Gap vortices compensate for the lifting-surface loss of a moult-gapped flapping wing
文献类型：期刊论文
| 作者 | Wang, Chunyu1,2; Xu, Zhaoyue1,2; Wang, Shizhao1,2; He, Guowei1,2 |
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2025-09-18 |
| 卷号 | 1019页码:37 |
| 关键词 | swimming/flying |
| ISSN号 | 0022-1120 |
| DOI | 10.1017/jfm.2025.10557 |
| 通讯作者 | Wang, Shizhao(wangsz@lnm.imech.ac.cn) |
| 英文摘要 | The moulting of birds creates different trailing-edge gaps in their wings, which inspires the handling of damaged wings in micro-air vehicles. The effects of the moult gap on aerodynamic performance are investigated by employing a bird-inspired flapping wing model. The aerodynamic performance is evaluated by numerically solving the Navier-Stokes equations for incompressible flows. Moult-gapped wings with different gap widths and positions are compared with the original intact wing in terms of aerodynamic forces and vortex structures. It is found that the decrease in the average lift is slower than that expected from the classical aerodynamic model. The moult gap results in three-dimensional gap vortices, which interact with leading-edge vortices and tip vortices. The interaction generates a pair of parallelly arranged vortex loops on each wing. The downwash momentum associated with this pair of vortex loops is enhanced by the gap vortices. The gap-vortices-enhanced downwash compensates for the loss in the lifting surface, increasing the aerodynamic force per unit area. A composite actuator disk model is proposed based on the vortex loops. The proposed model accounts for not only the finite-span wing effects but also the vortex compensation effects, while the previous quasi-steady model only accounts for the finite-span wing effects. |
| WOS关键词 | LEADING-EDGE VORTEX ; HARRIS HAWK ; FLIGHT ; AERODYNAMICS ; WAKE ; KINEMATICS ; FIELD ; BODY ; PERFORMANCE ; REDUCTION |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11988102] ; National Natural Science Foundation of China (NSFC)[92252203] ; National Natural Science Foundation of China (NSFC)[12102439] ; National Natural Science Foundation of China (NSFC)[12425207] ; Chinese Academy of Sciences Project for Young Scientists in Basic Research[YSBR-087] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620102] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001573589200001 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences Project for Young Scientists in Basic Research ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/104038]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wang, Shizhao |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Chunyu,Xu, Zhaoyue,Wang, Shizhao,et al. Gap vortices compensate for the lifting-surface loss of a moult-gapped flapping wing[J]. JOURNAL OF FLUID MECHANICS,2025,1019:37. |
| APA | Wang, Chunyu,Xu, Zhaoyue,Wang, Shizhao,&He, Guowei.(2025).Gap vortices compensate for the lifting-surface loss of a moult-gapped flapping wing.JOURNAL OF FLUID MECHANICS,1019,37. |
| MLA | Wang, Chunyu,et al."Gap vortices compensate for the lifting-surface loss of a moult-gapped flapping wing".JOURNAL OF FLUID MECHANICS 1019(2025):37. |
入库方式： OAI收割
来源：力学研究所
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