| Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow | |
Huang RF(黄仁芳)1,2; Shao SY2; Arndt REA2; Luo XW3; Wang YW(王一伟)1 ; Hong JR2,4
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| Source Publication | JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
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| 2020-06-01 | |
| Volume | 142Issue:6Pages:15 |
| ISSN | 0098-2202 |
| Abstract | We conducted a numerical simulation of ventilated supercavitation from a forward-facing cavitator in unsteady flows generated by a gust generator under different gust angles of attack and gust frequencies. The numerical method is validated through the experimental results under specific steady and unsteady conditions. It is shown that the simulation can capture the degree of cavity shape fluctuation and internal pressure variation in a gust cycle. Specifically, the cavity centerline shows periodic wavelike undulation with a maximum amplitude matching that of the incoming flow perturbation. The cavity internal pressure also fluctuates periodically, causing the corresponding change of difference between internal and external pressure across the closure that leads to the closure mode change in a gust cycle. In addition, the simulation captures the variation of cavity internal flow, particularly the development internal flow boundary layer along the cavitator mounting strut, upon the incoming flow perturbation, correlating with cavity deformation and closure mode variation. With increasing angle of attack, the cavity exhibits augmented wavelike undulation and pressure fluctuation. As the wavelength of the flow perturbation approaches the cavity length with increasing gust frequency, the cavity experiences stronger wavelike undulation and internal pressure fluctuation but reduced cavitation number variation. |
| DOI | 10.1115/1.4046110 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000530279100010 |
| WOS Keyword | CAVITATING FLOW ; CLOSURE |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Mechanical |
| Funding Organization | China Scholarship Council ; National Key R&D Program of China[2017YFC1404200] ; Office of Naval Research[N000141612755] ; University of Minnesota |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Hong, Jiarong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/84771 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Minnesota, St Anthony Falls Lab, Minneapolis, MN 55414 USA; 3.Tsinghua Univ, Dept Energy & Power Engn, Beijing 100084, Peoples R China; 4.Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55414 USA |
| Recommended Citation GB/T 7714 | Huang RF,Shao SY,Arndt REA,et al. Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,2020,142,6,:15.Rp_Au:Hong, Jiarong |
| APA | 黄仁芳,Shao SY,Arndt REA,Luo XW,王一伟,&Hong JR.(2020).Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow.JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,142(6),15. |
| MLA | 黄仁芳,et al."Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow".JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 142.6(2020):15. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2020215.pdf（4489KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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