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多喷管射流气动声学特性的数值研究 被引量:4

Numerical Simulation for Multi-Jet Aeroacoustics
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摘要 采用大涡模拟结合动力Smagorinsky亚格子模型对四喷管超声速高温射流进行了三维非稳态数值模拟。基于非稳态计算的结果,利用FW-H面积分方法对四喷管射流远场的声学特性进行计算,并将结果与单喷管得到的结果进行对比。结果表明,多喷管射流形成了复杂的流场,其产生的气动声场并不仅仅是单喷管简单的叠加,由于四股射流之间的相互影响使得声场也产生了新的特点,不但表现在总声压级数值上,还对改变了射流噪声辐射的指向性,最大声压级的位置由原来的50°左右变化到30°。 Large Eddy Simulation(LES) with Dynamic Smagorinsky Sub-Grid Model(SGS) was applied to simulate the 3-D unsteady supersonic hot multi-jet flow.Based on the results of the simulation,far field aeroacoustics of multi-jet were predicted by the Ffowcs Williams-Hawkings(FW-H) surface integral method and the results were compared with single nozzle.It shows that the flow field of multi-jet is complicated and the sound fields are not just a simple superposition of single nozzle.Some new characteristics are shown up.It changes not only the Overall Sound Pressure(OASPL) profile,but also the direction of radiation from 50° to 30°.
出处 《推进技术》 EI CAS CSCD 北大核心 2012年第3期430-435,共6页 Journal of Propulsion Technology
基金 国家自然科学基金(51005179)
关键词 多喷管 射流流场 气动声学 数值模拟 大涡模拟 Multi-nozzles Jet flow Aeroacoustics Numerical simulation Large eddy simulation(LES)
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  • 1Kandula M. On the scaling laws for jet noise in subsonic and supersonic flow[R].AIAA 2003-3288, 2003.
  • 2Kandula M. Near-field acoustics of clustered rocket engines[R].AIAA 2005-3091,2005.
  • 3Sutherland L C. Progress and problems in rocket noise prediction for ground facilities[R]. AIAA 93-4383.
  • 4Seiner J M, Ponton M K. The effects of temperature on supersonic jet noise emission [ R ]. DGLR/AIAA 92-02-046.
  • 5Freund J B, Lele S K, Moin P. Direct simulation of a Mach 1.92 jet and its sound field[ R]. AIAA 98-2291.
  • 6Freund J B. Noise sources in a low Reynolds number turbulent jet at Mach 0.9 [J]. J. Fluid Mech. , 2001,438 : 277- 305.
  • 7Lupoglazoff N, Biancherln A. Comprehensive 3D unsteady simulations of subsonic and supersonic hot jet flow field. part I : aerodynamic analysis [ R ]. AIAA -2002-2599.
  • 8Lupoglazoff N, Biancherin A. Comprehensive 3D unsteady simulations of subsonic and supersonic hot jet flow field. part II : acoustics analysis [ R ]. AIAA -2002-2600.
  • 9Pontoon M K, Seiner J M. The Effects of Exit Lip Thickness on Plume Resonance. Journal of Sound and Vibration, 1922, 154:531-549
  • 10Christopher K W Tam. Supersonic Jet Noise. Annual Review of Fluid Mechanic, 1995, 27:17-43

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