Centreline statistics of the small-scale turbulence of a circular jet   and their dependence on high frequency noise

CORC > 北京大学 > 工学院

	Centreline statistics of the small-scale turbulence of a circular jet and their dependence on high frequency noise
	Xu Min-Yi ; Du Cheng ; Mi Jian-Chun
刊名	物理学报
	2011
关键词	hot-wire anemometer circular jet dissipation rate small-scale turbulence REYNOLDS-NUMBER VELOCITY PLANE
英文摘要	This study systematically investigates the statistics of the centreline small-scale turbulence of a circular jet issuing from a smooth contraction nozzle. Detailed velocity measurements were performed for the exit Reynolds number of Re = 20100, where Re equivalent to U(j)d/v with U-j being the exit mean velocity, d the nozzle diameter and v the kinematic viscosity. After effectively filtering out high frequency noises, statistical properties of the small-scale turbulence were obtained appropriately; those properties include turbulence energy dissipation rate, Kolmogorov length scale, Taylor scale, turbulence Reynolds number, skewness and flatness of the velocity derivative. It is observed that these properties satisfy their self-preserving relations in the far field. It is also revealed that the small-scale turbulence reaches the self-preserving state earlier than does the large-scale motion. Besides, the smallest-scale turbulence depends least on the initial and boundary conditions and therefore behaves most universally across different flows.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000288925700059&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Physics, Multidisciplinary; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 7; 3; 60
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/316041]
专题	工学院
推荐引用方式 GB/T 7714	Xu Min-Yi,Du Cheng,Mi Jian-Chun. Centreline statistics of the small-scale turbulence of a circular jet and their dependence on high frequency noise[J]. 物理学报,2011.
APA	Xu Min-Yi,Du Cheng,&Mi Jian-Chun.(2011).Centreline statistics of the small-scale turbulence of a circular jet and their dependence on high frequency noise.物理学报.
MLA	Xu Min-Yi,et al."Centreline statistics of the small-scale turbulence of a circular jet and their dependence on high frequency noise".物理学报 (2011).