Model for propagation speed in turbulent channel flows

doi:10.1103/PhysRevE.86.046307

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	Model for propagation speed in turbulent channel flows
	Pei J ; Chen J ; She Z-S ; Hussain F
刊名	physical review e statistical nonlinear and soft matter physics
	2012
DOI	10.1103/PhysRevE.86.046307
英文摘要	The propagation speed Vc of the streamwise velocity fluctuations u' in turbulent channel flows is calculated using direct numerical simulation (DNS) data at four Mach numbers (M=0, 0.8, 2.0, and 3.0). The profiles of Vc are shown to display remarkable similarity at different M. Quantitative models are developed based on a statistical structure called Velocity-Vorticity Correlation Structure (VVCS), defined as the vorticity region most correlated to velocity fluctuations at a fixed location. Good agreement with DNS-measured propagation velocities is obtained throughout the channel and for all M. The result confirms earlier speculation that the near-wall propagation is due to an advection by coherent vortex structures, and validates the concept of the VVCS.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000309658000005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); EI; PubMed; 3; 4 Pt 2; 046307; 86
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/315665]
专题	工学院
推荐引用方式 GB/T 7714	Pei J,Chen J,She Z-S,et al. Model for propagation speed in turbulent channel flows[J]. physical review e statistical nonlinear and soft matter physics,2012.
APA	Pei J,Chen J,She Z-S,&Hussain F.(2012).Model for propagation speed in turbulent channel flows.physical review e statistical nonlinear and soft matter physics.
MLA	Pei J,et al."Model for propagation speed in turbulent channel flows".physical review e statistical nonlinear and soft matter physics (2012).