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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
Source PublicationJournal of Physics: Conference Series 656 (2015) 012042
2015-12
Conference Name9TH INTERNATIONAL SYMPOSIUM ON CAVITATION (CAV 2015)
Conference DateDec 6-10, 2015
AbstractBubble 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 IDWOS:000368580600042
DepartmentLMFS冲击与耦合效应(LHO)
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Indexed ByCPCI-S ; EI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58351
Collection流固耦合系统力学重点实验室
Corresponding AuthorYiwei Wang
Recommended Citation
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]:IOP Publishing,2015.
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