Volume 30 Issue 2
Feb.  2015
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HE Jing-yu, SHAO Wan-ren, XU Ying-bo, LI Xiao-dong. Experiment of noise reduction in separate flow system using chevron nozzles[J]. Journal of Aerospace Power, 2015, 30(2): 324-330. doi: 10.13224/j.cnki.jasp.2015.02.009
Citation: HE Jing-yu, SHAO Wan-ren, XU Ying-bo, LI Xiao-dong. Experiment of noise reduction in separate flow system using chevron nozzles[J]. Journal of Aerospace Power, 2015, 30(2): 324-330. doi: 10.13224/j.cnki.jasp.2015.02.009
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Experiment of noise reduction in separate flow system using chevron nozzles

doi: 10.13224/j.cnki.jasp.2015.02.009

  • 1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China

  • Received Date: 2013-11-17
  • Publish Date: 2015-02-28
    Abstract
  • The noise reduction characteristics of chevron nozzles was investigated in separate flow system. All the experiments were carried out on the jet noise rig in the anechoic chamber. The effect of the structural parameters and distribution of chevron nozzles on cold jet noise reduction was explored in which shear velocity ratio was 0.92. The results show that chevron nozzles reduce jet noise at low frequencies, but increase jet noise at high frequencies. Besides, chevron nozzles has a best low-frequency noise reduction at downstream with lowest high-frequency noise penalty. The noise is decreased at the low frequencies and the peak noise reduction is 5dB when penetration angles of chevron nozzles are increased. The chevron nozzle only on fan has a good low frequency noise reduction and an ability of noise suppression at high frequencies. Although slight differences are observed with varying number of chevron, it seems that the effect is less significant than that of the penetration angles. The sound pressure level downstream is reduced significantly by chevron nozzles.

     

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    • References(19)
  • [1]
    Tam C K W.Jet noise:since 1952[J].Theoretical and Computational Fluid Dynamics,1998,10(1/2/3/4):393-405.
    [2]
    Tam C K W.The sources of jet noise:experimental evidence[J].Journal of Fluid Mechanics,2008,615:253-292.
    [3]
    Bradbury L J S,Khadem A H.The distortion of a jet by tabs[J].Journal of Fluid Mechanics,1975,70(4):801-813.
    [4]
    Samimy M,Zaman K B M Q.Effect of tabs on the flow and noise field of an axisymmetric jet[J].AIAA Journal,1993,31(3):609-619.
    [5]
    Salikuddin M,Martens S,Janardan B A,et al.Experimental study for multi-lobed mixer high bypass exhaust systems for subsonic jet noise reduction:Part 2 acoustic results[R].AIAA 99-1988,1999.
    [6]
    Gliebe P R,Brausch J F,Majjigi R K,et al.Jet noise suppression[J].Journal of Acoustical Society of America,1995,1(2):207-269.
    [7]
    Krothapalli A,King C J.The role of streamwise vortices on sound generation of a supersonic[R]. AIAA 93-4320,1993.
    [8]
    Callender B,Gutmark E.Far-field acoustic investigation into chevron nozzle mechanisms and trends[J].AIAA Journal,2005,43(1):87-95.
    [9]
    Saiyed N,Mikkelsen K L.Acoustics and thrust of separate-flow exhaust nozzles with mixing devices for high-bypass-ratio engines[R].AIAA 61-2000,1961.
    [10]
    单勇,张靖周,邵万仁,等.冠状喷口抑制涡扇发动机喷流噪声试验和数值研究[J].航空学报,2013,34(5):1046-1056. SHAN Yong,ZHANG Jingzhou,SHAO Wanren,et al.Experimental and numerical research on jet noise suppression with chevron nozzle for turbofan engines[J].Acta Aeronautica et Astronautica Sinica,2013,34(5):1046-1056.(in Chinese)
    [11]
    汪洋海,李晓东.超声速喷流啸声的控制方法[J].推进技术,2007,28(2):211-215. WANG Yanghai,LI Xiaodong.Control methods for supersonic jet screech tones[J].Journal of Propulsion Technology,2007,28(2):211-215.(in Chinese)
    [12]
    Callender B,Gutmark E.Near-field investigation of chevron nozzle mechanisms[J].AIAA Journal,2008,46(1):36-45.
    [13]
    Brown C A,Bridges J.Acoustic efficiency of azimuthal modes in jet noise using chevron nozzles[R].AIAA-2006-2654,2006.
    [14]
    Xia H,Tucker P G.Large-eddy simulations of chevron jet flows with noise predictions[J].International Journal of Heat and Fluid Flow,2009,30(6):1067-1079.
    [15]
    Doty M J,Henderson B S,Kinzie K W.Turbulent flow field measurements of separate flow round and chevron nozzles with pylon interaction using particle image velocimetry[R].AIAA-2004-2826,2004.
    [16]
    Calkins F T,Butler G W.Subsonic jet noise reduction variable geometry chevron[R].AIAA-2004-190,2004.
    [17]
    Bridges J,Brown C A.Parametric testing of chevrons on single flow hot jets[R].AIAA-2004-2824,2004.
    [18]
    Anthony B O,Mark P W.Chevron nozzle performance characterization using stereoscopic DPIV[R].AIAA-2005-444,2005.
    [19]
    Chu W T,Kaplan R E.Use of a spherical concave reflector for jet noise source distribution diagnosis[J].Acoustical Society of America,1976,59(5):1268-1277.
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