A numerical study of a turbulent mixing layer and its generated noise

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	A numerical study of a turbulent mixing layer and its generated noise
	Li D(李栋); Guo L(郭力); Zhang X(张星); He GW(何国威); He, GW(reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
发表期刊	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2013-06-01
卷号	56 期号:6 页码:1157-1164
ISSN	1674-7348
摘要	A direct numerical simulation of a turbulent mixing layer with the Reynolds number 500 and the convective Mach number 0.6 is performed and the results obtained are used to study the turbulent flow field and its generated noise. In the present simulation, the numerical techniques of absorbing buffer zones, artificial convection velocity and spatial filtering are used to achieve nonreflecting boundary conditions. The self-similarity is used to validate the present numerical simulations. The large-scale coherent structures are plotted together with the acoustic waves, which demonstrates the directivity of acoustic waves. The Lighthill’s source and space-time correlations are further investigated. The main contributions to mixing noise are identified in terms of large-scale coherent structures, Lighthill’s source and space-time correlations.
关键词	Direct Numerical Simulation Mixing Layer Space-time Correlation Noise
学科领域	湍流
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000319072700017
项目资助者	This work was supported by the National Natural Science Foundation of China (Grant Nos. 11232011 and 11021262) and the National Basic Research Program of China (Grant No. 2013CB834100) (Nonlinear science)
课题组名称	LNM湍流
论文分区	二类/Q3
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47277
专题	非线性力学国家重点实验室
通讯作者	He, GW(reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Li D,Guo L,Zhang X,et al. A numerical study of a turbulent mixing layer and its generated noise[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013,56,6,:1157-1164.
APA	Li D,Guo L,Zhang X,He GW,&He, GW.(2013).A numerical study of a turbulent mixing layer and its generated noise.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,56(6),1157-1164.
MLA	Li D,et al."A numerical study of a turbulent mixing layer and its generated noise".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 56.6(2013):1157-1164.

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