Large-eddy simulation of circular cylinder flow at subcritical Reynolds number: Turbulent wake and sound radiation

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	Large-eddy simulation of circular cylinder flow at subcritical Reynolds number: Turbulent wake and sound radiation
	Guo L; Zhang X(张星); He GW(何国威)
刊名	ACTA MECHANICA SINICA
	2016
通讯作者邮箱	hgw@lnm.imech.ac.cn
卷号	32 期号:1 页码:1-11
关键词	Flows past circular cylinder Aerodynamic noise Large-eddy simulation Unstructured grid Acoustic analogy
ISSN号	0567-7718
通讯作者	He, GW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
产权排序	[Guo, Li] China Acad Aerosp Aerodynam, Beijing 100074, Peoples R China; [Guo, Li; Zhang, Xing; He, Guowei] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
中文摘要	The flows past a circular cylinder at Reynolds number 3900 are simulated using large-eddy simulation (LES) and the far-field sound is calculated from the LES results. A low dissipation energy-conserving finite volume scheme is used to discretize the incompressible Navier-Stokes equations. The dynamic global coefficient version of the Vreman's subgrid scale (SGS) model is used to compute the sub-grid stresses. Curle's integral of Lighthill's acoustic analogy is used to extract the sound radiated from the cylinder. The profiles of mean velocity and turbulent fluctuations obtained are consistent with the previous experimental and computational results. The sound radiation at far field exhibits the characteristic of a dipole and directivity. The sound spectra display the power law. It is shown that Vreman's SGS model in company with dynamic procedure is suitable for LES of turbulence generated noise.
分类号	二类
类目[WOS]	Engineering, Mechanical ; Mechanics
研究领域[WOS]	Engineering ; Mechanics
关键词[WOS]	Flows past circular cylinder ; Aerodynamic noise ; Large-eddy simulation ; Unstructured grid ; Acoustic analogy
收录类别	SCI ; EI ; CSCD
原文出处	http://dx.doi.org/10.1007/s10409-015-0528-0
语种	英语
CSCD记录号	CSCD:5660703
WOS记录号	WOS:000371242000001
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/59512]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Guo L,Zhang X,He GW. Large-eddy simulation of circular cylinder flow at subcritical Reynolds number: Turbulent wake and sound radiation[J]. ACTA MECHANICA SINICA,2016,32(1):1-11.
APA	Guo L,张星,&何国威.(2016).Large-eddy simulation of circular cylinder flow at subcritical Reynolds number: Turbulent wake and sound radiation.ACTA MECHANICA SINICA,32(1),1-11.
MLA	Guo L,et al."Large-eddy simulation of circular cylinder flow at subcritical Reynolds number: Turbulent wake and sound radiation".ACTA MECHANICA SINICA 32.1(2016):1-11.