Effects of geometric shape on the hydrodynamics of a self-propelled flapping foil
文献类型：期刊论文
| 作者 | Zhang X(张星); Ni SZ(倪赛珍); Wang SZ(王士召); He GW(何国威); Zhang X(张星) ; Zhang X(张星); He GW(何国威); Wang SZ(王士召)
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| 刊名 | Physics of Fluids
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| 出版日期 | 2009 |
| 卷号 | 21期号:10页码:103302 |
| 通讯作者邮箱 | hgw@lnm.imech.ac.cn |
| ISSN号 | 1070-6631 |
| 通讯作者 | 何国威 |
| 合作状况 | 国内 |
| 中文摘要 | The hydrodynamics of a free flapping foil is studied numerically. The foil undergoes a forced vertical oscillation and is free to move horizontally. The effect of chord-thickness ratio is investigated by varying this parameter while fixing other ones such as the Reynolds number, the density ratio, and the flapping amplitude. Three different flow regimes have been identified when we increase the chord-thickness ratio, i.e., left-right symmetry, back-and-forth chaotic motion, and unidirectional motion with staggered vortex street. It is observed that the chord-thickness ratio can affect the symmetry-breaking bifurcation, the arrangement of vortices in the wake, and the terminal velocity of the foil. The similarity in the symmetry-breaking bifurcation of the present problem to that of a flapping body under constraint is discussed. A comparison between the dynamic behaviors of an elliptic foil and a rectangular foil at various chord-thickness ratios is also presented. |
| 学科主题 | 流体力学 |
| 类目[WOS] | Mechanics ; Physics, Fluids & Plasmas |
| 研究领域[WOS] | Mechanics ; Physics |
| 关键词[WOS] | PRESSURE-CORRECTION METHOD ; THRUST GENERATION ; AIRFOIL ; BODY ; FLOW ; SIMULATIONS ; WAKE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000271358900018 |
| 公开日期 | 2009-12-24 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/28756]  |
| 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(何国威) |
| 推荐引用方式 GB/T 7714 | Zhang X,Ni SZ,Wang SZ,et al. Effects of geometric shape on the hydrodynamics of a self-propelled flapping foil[J]. Physics of Fluids,2009,21(10):103302. |
| APA | 张星.,倪赛珍.,王士召.,何国威.,Zhang X.,...&Wang SZ.(2009).Effects of geometric shape on the hydrodynamics of a self-propelled flapping foil.Physics of Fluids,21(10),103302. |
| MLA | 张星,et al."Effects of geometric shape on the hydrodynamics of a self-propelled flapping foil".Physics of Fluids 21.10(2009):103302. |
入库方式： OAI收割
来源：力学研究所
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