Lattice Boltzmann simulations of a pitch-up and pitch-down maneuver of a chord-wise flexible wing in a free stream flow

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	Lattice Boltzmann simulations of a pitch-up and pitch-down maneuver of a chord-wise flexible wing in a free stream flow
	Qi, Dewei 1; He, Guowei2 ; Liu, Yingming 3
刊名	PHYSICS OF FLUIDS
	2014-02-01
通讯作者邮箱	dewei.qi@wmich.edu
卷号	26 期号:2 页码:21902
关键词	Three-point velocity correlation Turbulence Large Eddy Simulation Velocity increment Multiscale analysis
ISSN号	1070-6631
通讯作者	Qi, DW (reprint author), Western Michigan Univ, Dept Chem & Paper Engn, Kalamazoo, MI 49008 USA.
产权排序	[Qi, Dewei] Western Michigan Univ, Dept Chem & Paper Engn, Kalamazoo, MI 49008 USA; [He, Guowei] Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China; [Liu, Yingming] Sichuan Univ, Yangtze Ctr Math, Chengdu 610064, Peoples R China
合作状况	国际
中文摘要	A rapid pitch-up and pitch-down maneuver of a chord-wise flexible wing in a steady free stream is studied by using a lattice Boltzmann flexible particle method in a three-dimensional space at a chord based Reynolds number of 100. The pitching rates, flexibility, and wing density are systematically varied, and their effects on aerodynamic forces are investigated. It is demonstrated that the flexibility can be utilized to significantly improve lift forces. The flexible wing has a larger angular momentum due to elasticity and inertia and generates a larger leading edge vortex as compared with a rigid wing. Such lift enhancement occurs mainly during the pitch-down motion while a large stall angle is produced during the pitch-up motion. At a low pitch rate, the flexibility cannot improve lift. (C) 2014 AIP Publishing LLC.
英文摘要	A rapid pitch-up and pitch-down maneuver of a chord-wise flexible wing in a steady free stream is studied by using a lattice Boltzmann flexible particle method in a three-dimensional space at a chord based Reynolds number of 100. The pitching rates, flexibility, and wing density are systematically varied, and their effects on aerodynamic forces are investigated. It is demonstrated that the flexibility can be utilized to significantly improve lift forces. The flexible wing has a larger angular momentum due to elasticity and inertia and generates a larger leading edge vortex as compared with a rigid wing. Such lift enhancement occurs mainly during the pitch-down motion while a large stall angle is produced during the pitch-up motion. At a low pitch rate, the flexibility cannot improve lift. (C) 2014 AIP Publishing LLC.
学科主题	Mechanics; Physics
分类号	一类/力学重要期刊
类目[WOS]	Mechanics ; Physics, Fluids & Plasmas
研究领域[WOS]	Mechanics ; Physics
关键词[WOS]	INSECT FLIGHT
收录类别	SCI
资助信息	Dr. Qi acknowledges the support from the National Science Foundation (NSF) under Award No. 1126438; Dr. He would like to thank the financial supports from the National Natural Science Foundation of China (NNSFC) under Award No. 11232011 (Key project) and the National Basic Research Program of China (973 Program) under Award No. 2013CB834100.
原文出处	http://dx.doi.org/10.1063/1.4866182
语种	英语
WOS记录号	WOS:000332322000004
公开日期	2014-05-09
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/48781]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Western Michigan Univ, Dept Chem & Paper Engn, Kalamazoo, MI 49008 USA 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China 3.Sichuan Univ, Yangtze Ctr Math, Chengdu 610064, Peoples R China
推荐引用方式 GB/T 7714	Qi, Dewei,He, Guowei,Liu, Yingming. Lattice Boltzmann simulations of a pitch-up and pitch-down maneuver of a chord-wise flexible wing in a free stream flow[J]. PHYSICS OF FLUIDS,2014,26(2):21902.
APA	Qi, Dewei,He, Guowei,&Liu, Yingming.(2014).Lattice Boltzmann simulations of a pitch-up and pitch-down maneuver of a chord-wise flexible wing in a free stream flow.PHYSICS OF FLUIDS,26(2),21902.
MLA	Qi, Dewei,et al."Lattice Boltzmann simulations of a pitch-up and pitch-down maneuver of a chord-wise flexible wing in a free stream flow".PHYSICS OF FLUIDS 26.2(2014):21902.