Hydrodynamics of morphology for thunniform swimmers: Effects of the posterior body shape
文献类型：期刊论文
| 作者 | Huang S(黄顺); Guo DL(郭迪龙) ; Wang YW(王一伟); Yang GW(杨国伟); Yin B(银波)
|
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2023-03-15 |
| 卷号 | 272页码:113866 |
| ISSN号 | 0029-8018 |
| 关键词 | Morphology Posterior body of tuna Biological fluid dynamics Immersed boundary method Fluid structure interaction |
| DOI | 10.1016/j.oceaneng.2023.113866 |
| 英文摘要 | Morphology of posterior body for thunniform swimmers plays an important role in determining the propulsion performance. Recent literature mainly focused on the effects of thunniform swimmers specialized features, e.g., finlets, crescent caudal fin, etc. However, it is unknown to what extent posterior body morphological change is optimized for hydrodynamic performance. In this paper, by varying the height and width of posterior body, numerical simulations of thunniform swimming at cruising state have been carried out. To account for the influence of fluid structure interaction on the hydrodynamic performance, a sharp interface immersed boundary method (IBM) is utilized to solve the incompressible viscous flow. As the width or height increases, stronger PBVs (posterior body vortices) are generated alongside the posterior body. Then the constructive interaction between PBVs and LEVs (vortex generated on the leading edge of caudal fin) could enhance the caudal fin thrust significantly. This thrust enhancement mechanism is more evident with increasing height of the posterior body. The pressure difference between two sides of posterior body resulting from PBVs helps diminish the trunk drag, which is more evident as width is decreased. Subsequently, a systematic study of the Reynolds number (Re) and Strouhal number (St) effects has been conducted to quantify and evaluate the hydrodynamic performance with various posterior body shapes. Our work can help understand tuna fish propulsion mechanism due to posterior body morphology, based on which engineered bionic swimmers can reach excellent swimming performance by optimizing the trunk shape. |
| 分类号 | 一类 |
| WOS研究方向 | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000942153400001 |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences [XDA22040203] |
| 其他责任者 | Yin, B (corresponding author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91815]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang S,Guo DL,Wang YW,et al. Hydrodynamics of morphology for thunniform swimmers: Effects of the posterior body shape[J]. OCEAN ENGINEERING,2023,272:113866. |
| APA | 黄顺,郭迪龙,王一伟,杨国伟,&银波.(2023).Hydrodynamics of morphology for thunniform swimmers: Effects of the posterior body shape.OCEAN ENGINEERING,272,113866. |
| MLA | 黄顺,et al."Hydrodynamics of morphology for thunniform swimmers: Effects of the posterior body shape".OCEAN ENGINEERING 272(2023):113866. |
入库方式： OAI收割
来源：力学研究所
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