Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil

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

	Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil
	He GY; Wang Q; Zhang X(张星); Zhang SG; Zhang X(张星)
刊名	Acta Mechanica Sinica
	2012-12-25
通讯作者邮箱	zhangx@lnm.imech.ac.cn
卷号	28 期号:6 页码:1551-1556
关键词	Flapping motion Immersed boundary method Wake Symmetry-breaking
ISSN号	0567-7718
通讯作者	张星 ; LNM, Institute of Mechanics,Chinese Academy of Sciences,100190 Beijing, China
产权排序	[Guo-Yi He1, Qi Wang1, Xing Zhang2, Shu-Guang Zhang3 ]1. The School of Aircraft Engineering, Nanchang Hangkong University, 330063 Nanchang, China;2. LNM, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China;3. The School of Transportation Science and Engineering, Beihang University, 100083 Beijing, China
合作状况	国内
中文摘要	Flying and marine animals often use flapping wings or tails to generate thrust. In this paper, we will use the simplest flapping model with a sinusoidal pitching motion over a range of frequency and amplitude to investigate the mechanism of thrust generation. Previous work focuses on the Karman vortex street and the reversed Karman vortex street but the transition between two states remains unknown. The present numerical simulation provides a complete scenario of flow patterns from the Karman vortex street to reversed Karman vortex street via aligned vortices and the ultimate state is the deflected Karman vortex street, as the parameters of flapping motions change. The results are in agreement with the previous experiment. We make further discussion on the relationship of the observed states with drag and thrust coefficients and explore the mechanism of enhanced thrust generation using flapping motions.
学科主题	水动力学
分类号	二类
收录类别	SCI ; EI ; CSCD
资助信息	The project was supported by the Natural Science Foundation of Jiangxi Province (2010GZC0162).
原文出处	http://dx.doi.org/10.1007/s10409-012-0158-8
语种	英语
WOS记录号	WOS:000313061200007
公开日期	2013-01-31
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46789]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Zhang X(张星)
推荐引用方式 GB/T 7714	He GY,Wang Q,Zhang X,et al. Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil[J]. Acta Mechanica Sinica,2012,28(6):1551-1556.
APA	He GY,Wang Q,Zhang X,Zhang SG,&张星.(2012).Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil.Acta Mechanica Sinica,28(6),1551-1556.
MLA	He GY,et al."Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil".Acta Mechanica Sinica 28.6(2012):1551-1556.