Self-propulsion of a Flexible Plunging Foil Near a Solid Wall

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	Self-propulsion of a Flexible Plunging Foil Near a Solid Wall
	Dai LZ; He GW(何国威); Zhang X(张星)
	2015
会议名称	7th International Conference on Fluid Mechanics, ICFM 2015
会议日期	May 24, 2015 - May 27, 2015
会议地点	Qingdao, China
关键词	Immersed boundary methods Numerical investigations plunging Propulsive efficiencies Self propulsion Systematic study Wake structures Wall effects
通讯作者	Dai, Longzhen (dailongzhen@imech.ac.cn)
中文摘要	This paper is a numerical investigation of wall effect on the self-propulsion of a flexible plunging foil. Simulations are performed by a Fluid-Structure Interaction (FSI) solver which couples immersed boundary method for the fluid and finite difference method for the structure. A systematic study is conducted by varying the distance between the foil and the wall. It is found that the time-Averaged lift force first pulls the foil towards the wall and then pushes foil away from the wall as the distance decreases. The cruising speed increases when the foil approaches the wall, while the propulsive efficiency decreases a little and then increases rapidly as the distance becomes less than one chord length of the foil. It is observed that wake structure deflects obviously in the near-foil regions, but becomes parallel to the horizontal direction again in the far field downstream. © 2015 The Authors.
收录类别	EI
会议网址	10.1016/j.proeng.2015.11.262
会议录	Procedia Engineering
语种	英语
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/60159]
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	Dai LZ,He GW,Zhang X. Self-propulsion of a Flexible Plunging Foil Near a Solid Wall[C]. 见:7th International Conference on Fluid Mechanics, ICFM 2015. Qingdao, China. May 24, 2015 - May 27, 2015.10.1016/j.proeng.2015.11.262.