| Experimental study on the mechanism of cavitation-induced ventilation | |
Wang YJ(王永九); Huang RF(黄仁芳); Qiu RD(丘润荻); Wang YW(王一伟) ; Du TZ(杜特专)
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| Corresponding Author | Du, Tezhuan(dutezhuan@imech.ac.cn) |
| Source Publication | INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
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| 2024 | |
| Volume | 170Pages:11 |
| ISSN | 0301-9322 |
| Abstract | In this study, the cavitating flow and cavitation-induced ventilation flow around a surface-piercing hydrofoil were investigated to gain in-depth understanding of the interaction mechanism between the vaporous cavity and free surface at low cavitation numbers. Experiments were conducted in a constrained-launching water tank to visualize the cavity using a high-speed camera. Unsteady cloud cavitation and cavitation-induced ventilation at atmospheric pressure were observed and analyzed while piercing the free surface. The flow regime map was summarized at a fixed aspect ratio of AR(h) = 1.5. Subsequently, a physical model was proposed to predict the maximum depression depth of the water surface (H) at the trailing edge of the hydrofoil. Both the physical model and experimental results reveal that the non-dimensional depth H/c has a linear relation to Fn2 c x Re-c x sin(2)alpha. Finally, a criterion for cavitation-induced ventilation based on the improved lifting-line theory and a physical model were proposed. A new relation H/L-c similar to alpha(0.5) was obtained, where L-c is the maximum cavity length. The results of this study can guide the design and application of hydrofoils for ventilation and cavitation processes. |
| Keyword | Free surface Surface piercing Cavitation Ventilation Multiphase flow |
| DOI | 10.1016/j.ijmultiphaseflow.2023.104633 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001101177200001 |
| WOS Keyword | LARGE-EDDY SIMULATION ; PARTIAL CAVITY FLOWS ; HYDROFOIL ; INCEPTION ; WAVES ; SHEET |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Project | National Key R&D Program of China[2022YFB3303500] ; National Key R&D Program of China[2022YFB3303502] ; National Natural Science Foundation of China[11872065] ; National Natural Science Foundation of China[12122214] ; National Natural Science Foundation of China[52006232] |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Du, Tezhuan |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/93555 |
| Collection | 流固耦合系统力学重点实验室 |
| Recommended Citation GB/T 7714 | Wang YJ,Huang RF,Qiu RD,et al. Experimental study on the mechanism of cavitation-induced ventilation[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2024,170:11. |
| APA | 王永九,黄仁芳,丘润荻,王一伟,&杜特专.(2024).Experimental study on the mechanism of cavitation-induced ventilation.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,170,11. |
| MLA | 王永九,et al."Experimental study on the mechanism of cavitation-induced ventilation".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 170(2024):11. |
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