PIV measurements of a turbulent jet issuing from round sharp-edged plate

doi:10.1007/s00348-007-0271-9

CORC > 北京大学 > 工学院

	PIV measurements of a turbulent jet issuing from round sharp-edged plate
	Mi, J. ; Kalt, P. ; Nathan, G. J. ; Wong, C. Y.
刊名	流体力学实验
	2007
关键词	INITIAL CONDITIONS MIXING CHARACTERISTICS AXISYMMETRICAL JETS FLOW FIELD BEHAVIOR VELOCITY NOZZLE ENTRAINMENT
DOI	10.1007/s00348-007-0271-9
英文摘要	An experimental investigation is presented of a turbulent jet issuing from a round sharp-edged orifice plate (OP) into effectively unbounded surroundings. Planar measurements of velocity were conducted using Particle Image Velocimetry (PIV) in the near and transition regions. The Reynolds number, based on the jet initial diameter and velocity, is approximately 72,000. The instantaneous and mean velocities, Reynolds normal and shear stresses were obtained. The centerline velocity decay and the half-velocity radius were derived from the mean velocity. It is revealed that primary coherent structures occur in the near field of the OP jet and that they are typically distributed asymmetrically with respect to the nozzle axis. Comparison of the present PIV and previous hot-wire measurements for the OP jet suggests that high initial turbulence intensity leads to reduced rates of decay and spread of the mean flow field and moreover a lower rate of variation of the turbulence intensity. Results also show that self-similarity of the mean flow is well established from the transition region while the turbulent statistics are far from self-similar within the measured range to 16 diameters.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000245169900011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Mechanical; Mechanics; SCI(E); EI; 57; ARTICLE; 4; 625-637; 42
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155072]
专题	工学院
推荐引用方式 GB/T 7714	Mi, J.,Kalt, P.,Nathan, G. J.,et al. PIV measurements of a turbulent jet issuing from round sharp-edged plate[J]. 流体力学实验,2007.
APA	Mi, J.,Kalt, P.,Nathan, G. J.,&Wong, C. Y..(2007).PIV measurements of a turbulent jet issuing from round sharp-edged plate.流体力学实验.
MLA	Mi, J.,et al."PIV measurements of a turbulent jet issuing from round sharp-edged plate".流体力学实验 (2007).