On the airflow in a cavity during water entry

doi:10.1016/j.ijmultiphaseflow.2022.104073

IMECH-IR > 流固耦合系统力学重点实验室

	On the airflow in a cavity during water entry
	Wang YF(王宇飞)1,2 ; Wang ZY(王志英)1; Du Y(杜岩)1,2 ; Wang JZ(王静竹)1,2; Wang YW(王一伟)1,2,3 ; Huang CG(黄晨光)4
通讯作者	Wang, Zhiying(wangzhiying@imech.ac.cn) ; Wang, Yiwei(wangyw@imech.ac.cn)
发表期刊	INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
	2022-06-01
卷号	151 页码:11
ISSN	0301-9322
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.
关键词	Water entry Airflow field in the cavity
DOI	10.1016/j.ijmultiphaseflow.2022.104073
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000788074200001
关键词[WOS]	DYNAMICS ; SURFACE ; BREAKUP
WOS研究方向	Mechanics
WOS类目	Mechanics
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]
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promo-tion Association CAS
论文分区	二类
力学所作者排名	1
RpAuthor	Wang, Zhiying ; Wang, Yiwei
引用统计	被引频次：5[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/311007/89040
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; 4.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wang YF,Wang ZY,Du Y,et al. On the airflow in a cavity during water entry[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2022,151:11.
APA	王宇飞,王志英,杜岩,王静竹,王一伟,&黄晨光.(2022).On the airflow in a cavity during water entry.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,151,11.
MLA	王宇飞,et al."On the airflow in a cavity during water entry".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 151(2022):11.

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