| Study on the cavity dynamics of water entry for horizontal objects with different geometrical shapes | |
Du Y(杜岩)1,2 ; Wang ZY(王志英)1; Wang YW(王一伟)1,2,3; Wang JZ(王静竹)1; Qiu RD(丘润荻)1,2,3; Huang CG(黄晨光)4
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| Corresponding Author | Wang, Zhiying([email protected]) |
| Source Publication | OCEAN ENGINEERING
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| 2022-05-15 | |
| Volume | 252Pages:12 |
| ISSN | 0029-8018 |
| Abstract | The influence of geometrical shapes on cavity evolution, flow fields and vortex structures evolution during water entry processes are investigated by experimental and numerical methods in this paper. The cavity evolution for water entry of four horizontal objects with different geometrical shapes are captured by high-speed photography. The experimental results indicate that although the geometrical shape has influence on cavity shape and size, the pinch-off depths are very close for the open cavity cases. In the numerical study, a compressible two-phase flow solver combing with large eddy simulation (LES) and dynamic overset mesh based on OpenFOAM (R) platform is adopted to observe the cavity dynamics, flow fields and vortex structures information. Numerical results reveal that the cavity produced by the object with trapezoid section expand at a relatively higher speed in the radial direction to form a larger cavity due to the more kinetic energy transference to the fluid. The vorticity evolution shows that for the object with circle section, the vortex structures alternately shed at the cavity tail shortly after the cavity separates from the free surface. However, for the object with trapezoid section, the cavity is squashed distorted due to the hydrostatic pressure without alternating vortex shedding. |
| Keyword | Water entry Cavity dynamics Pinch-off depth Vortex evolution |
| DOI | 10.1016/j.oceaneng.2022.111242 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000806780000004 |
| WOS Keyword | IMPACT |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| Funding Project | National Natural Science Foundation of China[12122214] ; National Natural Science Foundation of China[11902323] ; Youth Innovation Promo-tion Association CAS[Y201906] ; Youth Innovation Promo-tion Association CAS[2022019] |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promo-tion Association CAS |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Wang, Zhiying |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89634 |
| 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 Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China |
| Recommended Citation GB/T 7714 | Du Y,Wang ZY,Wang YW,et al. Study on the cavity dynamics of water entry for horizontal objects with different geometrical shapes[J]. OCEAN ENGINEERING,2022,252:12.Rp_Au:Wang, Zhiying |
| APA | 杜岩,王志英,王一伟,王静竹,丘润荻,&黄晨光.(2022).Study on the cavity dynamics of water entry for horizontal objects with different geometrical shapes.OCEAN ENGINEERING,252,12. |
| MLA | 杜岩,et al."Study on the cavity dynamics of water entry for horizontal objects with different geometrical shapes".OCEAN ENGINEERING 252(2022):12. |
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| Jp2022FA369.pdf（10796KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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