Broadband slat noise prediction based on CAA and stochastic sound source from a fast random particle-mesh (rPM) method [J]. Computers &Fluids,2008，(37): 369-387
[8]	周新祥．噪声控制及应用实例[M]. 北京: 海洋出版社,1999Zhou X X．Noise control and application examples[M].Beijing: China Ocean Press,1999 (in Chinese)
[9]	金向红．轴流式气液旋流分离器的试验研究与数值模拟[D]. 东营: 中国石油大学(华东),2009Jin X H．Numerical simulation and experimental studies on the axial flow type gas-liquid cyclone separator[D].Dongying: China University of Petroleum,2009 (in Chinese)
[10]	Howe M S．Theory of vortex sound[M]. Cambridge:Cambridge University Press,2003
[11]	中华人民共和国国家质量监督检验检疫总局.GB/T 2888/91 风机和罗茨鼓风机噪声测量方法[S]. 北京: 中国标准出版社,1992General Administration of Quality Supervision，Inspection and Quarantine of the People' s republic of China．GB/T 2888/91 methods of measurement for fans blowers compressors and roots blowers[S]. Beijing:China Standard Publishing House,1992 (in Chinese)