| Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil | |
Zhi, Yuchang1; Huang RF(黄仁芳)2; Qiu RD(丘润荻)2,3; Wang YW(王一伟)2,3,4 ; Sun, Qun; Cai ST(蔡淑婷)2,4
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| Corresponding Author | Huang, Renfang([email protected]) |
| Source Publication | PHYSICS OF FLUIDS
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| 2023-12-01 | |
| Volume | 35Issue:12Pages:16 |
| ISSN | 1070-6631 |
| Abstract | Recent experiments have demonstrated that tip vortices can trigger the ventilation formation around a surface-piercing hydrofoil. However, the influence of this ventilation on transient flow structures and vortex evolution remains unresolved. This paper numerically investigates the tip-vortex-induced ventilation formation for a surface-piercing hydrofoil at a stalled yaw angle. The predicted unsteady ventilated cavities with tip vortices and pressure-side spray are in reasonable agreement with experimental observations. The ventilation formation process can be divided into three stages: base ventilation, tip-vortex ventilation, and suction-side ventilation. It is indicated that ventilation has a greater impact on the lift coefficient than the drag coefficient. The lift coefficient increases during the base ventilation and tip-vortex ventilation stages due to the expansion of the low-pressure stalled flow, but decreases in the suction-side ventilation stage because of the gradual replacement of this low-pressure region by an aerated cavity. Tip-leakage and tip-separation vortices initially exist independently at the hydrofoil tip, then expand and merge through air ventilation, ultimately forming a strongly stable tip vortex. Furthermore, ventilation promotes vortex generation, with the major contributors being the vortex stretching and baroclinic torque terms. |
| DOI | 10.1063/5.0177292 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001126207100007 |
| WOS Keyword | LARGE-EDDY SIMULATION ; CAVITATING FLOW ; ELIMINATION ; INSIGHT |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[U22B6010] ; international partnership program of Chinese Academy of Sciences[025GJHZ2022118FN] |
| Funding Organization | National Natural Science Foundation of China ; international partnership program of Chinese Academy of Sciences |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Huang, Renfang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94671 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Liaocheng Univ, Sch Mech & Automot Engn, Liaocheng 252000, Peoples R China; 2.Inst Mech, Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Zhi, Yuchang,Huang RF,Qiu RD,et al. Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil[J]. PHYSICS OF FLUIDS,2023,35,12,:16.Rp_Au:Huang, Renfang |
| APA | Zhi, Yuchang,黄仁芳,丘润荻,王一伟,Sun, Qun,&蔡淑婷.(2023).Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil.PHYSICS OF FLUIDS,35(12),16. |
| MLA | Zhi, Yuchang,et al."Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil".PHYSICS OF FLUIDS 35.12(2023):16. |
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| Jp2023A351.pdf（11386KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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