Experimental Analysis for Jet Noise Reduction of Chevron Pylon-Based Nozzles

Jing Yu He; Ying Bo Xu

doi:10.4028/www.scientific.net/AMR.1078.183

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1078Experimental Analysis for Jet Noise Reduction of...

Experimental Analysis for Jet Noise Reduction of Chevron Pylon-Based Nozzles

Abstract:

The experimental analysis is conducted for jet noise reduction of separate flow chevron pylon-based nozzles at takeoff condition. The experimental results indicate that the pylon makes a noise reduction at low-frequency but produces an increase at high-frequency, together with an overall sound pressure reduction below the pylon. Compared to chevron nozzle without pylon, the adding of a pylon reduces noise benefit of chevron nozzles found in the isolated nozzle without a pylon. The best low-frequency noise reduction is located below the pylon where peak noise reduction is as high as about 1.3dB on frequency spectrum.

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Periodical:

Advanced Materials Research (Volume 1078)

Pages:

183-186

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1078.183

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Online since:

December 2014

Authors:

Jing Yu He*, Ying Bo Xu

Keywords:

Chevron Nozzle, Jet Noise, Pylon, Separate Flow

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References

[1] Saiyed N H, Mikkelsen K L, Bridges J. Acoustics and Thrust of Separate-Flow Exhaust Nozzles With Mixing Devices for High-Bypass-Ratio Engines [J]. AIAA Paper 2000-(1961).

DOI: 10.2514/6.2000-1961

Google Scholar

[2] Bridges J, Wernet M P. Turbulence Measurements of Separate Flow Nozzles with Mixing Enhancement Features [J]. AIAA Paper 2002-2484, (2002).

DOI: 10.2514/6.2002-2484

Google Scholar

[3] Zhuang Jiayu, Li Xiaodong. An experimental Study of Jet Noise Suppression Methods [J]. Journal of Propulsion Technology, 2008, 29(4): 588-590.

Google Scholar

[4] Michael J D, Brenda SH, et al. Turbulent Flow Field Measurements of Separate Flow Round and Chevron Nozzles with Pylon Interaction Using Particle Image Velocimetry [R]. AIAA 2004-2826.

DOI: 10.2514/6.2004-2826

Google Scholar

[5] Tam C K W, Golebiowski M, Seiner J. M. On the Two Components of Turbulent Mixing Noise from Supersonic Jets [R]. AIAA 1996-1716.

DOI: 10.2514/6.1996-1716

Google Scholar

[6] Rask O, Gutmark E, Martens S. Acoustic Investigation of a High Bypass Ratio Separate Flow Exhaust System with Chevrons [R]. AIAA 2004-0009.

DOI: 10.2514/6.2004-9

Google Scholar