Lattice Boltzmann simulations of a pitch-up and pitch-down maneuver of a chord-wise flexible wing in a free stream flow
文献类型：期刊论文
| 作者 | Qi, Dewei1; He, Guowei2 ; Liu, Yingming3; He GW(何国威)
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 26期号:2页码:21902 |
| 通讯作者邮箱 | dewei.qi@wmich.edu |
| 关键词 | Three-point velocity correlation Turbulence Large Eddy Simulation Velocity increment Multiscale analysis |
| ISSN号 | 1070-6631 |
| 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 |
| 通讯作者 | Qi, DW (reprint author), Western Michigan Univ, Dept Chem & Paper Engn, Kalamazoo, MI 49008 USA. |
| 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 |
| 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,et al. 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,&He GW.(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. |
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来源：力学研究所
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