Lift enhancement by dynamically changing wingspan in forward flapping flight
文献类型：期刊论文
| 作者 | Wang SZ(王士召) ; Zhang X(张星); He GW(何国威); He, GW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
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| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2014-06 |
| 卷号 | 26期号:6页码:61903 |
| 关键词 | Immersed Boundary Method Leading-edge Vortices Insect Flight Aerodynamic Performance Unsteady Aerodynamics Wake Structure Free Vortex Bat Flight Kinematics Flow |
| ISSN号 | 1070-6631 |
| 产权排序 | [Wang, Shizhao; Zhang, Xing; He, Guowei] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Liu, Tianshu] Western Michigan Univ, Dept Mech & Aerosp Engn, Kalamazoo, MI 49008 USA |
| 英文摘要 | Dynamically stretching and retracting wingspan has been widely observed in the flight of birds and bats, and its effects on the aerodynamic performance particularly lift generation are intriguing. The rectangular flat-plate flapping wing with a sinusoidally stretching and retracting wingspan is proposed as a simple model for biologically inspired dynamic morphing wings. Numerical simulations of the low-Reynolds-number flows around the flapping morphing wing are conducted in a parametric space by using the immersed boundary method. It is found that the instantaneous and time-averaged lift coefficients of the wing can be significantly enhanced by dynamically changing wingspan in a flapping cycle. The lift enhancement is caused by both changing the lifting surface area and manipulating the flow structures responsible to the vortex lift generation. The physical mechanisms behind the lift enhancement are explored by examining the three-dimensional flow structures around the flapping wing. (C) 2014 AIP Publishing LLC. |
| 学科主题 | Mechanics ; Physics |
| 分类号 | 一类/力学重要期刊 |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000341175200005 |
| 资助机构 | This work was supported by the National Natural Science Foundation of China under Project Nos. 10872201, 11232011, 11302238, and 11372331, and the National Basic Research Program of China under Project No. 2013CB834100 (Nonlinear science). Tianshu Liu would like to acknowledge the hospitality received at LNM during his visit, where he accomplished this work. The simulations were performed on TianHe-1. The authors would like to acknowledge the support from National Supercomputer Center in Tianjin. In addition, we would like to thank the reviewer for his/her constructive and meticulous comments. |
| 公开日期 | 2014-11-03 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49143]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | He, GW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang SZ,Zhang X,He GW,et al. Lift enhancement by dynamically changing wingspan in forward flapping flight[J]. PHYSICS OF FLUIDS,2014,26(6):61903. |
| APA | Wang SZ,Zhang X,He GW,&He, GW .(2014).Lift enhancement by dynamically changing wingspan in forward flapping flight.PHYSICS OF FLUIDS,26(6),61903. |
| MLA | Wang SZ,et al."Lift enhancement by dynamically changing wingspan in forward flapping flight".PHYSICS OF FLUIDS 26.6(2014):61903. |
入库方式： OAI收割
来源：力学研究所
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