On the airflow in a cavity during water entry
文献类型：期刊论文
| 作者 | Wang, Yufei3,4 ; Wang, Zhiying4; Du, Yan3,4; Wang, Jingzhu3,4; Wang, Yiwei2,3,4; Huang, Chenguang1; Huang CG(黄晨光); Wang YW(王一伟); Wang YF(王宇飞); Du Y(杜岩)
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| 刊名 | INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 151页码:11 |
| ISSN号 | 0301-9322 |
| 关键词 | Water entry Airflow field in the cavity |
| DOI | 10.1016/j.ijmultiphaseflow.2022.104073 |
| 通讯作者 | Wang, Zhiying(wangzhiying@imech.ac.cn) ; Wang, Yiwei(wangyw@imech.ac.cn) |
| 英文摘要 | The airflow physics in the cavity during the entry of a symmetric wedge into water are investigated experimentally using flow visualization techniques and particle image velocimetry (PIV) measurements. The spatial and temporal evolutions of the airflow velocity in the cavity are presented. Smoke visualization indicates some small-scale flow phenomena like secondary vortexes, free shear layers, and Kelvin-Helmholtz (K-H) instabilities within the water entry cavity. The information of airflow velocity in the cavity is obtained via PIV measurements. The results show that ambient gas is entrained into the transient air bubble at the wake of the wedge and the air flow rate is nearly equal to the cavity volume change rate. Thus, it is feasible to use the airflow rate to predict the cavity volume change rate. When the wedge descends, the air-water interface has a significant effect on the wake vortex behaviors. The vortex areas shrink gradually and wake vortex circulation decreases over time. Thus, the air-water interface not only suppresses vortex growth but also leads to vortex dissipation. |
| WOS关键词 | DYNAMICS ; SURFACE ; BREAKUP |
| 资助项目 | 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] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000788074200001 |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promo-tion Association CAS |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89039]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Wang, Zhiying; Wang, Yiwei |
| 作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yufei,Wang, Zhiying,Du, Yan,et al. On the airflow in a cavity during water entry[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2022,151:11. |
| APA | Wang, Yufei.,Wang, Zhiying.,Du, Yan.,Wang, Jingzhu.,Wang, Yiwei.,...&杜岩.(2022).On the airflow in a cavity during water entry.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,151,11. |
| MLA | Wang, Yufei,et al."On the airflow in a cavity during water entry".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 151(2022):11. |
入库方式： OAI收割
来源：力学研究所
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