Three stages of bubble formation on submerged orifice under constant gas flow rate

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	Three stages of bubble formation on submerged orifice under constant gas flow rate
	Yu XX(于娴娴); Wang YW(王一伟); Huang CG(黄晨光); Du TZ(杜特专); Yiwei Wang
会议录名称	Journal of Physics: Conference Series 656 (2015) 012042
	2015-12
会议名称	9TH INTERNATIONAL SYMPOSIUM ON CAVITATION (CAV 2015)
会议日期	Dec 6-10, 2015
摘要	Bubble formation is involved in many engineering applications. It is important to understand the dynamics of bubble formation. This work reports experimental and numerical results of bubble formation on submerged orifice under constant gas flow rate. Compressible large eddy simulation combined volume of fluid (VOF) was adopted in simulation and results was validated by experiment. Bubble formation is divided into three stages in this paper, expansion stage, elongation stage and pinch-off stage. In expansion stage, The bubble grows radially due to the incoming gas flux, but the bubble base remains attached to the orifice. But as gas injected, the spherical bubble will go into the elongation stage when the downward resultant force is lager than upward resultant force. And when bubble neck's length is bigger than √2Rothe bubble will go into pinch-off stage. Cylindrical Rayleigh-Plesset equation can be used to describe the pinch-off stage. Uncertain parameter r in it is given reference value in this paper.
WOS记录号	WOS:000368580600042
课题组名称	LMFS冲击与耦合效应(LHO)
URL	查看原文
收录类别	CPCI-S ; EI
语种	英语
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58351
专题	流固耦合系统力学重点实验室
通讯作者	Yiwei Wang
推荐引用方式 GB/T 7714	Yu XX,Wang YW,Huang CG,et al. Three stages of bubble formation on submerged orifice under constant gas flow rate[C]Journal of Physics: Conference Series 656 (2015) 012042,2015.

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