| Wake of a bio-inspired flapping wing with morphing wingspan | |
He XY(何心怡); Liu Y(刘毅); Chen YX(陈一鑫); Wang SZ(王士召)
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| Source Publication | ACTA MECHANICA SINICA
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| 2023-10 | |
| Volume | 39Issue:10Pages:323061 |
| ISSN | 0567-7718 |
| Abstract | This work uses a bio-inspired flapping wing model to numerically investigate the effect of morphing wingspan on wake structures. The model consists of a rectangular flat-plate wing heaving harmonically in a uniform incoming flow at the Reynolds number of 300 and Strouhal number of 0.3. The wingspan changes during heaving, with a maximum wingspan at the middle of downstroke and minimum wingspan at the middle of upstroke. The wake is characterized by two oblique chains of interconnected vortex loops. Although the morphing wingspan has little effect on the wake topology, it significantly affects the magnitude and size of the vortices near the wing surface, which leads to an asymmetric distribution of vortex loop chains in the wake. The shrinking of leading-edge vortex under the lower surface of the wing in downstroke and the destructive interaction of tip vortices in upstroke are identified as the two vortex dynamics corresponding to the asymmetric wake structures. The analysis on the lift coefficients shows that the above vortex interactions are mainly caused by the change of span length instead of spanwise velocity. |
| Keyword | Morphing wingspan Wake structures Flapping wing Leading-edge vortex Tip votices |
| DOI | 10.1007/s10409-023-23061-x |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:001018348800001 |
| WOS Research Area | Engineering, Mechanical ; Mechanics |
| Funding Organization | Basic Science Center Program of the National Natural Science Foundation of China [11988102] ; National Natural Science Foundation of China [12102439, 92252203, 91952301] ; China Postdoctoral Science Foundation [2021M703290] |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Wang, SZ (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. ; Wang, SZ (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92407 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.{He Xinyi, Liu Yi, Chen Yixin, Wang Shizhao} Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China 2.{Chen Yixin, Wang Shizhao} Univ Chinese Acad Sci Sch Engn Sci Beijing 101408 Peoples R China |
| Recommended Citation GB/T 7714 | He XY,Liu Y,Chen YX,et al. Wake of a bio-inspired flapping wing with morphing wingspan[J]. ACTA MECHANICA SINICA,2023,39,10,:323061.Rp_Au:Wang, SZ (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China., Wang, SZ (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China. |
| APA | 何心怡,刘毅,陈一鑫,&王士召.(2023).Wake of a bio-inspired flapping wing with morphing wingspan.ACTA MECHANICA SINICA,39(10),323061. |
| MLA | 何心怡,et al."Wake of a bio-inspired flapping wing with morphing wingspan".ACTA MECHANICA SINICA 39.10(2023):323061. |
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| Jp2023A160.pdf（7297KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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