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	Research on relationship between vortex and sound of moderately under-expanded supersonic impinging jet
	Cui Xinguang ; Yao Zhaohui ; Zhang Xiwen
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ flow simulation Fourier analysis jets Navier-Stokes equations Runge-Kutta methods shock waves supersonic flow vortices/ vortex supersonic impinging jet flat plate large-eddy simulation third-order upwind compact difference fourth-order symmetric compact scheme nondimensional axisymmetric compressible equations Favre-filtered Navier-Stokes equations third-order Runge-Kutta method TVD property temporal discretization shock wave wave traveling sound sources swirling strength shear layer pressure change Fourier analysis/ A4730 Rotational flow, vortices, buoyancy and other flows involving body forces A4755C Jets in fluid dynamics A4710 General fluid dynamics theory, simulation and other computational methods A4740K Supersonic and hypersonic flows A4740N Shock-wave interactions A0230 Function theory, analysis
中文摘要	This paper studies moderately under-expanded supersonic jet impinging on flat plate by using large-eddy simulation. A third-order upwind compact difference and a fourth-order symmetric compact scheme are employed to discretize the nondimensional axisymmetric compressible Favre-filtered Navier-Stokes equations in space, while the third-order Runge-Kutta method with the TVD property is adopted to deal with the temporal discretization. The numerical results are first validated with the experimental data of the classic impinging jet. The shock wave and vortex structure with different scales in the flowfield, the wave traveling upon and reflecting back, and sound sources in different locations are acquired in the simulation. The frequencies of the change of pressure and swirling strength in the shear layer at different position, pressure change on the impinging plate, and the vortex merging in the jet shear layer are obtained with Fourier analysis. We found that the change of pressure and swirling strength in the shear layer, pressure change on the impinging plate, and vortex merging in the jet shear layer are associated with impinging tone.
语种	中文
出版者	Chinese Journal of Mechanics Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78924]
专题	清华大学
推荐引用方式 GB/T 7714	Cui Xinguang,Yao Zhaohui,Zhang Xiwen. Research on relationship between vortex and sound of moderately under-expanded supersonic impinging jet[J],2010, 2010.
APA	Cui Xinguang,Yao Zhaohui,&Zhang Xiwen.(2010).Research on relationship between vortex and sound of moderately under-expanded supersonic impinging jet..
MLA	Cui Xinguang,et al."Research on relationship between vortex and sound of moderately under-expanded supersonic impinging jet".(2010).

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