Extended self-similar scaling law of multi-scale eddy structure in wall turbulence

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	Extended self-similar scaling law of multi-scale eddy structure in wall turbulence
	Jiang N(姜楠); Wang ZD(王振东); Shu W(舒玮)
刊名	Applied Mathematics and Mechanics (English Edition)
	2000
卷号	21 期号:9 页码:1016-1023
ISSN号	0253-4827
通讯作者	Jiang, N (reprint author), Chinese Acad Sci, Inst Mech LNM, Beijing 100080, Peoples R China.
中文摘要	The longitudinal fluctuating velocity of a turbulent boundary layer was measured in a water channel at a moderate Reynolds number. The extended self-similar scaling law of structure function proposed by Benzi was verified. The longitudinal fluctuating velocity, in the turbulent boundary layer was decomposed into many multi-scale eddy structures by wavelet transform. The extended self-similar scaling law of structure function for each scale eddy velocity was investigated. The conclusions are I) The statistical properties of turbulence could be self-similar not only at high Reynolds number, but also at moderate and low Reynolds number, and they could be characterized by the same set of scaling exponents xi (1)(n) = n/3 and xi (2)(n) = n/3 of the fully developed regime. 2) The range of scales where the extended self-similarity valid is much larger than the inertial range and extends far deep into the dissipation range,vith the same set of scaling exponents. 3) The extended selfsimilarity is applicable not only for homogeneous turbulence, but also for shear turbulence such as turbulent boundary layers.
学科主题	力学
类目[WOS]	Mathematics, Applied ; Mechanics
研究领域[WOS]	Mathematics ; Mechanics
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000165748200006
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16840]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Jiang N,Wang ZD,Shu W. Extended self-similar scaling law of multi-scale eddy structure in wall turbulence[J]. Applied Mathematics and Mechanics (English Edition),2000,21(9):1016-1023.
APA	姜楠,王振东,&舒玮.(2000).Extended self-similar scaling law of multi-scale eddy structure in wall turbulence.Applied Mathematics and Mechanics (English Edition),21(9),1016-1023.
MLA	姜楠,et al."Extended self-similar scaling law of multi-scale eddy structure in wall turbulence".Applied Mathematics and Mechanics (English Edition) 21.9(2000):1016-1023.