Low noise design of fan outlet guide vane, part Ⅱ: Numerical verifications

被引：0
|
作者：
Zheng W. [1 ]
Jiang Y. [1 ]
Zhao H. [1 ]
Pan R. [1 ]
Zhao Y. [1 ]
机构：
[1] Shenyang Engine Research Institute of AECC, Shenyang
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2019年 / 40卷 / 10期
关键词：
Aerodynamics-acoustics integrated design; High bypass ratio turbofan; Mode analysis; Non-linear harmonic method; Rotor/stator interaction noise;
D O I：
10.7527/S1000-6893.2019.22956
中图分类号：
学科分类号：
摘要：
As the second part of the 'Low noise design of fan outlet guide vane' serial articles, this paper numerically evaluates the rotor/stator interaction noise of the two swept and leaned Outlet Guide Vanes (OGVs) obtained in the first paper and explored the noise reduction mechanism. First, a non-linear harmonic method is adopted to simulate the fan stage with different OGVs. The perturbation pressure on several sections and blade surface of OGV is investigated and analyzed. It is found that the perturbation pressure amplitudes of the low-noise design OGVs and the interaction noise are significantly reduced. Then, the optimized combination of sweep and lean resulted in a different distribution of phase on the blade surface. The radical variation of phase enhances the cancelation of the response of OGV to the rotor wake, being conducive of noise reduction. Finally, Wilson's wave splitting method is employed to quantitatively evaluate the sound power levels. The results show that, the rotor/stator interaction noise is reduced dramatically due to the low noise design, and a minimum of 5 dB of noise reduction can be obtained at different power sets except at take off for the 1st BPF. © 2019, Press of Chinese Journal of Aeronautics. All right reserved.
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  • [1] Qiao W.Y., Aeroacoustic of Aeroengines, pp. 168-171, (2010)
  • [2] Lighthill M.J., On sound generated aerodynamically. II Turbulence as a source of sound, Proceeding of the Royal Society of London, Series A, 211, 1107, pp. 564-587, (1952)
  • [3] Cumpsty N.A., A critical review of turbomachinery noise, ASME Journal of Fluids Engineering, 99, pp. 278-293, (1977)
  • [4] Sun X.F., Zhou S., Aeroacoustics, pp. 94-95, (1993)
  • [5] Jiang Y.S., Zheng W.T., Zhao H., Et al., Low noise design of high bypass ratio fan outlet guide vanes, part I: Method and optimization, Acta Aeronautica et Astronautica Sinica, 40, 10, (2019)
  • [6] Woodward R.P., Elliott D.M., Hughes C.E., Et al., Benefit of swept-and-leaned stators for fan noise reduction, Journal of Aircraft, 28, 6, pp. 1130-1138, (2001)
  • [7] Kazin S.B., Radially leaned outlet guide vanes for fan source noise reduction: CR-134486, (1973)
  • [8] Envia E., Nallasamy M., Design selection and analysis of a swept and leaned stator concept, Journal of Sound and Vibration, 228, 4, pp. 793-836, (1999)
  • [9] Zhang W.G., Wang X.Y., Sun X.F., Passive control of fan noise by vane sweep and lean, Acta Aeronautica et Astronautica Sinica, 38, 2, (2017)
  • [10] Namba M., Three-dimensional analysis of blade force and sound generation for an annular cascade in distorted flows, Journal of Sound and Vibration, 50, 4, pp. 479-508, (1977)
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