Splashing and sealing of an ejecta sheet induced by a cavitation bubble close to a water surface

doi:10.1063/5.0205502

IMECH-IR > 流固耦合系统力学重点实验室

	Splashing and sealing of an ejecta sheet induced by a cavitation bubble close to a water surface
	Wang JZ(王静竹)1,2; Wang GH(王广航)1,3; Wang YW(王一伟)1,2,3
通讯作者	Wang, Yiwei([email protected])
发表期刊	PHYSICS OF FLUIDS
	2024-04-01
卷号	36 期号:4 页码:12
ISSN	1070-6631
摘要	An ejecta sheet is commonly formed when a cavitation bubble bursts into the air, creating an open cavity. The evolution of the sheet has been studied independently, with limited focus on the interaction between the ejecta sheet and the cavity. This study offers insights into the splashing and sealing of a laser-induced ejecta sheet. An object-distance compensation method is developed to capture clear images of the phenomena both above and below the water surface simultaneously. The ejecta sheet exhibits two patterns: an open splash and a sealed splash. In the case of an open splash, the cavity seals quasistatically, whereas in the case of a sealed splash, the cavity type transitions from shallow sealing to surface sealing as the dimensionless standoff distance gamma increases. An axisymmetric model is proposed for analyzing how the ejecta sheet evolves during the sealing process. Since the sealing process is dominated by suction pressure resulting from rapid expansion of the cavity, we obtain the cross-sectional area A(s) of the ejecta sheet as a function of the rates of change of the bubble volume (V(over dot)(b)) and the sheet cross-sectional area ( A(over dot)(inn)), and this function is shown to be independent of time. Remarkably, as gamma increases, A(s) decreases and increases in the regimes of shallow sealing and surface sealing, respectively. This tendency is induced by the significant difference in V(over dot)(b) due to the initial state of the cavity. Our findings offer a new understanding of the dynamics of laser-induced ejecta sheets. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)
DOI	10.1063/5.0205502
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001202924300007
关键词[WOS]	SINGLE DROP ; IMPACT ; ENTRY ; JET
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National Natural Science Foundation of China10.13039/501100001809[12202291] ; National Natural Science Foundation of China10.13039/501100001809[12272382] ; National Natural Science Foundation of China[2022019] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
项目资助者	National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Wang, Yiwei
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/95050
专题	流固耦合系统力学重点实验室
作者单位	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
推荐引用方式 GB/T 7714	Wang JZ,Wang GH,Wang YW. Splashing and sealing of an ejecta sheet induced by a cavitation bubble close to a water surface[J]. PHYSICS OF FLUIDS,2024,36,4,:12.Rp_Au:Wang, Yiwei
APA	王静竹,王广航,&王一伟.(2024).Splashing and sealing of an ejecta sheet induced by a cavitation bubble close to a water surface.PHYSICS OF FLUIDS,36(4),12.
MLA	王静竹,et al."Splashing and sealing of an ejecta sheet induced by a cavitation bubble close to a water surface".PHYSICS OF FLUIDS 36.4(2024):12.