| Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil | |
Zhi,Yuchang; Zhan,Jiemin; Huang RF(黄仁芳); Qiu RD(丘润荻); Wang YW(王一伟)
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| Corresponding Author | Huang, Renfang() ; Wang, Yiwei([email protected]) |
| Source Publication | OCEAN ENGINEERING
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| 2022 | |
| Volume | 243Pages:12 |
| ISSN | 0029-8018 |
| Abstract | This paper investigates the ventilation elimination mechanisms during the deceleration process of a surfacepiercing hydrofoil using the unsteady Reynolds-averaged Navier-Stokes (RANS) method together with a Volume of Fluid (VOF) model. The numerical results are in good agreement with the experimental data. The ventilation elimination mechanism of the surface-piercing hydrofoil is analyzed from the perspectives of the hydrofoil hydrodynamic performance, the ventilated cavity evolution, vortex structures, and re-entrant jets. The results indicate that the ventilation elimination includes three stages, i.e. a decrease in the ventilated cavity, washout, and reattachment. The decrease in the ventilated cavity is due to the hydrofoil speed decrease in the FV flow. Washout is the transition from fully ventilated to partially ventilated flow, and reattachment is the transition from partially ventilated to fully wetted flow. The underwater vortex structures around the surfacepiercing hydrofoil are composed of a tip vortex, an unstable vortex induced by the shear layer, and a Karman vortex caused by the vortex shedding from the trailing edge of the hydrofoil. Ventilation stability strongly depends on the re-entrant jet. When Phi (the angle between the flow direction and the closure line of the ventilated cavity) is greater than 45 degrees, the re-entrant jet impinges on the ventilated cavity's leading edge and destabilizes the ventilated cavity. |
| Keyword | Surface-piercing hydrofoil Ventilation elimination Re-entrant jet RANS |
| DOI | 10.1016/j.oceaneng.2021.110225 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000744765100001 |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| Funding Project | National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[11772340] ; Youth Innovation Promotion Association CAS[Y201906] |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Huang, Renfang ; Wang, Yiwei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88394 |
| Collection | 流固耦合系统力学重点实验室 |
| Recommended Citation GB/T 7714 | Zhi,Yuchang,Zhan,Jiemin,Huang RF,et al. Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil[J]. OCEAN ENGINEERING,2022,243:12.Rp_Au:Huang, Renfang, Wang, Yiwei |
| APA | Zhi,Yuchang,Zhan,Jiemin,黄仁芳,丘润荻,&王一伟.(2022).Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil.OCEAN ENGINEERING,243,12. |
| MLA | Zhi,Yuchang,et al."Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil".OCEAN ENGINEERING 243(2022):12. |
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| Jp2022FA580_2022_Num（12054KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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