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喷管射流流场及噪音的数值模拟 被引量:6

Numerical simulation of jet flow field and noise in nozzle
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摘要 利用大涡模拟(LES)对喷管超音速高温射流流场进行了三维非稳态数值模拟,根据流场的湍流特性确定声源,选取积分面,利用FW-H方程计算远场观测点的声强,最后与相关文献中的试验结果进行对比。结果表明,该方法得到的计算结果与试验结果较吻合,但由于网格限制,远场的高频声谱存在一定的误差。 This study is focused on using Large Eddy Simulation(LES) to simulate the 3-D unsteady supersonic hot jet flows.Base on turbulence characteristics,noise sources and integral surfaces are selected.The near field data are collected from the LES and then the far field noise is computed by the Ffowcs Williams-Hawkings(FW-H) surface integral method.The results show a good agreement with experimental data.But there are some deviations in the high frequency spectra due to the mesh quality.
出处 《固体火箭技术》 EI CAS CSCD 北大核心 2011年第4期436-439,共4页 Journal of Solid Rocket Technology
关键词 喷射 气动噪音 数值模拟 大涡模拟 jet aerodynamic noise numerical simulation large eddy simulation(LES)
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参考文献6

  • 1Sutherland L C. Progress and problems in rocket noise prediction for ground facilities[R]. AIAA 93-4383.
  • 2Seiner J M, Ponton M K. The effects of temperature on supersonic jet noise emission [ R ]. DGLR/AIAA 92-02-046.
  • 3Freund J B, Lele S K, Moin P. Direct simulation of a Mach 1.92 jet and its sound field[ R]. AIAA 98-2291.
  • 4Freund J B. Noise sources in a low Reynolds number turbulent jet at Mach 0.9 [J]. J. Fluid Mech. , 2001,438 : 277- 305.
  • 5Lupoglazoff N, Biancherln A. Comprehensive 3D unsteady simulations of subsonic and supersonic hot jet flow field. part I : aerodynamic analysis [ R ]. AIAA -2002-2599.
  • 6Lupoglazoff N, Biancherin A. Comprehensive 3D unsteady simulations of subsonic and supersonic hot jet flow field. part II : acoustics analysis [ R ]. AIAA -2002-2600.

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