Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics

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	Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics
	Jia YX; Tang ZQ; Jiang N(姜楠)
刊名	Science China-Physics Mechanics & Astronomy
	2011
通讯作者邮箱	nanj@tju.edu.cn
卷号	54 期号:7 页码:1319-1327
关键词	Turbulent Boundary Layer Coherent Structure Complex Eddy Viscosity Model Reynolds Stress Phase Difference Turbulent-Boundary-Layer Wave
ISSN号	1674-7348
通讯作者	Jiang, N (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China
产权排序	[Jiang Nan] Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China; [Jia YongXia; Tang ZhanQi; Jiang Nan] Tianjin Univ, Sch Mech Engn, Dept Mech, Tianjin 300072, Peoples R China; [Jiang Nan] Tianjin Key Lab Modern Engn Mech, Tianjin 300072, Peoples R China
合作状况	国内
中文摘要	Time sequence signals of streamwise and normal velocity components, as well as velocity strain rate, at different vertical locations in the turbulent boundary layer over a smooth flat plate in a wind tunnel have been finely examined by the use of double-sensor hot-wire anemometry. The local module maximum for wavelet coefficient of longitudinal velocity component, as a detecting index, is employed to educe the ejection and sweep process of the coherent structure burst in the turbulent boundary layer from the random fluctuating background. The coherent waveforms of Reynolds stress residual contribution term for random fluctuations to coherent structure, as well as the velocity strain rate of coherent structure, are extracted by the conditional phase average technique. Based on the theoretical analysis of eddy viscosity coefficient in complex eddy viscosity model for coherent structure, the macro-relaxation effect between Reynolds stress residual contribution term of random fluctuations to coherent structure and the velocity strain rate of coherent structure is studied and the variations of the phase difference between them across the turbulent boundary layer are investigated experimentally. The rationality of complex eddy viscosity model for coherent structure is confirmed through the investigation.
学科主题	Physics
分类号	二类/Q3
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	TURBULENT-BOUNDARY-LAYER ; WAVE
收录类别	SCI ; EI
资助信息	This work was jointly supported by the National Natural Science Foundation of China (Grant Nos. 10832001 and 10872145), and Opening Subject of State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences.
原文出处	http://dx.doi.org/10.1007/s11433-011-4370-5
语种	英语
WOS记录号	WOS:000291951500026
公开日期	2012-04-01
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/44920]
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	Jia YX,Tang ZQ,Jiang N. Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics[J]. Science China-Physics Mechanics & Astronomy,2011,54(7):1319-1327.
APA	Jia YX,Tang ZQ,&姜楠.(2011).Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics.Science China-Physics Mechanics & Astronomy,54(7),1319-1327.
MLA	Jia YX,et al."Experimental investigation of Reynolds stress complex eddy viscosity model for coherent structure dynamics".Science China-Physics Mechanics & Astronomy 54.7(2011):1319-1327.