低中等雷诺数超声速轴对称射流气动声场

郑美香; 方一红; 赵磊

doi:10.13224/j.cnki.jasp.2017.12.026

低中等雷诺数超声速轴对称射流气动声场

doi: 10.13224/j.cnki.jasp.2017.12.026

天津大学机械工程学院力学系，天津 300072

基金项目: 国家自然科学基金重点项目（11332007）；国家自然科学基金（10972156）

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出版历程
- 收稿日期: 2016-05-11
- 刊出日期: 2017-12-28

Aerodynamic acoustic field of axisymmetric supersonic jet at low and moderate Reynolds number

摘要

摘要: 采用线性抛物化稳定性方程(LPSE)方法对低、中等雷诺数条件下的超声速轴对称射流进行了研究。结果表明：射流中不稳定波的增长特性决定了声辐射的特性。在低雷诺数条件下，不稳定波的频率范围较窄，且由于不稳定波的增长区间较长，因此声辐射的范围较宽，声源不集中，声辐射的方向角不明确。在中雷诺数条件下，不稳定波的频率范围较宽，且由于不稳定波的增长区间较短，因此声辐射的范围较窄，声源集中，声辐射的方向角较明确；且随着斯特劳哈尔数增加，声辐射的方向角增加。在低雷诺数条件下，射流基本流的法向速度对射流气动声场的影响较弱，而在中等雷诺数条件下，其对射流的气动声场影响较强。
- 超声速轴对称射流 /
- 低中等雷诺数 /
- 气动声场 /
- 线性抛物化稳定性方程(LPSE) /
- 不稳定波 /
- 声辐射
Abstract: Acoustic field properties of an axisymmetric supersonic jet at both low and moderate Reynolds numbers were studied using the linear parabolized stability equations (LPSE). The results showed that, the dominant noisegeneration mechanism was determined by the characteristics of unstable wave. When Reynolds number was low, the unstable wave frequency band was relatively narrow. Since the unstable region of the disturbance wave was long along stream wise direction, the acoustic radiation region was large; the sound source was decentralized; and the radiation angle was hard to be determined. For moderately large Reynolds number, the unstable wave had a large unstable frequency wave band; the short unstable region resulted in a narrow radiation region, concentrative sound source and strong radiation directivity; and the direction angle increased with the increase of Strouhal number. The normal velocity had a negligible effect on the acoustic field for low Reynolds number, while it had to be taken into account when Reynolds number was large.
- axisymmetric supersonic jet /
- low and moderate Reynolds number /
- aerodynamic acoustic field /
- linear parabolized stability equations(LPSE) /
- instability waves /
- acoustic radiation

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参考文献(20)

[1]	LIGHTHILL M J.On sound generated aerodynamically：Ⅰ general theory［C］∥Proceedings of the Royal Society of London:A Mathematical,Physical and Engineering Sciences.London:the Royal Society,1952:564-587.
[2]	LIGHTHILL M J.On sound generated aerodynamically：Ⅱ turbulence as a source of sound［C］∥Proceedings of the Royal Society of London:A Mathematical,Physical and Engineering Sciences.London:the Royal Society,1954:1-32.
[3]	CURLE N.The influence of solid boundaries upon aerodynamic sound［C］∥Proceedings of the Royal Society of London:A Mathematical,Physical and Engineering Sciences.London:the Royal Society,1955:505-514.
[4]	WILLIAMS J E F,HAWKINGS D L.Sound generation by turbulence and surfaces in arbitrary motion［C］∥Philosophical Transactions of the Royal Society of London:A Mathematical,Physical and Engineering Sciences.London:the Royal Society,1969:321-342.
[5]	LIU J T C.Developing largescale wavelike eddies and the near jet noise field［J］.Journal of Fluid Mechanics,1974,62(3):437-464.
[6]	郑克扬,桂幸民.喷流噪声实验研究［J］.航空动力学报,1991,6(2):131-133.ZHENG Keyang,GUI Xingmin.An experimental study of jet noise［J］.Journal of Aerospace Power,1991,6(2):131-133.(in Chinese)
[7]	TROUTT T R,MCLAUGHLIN D K.Experiments on the flow and acoustic properties of a moderateReynoldsnumber supersonic jet［J］.Journal of Fluid Mechanics,1982,116(1):123-156.
[8]	TAM C K W,BURTON D E.Sound generated by instability waves of supersonic flows:Part 2 axisymmetric jets［J］.Journal of Fluid Mechanics,1984,138(1):273-295.
[9]	WU X.Mach wave radiation of nonlinearly evolving supersonic instability modes in shear layers［J］.Journal of Fluid Mechanics,2005,523(1):121-159.
[10]	郭娜，超声速轴对称射流气动声场的数值模拟［D］.天津：天津大学，2015.Numerical simulation of the sound field generated by supersonic axisymmetric jet［D］.Tianjin:Tianjin University,2015.(in Chinese)
[11]	MORRIS P J,TAM C K W.Nearand farfield noise from largescale instabilities of axisymmetric jets［R］.AIAA 77-1351,1977.
[12]	MORRISON G L,MCLAUGHLIN D K.Noise generation by instabilities in low Reynolds number supersonic jets［J］.Journal of Sound and Vibration,1979,65(2):177-191.
[13]	MORRISON G L,MCLAUGHLIN D K.Instability process in low Reynolds number supersonic jets［J］.AIAA Journal,1980,18(7):793-800.
[14]	YEN C C,MESSERSMITH N L.Application of parabolized stability equations to the prediction of jet instabilities［J］.AIAA Journal,1998,36(8):1541-1544.
[15]	YEN C C,MESSERSMITH N L.The use of compressible parabolized stability equations for prediction of jet instabilities and noise［R］.AIAA 99-1859,1999.
[16]	PIOT E,CASALIS G,MULLER F,et al.Investigation of the PSE approach for subsonic and supersonic hot jets:etailed comparisons with LES and linearized Euler equations results［J］.International Journal of Aeroacoustics,2006,5(4):361-393.
[17]	LIN R S,REBA R A,NARAYANAN S,et al.Parabolized stability equation based analysis of noise from an axisymmetric hot jet［R］.ASME Paper HT-FED2004-56820,2004.
[18]	MORRISON G L.Flow instability and acoustic radiation measurements of low Reynolds number supersonic jets［D］.Stillwater,Oklahoma:Oklahoma State University,1977.
[19]	HU T F,MCLAUGHLIN D K.Flow and acoustic properties of low Reynolds number underexpanded supersonic jets［J］.Journal of Sound and Vibration,1990,141(3):485-505.
[20]	胡国庆,傅德薰,马延文,等.轴对称射流气动声场的数值模拟［J］.计算物理,2001,18(3):193-198.HU Guoqing,FU Dexun,MA Yanwen,et al.Numerical simulation of the sound field generated by axisymmetric jet［J］.Journal of Computational Physics,2001,18(3):193-198.(in Chinese)