Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence
	Tian HP; Yang SQ; Cheng L; Wang Y; Jiang N(姜楠)
刊名	THEORETICAL & APPLIED MECHANICS LETTERS
	2013-09-10
通讯作者邮箱	nanj@tju.edu.cn
卷号	3 期号:5 页码:14-052002
关键词	wall-bounded turbulence antisymmetric quadrupole mode Tomo-TRPIV vortex packet coherent structure
ISSN号	2095-0349
通讯作者	姜楠
产权排序	[Haiping Tian1, Shaoqiong Yang1, Lu Cheng1, Yuan Wang1, Nan Jiang1,2,3] 1. Department of Mechanics, Tianjin University, Tianjin 300072, China; 2. Tianjin Key Laboratory of Modern Engineering Mechanics, Tianjin 300072, China; 3. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, CAS, Beijing 100190, China
合作状况	国内
中文摘要	Experiments were conducted in a water tunnel by tomographic time-resolved particle image velocimetry (Tomo-TRPIV). The Reynolds number Reθ is 2 460 on the base of momentum thickness. According to the physical mechanism of the stretch and compression of multi-scale vortex structures in the wall-bounded turbulence, the topological characteristics of turbulence statistics in logarithmic layer were illustrated by local-averaged velocity structure function. During coherent structures bursting, results reveal that the topological structures of velocity gradients, velocity strain rates and vorticities behave as antisymmetric quadrupole modes. A three-layer antisymmetric quadrupole vortex packet confirms that there is a tight relationship between the outer layer and the near-wall layer.
学科主题	湍流
原文出处	http://dx.doi.org/10.1063/2.1305202
语种	英语
公开日期	2013-12-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47606]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Tian HP,Yang SQ,Cheng L,et al. Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2013,3(5):14-052002.
APA	Tian HP,Yang SQ,Cheng L,Wang Y,&姜楠.(2013).Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence.THEORETICAL & APPLIED MECHANICS LETTERS,3(5),14-052002.
MLA	Tian HP,et al."Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence".THEORETICAL & APPLIED MECHANICS LETTERS 3.5(2013):14-052002.