Elliptic Model for Space-Time Correlations in Turbulent Shear Flows

doi:10.1103/PhysRevE.73.055303

IMECH-IR > 力学所知识产出(1956-2008)

	Elliptic Model for Space-Time Correlations in Turbulent Shear Flows
	He GW(何国威); Zhang JB; He, GW (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
发表期刊	Physical Review E
	2006
卷号	73 期号:5 页码:055303
ISSN	1539-3755
摘要	An elliptic model for space-time correlations in turbulent shear flows is proposed based on a second order approximation to the iso-correlation contours, while Taylor’s hypothesis implies a first-order approximation. It is shown that the space-time correlations are mainly determined by their space correlations and the convection and sweeping velocities. This model accommodates two extreme cases: Taylor’s hypothesis at vanishing sweeping velocity and the sweeping hypothesis at vanishing convection velocity. The result is supported by the data from the direct numerical simulation of turbulent channel flows.
学科领域	力学
DOI	10.1103/PhysRevE.73.055303
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000237951400007
关键词[WOS]	LAGRANGIAN VELOCITY AUTOCORRELATION ; ISOTROPIC TURBULENCE ; CHANNEL FLOW ; STATISTICS ; NUMBER
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas ; Physics, Mathematical
引用统计	被引频次：99[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/311007/15427
专题	力学所知识产出(1956-2008)
通讯作者	He, GW (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	He GW,Zhang JB,He, GW . Elliptic Model for Space-Time Correlations in Turbulent Shear Flows[J]. Physical Review E,2006,73,5,:055303.
APA	何国威,Zhang JB,&He, GW .(2006).Elliptic Model for Space-Time Correlations in Turbulent Shear Flows.Physical Review E,73(5),055303.
MLA	何国威,et al."Elliptic Model for Space-Time Correlations in Turbulent Shear Flows".Physical Review E 73.5(2006):055303.

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