电子器件轴流冷却风扇气动噪声周向模态试验

doi:10.3901/JME.2020.18.164

机械工程学报 ›› 2020, Vol. 56 ›› Issue (18): 164-171.doi: 10.3901/JME.2020.18.164

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电子器件轴流冷却风扇气动噪声周向模态试验

孙宗翰¹, 田杰^1,2, 郑浩轩¹, 俞泽安¹, 欧阳华^1,2

1. 上海交通大学机械与动力工程学院上海 200240;
2. 燃气轮机与民用航空发动机教育部工程研究中心上海 200240

收稿日期:2019-08-19 修回日期:2020-04-20 出版日期:2020-09-20 发布日期:2020-11-17
通讯作者: 欧阳华(通信作者),男,1973年出生,研究员,博士研究生导师。主要研究方向为航空发动机不稳定流动及气动声学、风扇/压气机内部流动试验与数值模拟等。E-mail:oyh@sjtu.edu.cn
作者简介:孙宗翰,男,1995年出生。主要研究方向为叶轮机械气动声学。E-mail:szhdjaccount@sjtu.edu.cn

Azimuthal Mode Experiment of Aerodynamic Noise of Axial Flow Fan for Electronic Device Heat Dissipation

SUN Zonghan¹, TIAN Jie^1,2, ZHENG Haoxuan¹, YU Zean¹, OUYANG Hua^1,2

1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240;
2. Engineering Research Center of Gas Turbine and Civil Aero Engine of Ministry of Education, Shanghai 200240

Received:2019-08-19 Revised:2020-04-20 Online:2020-09-20 Published:2020-11-17

摘要/Abstract

摘要： 包含进口不规则形状的电子器件轴流冷却风扇的周向声模态尚不明确，需要对其噪声特性有更加深入的认识。对电子器件散热领域常用的一款变速轴流风扇的气动噪声特性开展试验研究。首先分析了风扇远场噪声频谱特征和指向性，进风一侧一阶叶片通过频率噪声幅值最大，出风一侧三阶叶片通过频率噪声幅值最大，显示进出风口具有不同的离散单音影响因素。风扇驱动电机电源线在静叶支撑上的排线方式对总声压级和噪声指向性有明显的影响。然后基于18和8两种均布测点的模态校正方法，准确识别了冷却风扇进出口前三阶叶片通过频率下的周向声模态分布，在计及风扇进口导流罩非轴对称形状的基础上，对传统的TYLER-SOFRIN动静干涉模态计算公式进行修正，并通过试验证实其有效性。

关键词: 冷却风扇, 噪声频谱, 指向性, 模态识别

Abstract: The azimuthal acoustic mode of the axial cooling fan with imported irregular shapes for electronic device is not clear yet, thus a deeper understanding of its noise characteristics is needed. An experimental study on the aerodynamic noise characteristics of a variable-speed axial flow fan commonly used in the field of electronic device heat dissipation is conducted. First, the far-field noise spectrum characteristics and directivity of the fan are analyzed. The amplitude of 1st order blade passing frequency is the largest on the inlet side while the largest is 3rd order blade passing frequency on the outlet side, indicating there are different influence factors of discrete single tones on the either side. It is found that the setting of the motor wire on the strut has a significant influence on the total sound pressure level and noise directivity. Afterwards, based on the mode correction method utilizing 18 and 8 uniform sampling points, the azimuthal acoustic mode distributions at 1st-3rd order blade passing frequencies on the inlet and outlet sides of the axial flow cooling fan are accurately identified. Considering the non-axisymmetric shape of the fan inlet shroud, the traditional TYLERSOFRIN rotor-stator interaction formula is modified and its effectiveness is verified by experiments.

Key words: cooling fan, noise spectrum, directivity, mode identification

中图分类号:

TH42

孙宗翰, 田杰, 郑浩轩, 俞泽安, 欧阳华. 电子器件轴流冷却风扇气动噪声周向模态试验[J]. 机械工程学报, 2020, 56(18): 164-171.

SUN Zonghan, TIAN Jie, ZHENG Haoxuan, YU Zean, OUYANG Hua. Azimuthal Mode Experiment of Aerodynamic Noise of Axial Flow Fan for Electronic Device Heat Dissipation[J]. Journal of Mechanical Engineering, 2020, 56(18): 164-171.

参考文献

[1] MUGRIDGE B D,MORFEY C L. Sources of noise in axial flow fans[J]. The Journal of the Acoustical Society of America,1972,51(5A):1411-1426.
[2] FITZGERALD J M,LAUCHLE G C. Reduction of discrete frequency noise in small,subsonic axial-flow fans[J]. Journal of the Acoustical Society of America,1984,76(1):158-166.
[3] MORFEY C L. Rotating blades and aerodynamic sound[J]. Journal of Sound and Vibration,1973,28(3):587-617.
[4] 乔渭阳. 航空发动机气动声学[M]. 北京:北京航空航天大学出版社,2010. QIAO Weiyang. Aeroacoustics of aero-engine[M]. Beijing:Beihang University Press,2010.
[5] HUANG Lixi. Characterizing computer cooling fan noise[J]. Journal of the Acoustical Society of America,2003,114(6):3189-3200.
[6] HUANG Lixi,WANG Jian. Acoustic analysis of a computer cooling fan[J]. The Journal of the Acoustical Society of America,2005,118(4):2190-2200.
[7] LU H Z,HUANG Lixi,SO R M C,et al. A computational study of the interaction noise from a small axial-flow fan[J]. Journal of the Acoustical Society of America,2007,122(3):1404-1415.
[8] WANG Jian,HUANG Lixi. Quantification and control of noise sources in a small axial-flow fan[J]. Noise Control Engineering Journal,2006,54(1):27-32.
[9] HODGSON M. Experimental study of the noise emission of personal computer cooling fans[J]. Applied Acou-stics,2006,67(9):849-863.
[10] WANG Chen,ZHANG Weihao,HUANG Lixi. Noise source analysis and control of two axial-flow cooling fans in series[J]. Noise Control Engineering Journal,2016,64(5):677-687.
[11] WANG Chen. Noise source analysis for two identical small axial-flow fans in series under operating condition[J]. Applied Acoustics,2018,129:13-26.
[12] LÉWY S. Theoretical study of the acoustic benefit of an open rotor with uneven blade spacings[J]. Journal of the Acoustical Society of America,1992,92(4):2181-2185.
[13] BOLTEZAR M,MESARIC M,KUHELJ A. The influence of uneven blade spacing on the SPL and noise spectra radiated from radial fans[J]. Journal of Sound & Vibration,1998,216(4):697-711.
[14] TYLER J M,SOFRIN T G. Axial flow compressor noise studies[J]. Transaction of the Society of Automotive Engineers,1962,70:309-332.
[15] LIU J,HOLSTE F,NEISE W. On the azimuthal mode structure of rotating blade flow instabilities in axial turbo-machines[C]//Aeroacoustics Conference. 1996:1741.
[16] PARDOWITZ B,TAPKEN U,ENGHARDT L. Time-resolved rotating instability waves in an annular cascade[C]//18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference). 2012:2132-2145.
[17] PARDOWITZ B,TAPKEN U,SORGE R,et al. Rotating instability in an annular cascade:detailed analysis of the instationary flow phenomena[J]. Journal of Turbomachinery,2014,136(6):061017.
[18] PARDOWITZ B,TAPKEN U,NEUHAUS L,et al. Experiments on an axial fan stage:Time-resolved analysis of rotating instability modes[J]. Journal of Engineering for Gas Turbines and Power,2015,137(6):062505.
[19] 周迪,王晓宇,陈俊,等. 转子叶栅非同步振荡发声特性研究[J]. 航空学报,2015,36(3):737-748. ZHOU Di,WANG Xiaoyu,CHEN Jun,et el. Investigation of sound generation by non-synchronously vibrating rotor blades[J]. Acta Aeronautica et Astro-nautica Sinica,2015,36(3):737-748.
[20] 程礼,杨武奎,梁涛,等. 基于声模态的压气机/风扇气路故障诊断[J]. 机械工程学报,2019,55(13):38-44. CHENG Li,YANG Wukui,LIANG Tao,et el. Failure diagnosis on gas path of fan/compressor based on acoustic mode[J]. Journal of Mechanical Engineering,2019,55(13):38-44.
[21] 王良锋,乔渭阳,纪良,等. 轴流风扇/压气机管道周向声模态的测量[J]. 航空动力学报,2014,29(4):917-926. WANG Liangfeng,QIAO Weiyang,JI Liang,et el. In-duct circumferential acoustic mode measurement of axial fan/compressor[J]. Journal of Aerospace Power,2014,29(4):917-926.
[22] SIJTSMA P,ZILLMANN J. In-duct and far-field mode detection techniques[C]//13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference). 2007:3439-3451.
[23] HUANG Xun. Compressive sensing and reconstruction in measurements with an aerospace application[J]. AIAA Journal,2013,51(4):1011-1016.
[24] YU Wenjun,HUANG Xun. Compressive sensing based spinning mode detections by in-duct microphone arrays[J]. Measurement Science and Technology,2016,27(5):055901.
[25] YU Wenjun,MA Zhengyu,LAU A S H,et al. Analysis and experiment of the compressive sensing approach for duct mode detection[J]. AIAA Journal,2018,56:648-657.
[26] TIAN Jie,YAO Dan,WU Yadong,et al. Exper-imental study on rotating instability mode characteristics of axial compressor tip flow[J]. Experiments in Fluids,2018,59(4):63-75.
[27] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. GB/T 2888-2008风机和罗茨鼓风机噪声测量方法[S]. 北京:中国标准出版社,2008. General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,Standardization Administration of the People's Republic of China. GB/T 2888-2008 Methods of noise measurement for fans blowers compressors and Roots blowers[S]. Beijing:Standards Press of China,2008.
[28] DOUGHERTY R,MENDOZA J. Nacelle in-duct beamforming using modal steering vectors[C]//14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference). 2008:2812-2825.
[29] CALDAS L,BACCALA L A,CUENCA R G,et al. In-duct beamforming noise source estimation mode detection university of são paulo fan rig[C]//21st AIAA/CEAS Aeroacoustics Conference. 2015:2233-2243.

电子器件轴流冷却风扇气动噪声周向模态试验

Azimuthal Mode Experiment of Aerodynamic Noise of Axial Flow Fan for Electronic Device Heat Dissipation

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