Influencing factors and scaling law of bubble detachment at a submerged orifice

IMECH-IR > 流固耦合系统力学重点实验室

	Influencing factors and scaling law of bubble detachment at a submerged orifice
	Wang YW(王一伟); Huang CG(黄晨光); Wu XC(吴小翠); Wang, YW (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China.
会议录名称	PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 7
	2017
会议名称	ASME International Mechanical Engineering Congress and Exposition (IMECE2016)
会议日期	NOV 11-17, 2016
会议地点	Phoenix, AZ
摘要	Bubble formation and detachment are important in the drag reduction of underwater vehicle by using gas injection, which are involved in the integrated scaling law considering bubbles coalescence. The parameters of influencing factors are theoretically derived by dimensionless analysis on this issue. Then the effects are shown by analyzing results with various parameters. Results indicate that, the viscous force can be neglected near the default condition, and the bubble is difficult to detach if the viscosity is very large. Surface tension is the major constraint force in the default condition, which is also sensitive. The bubble easily crushes if the surface tension is small, while the neck of bubble can hardly break up if the surface tension is large. For the contact angle, the bubble profile significantly exceeds the orifice boundary if the wall surface is hydrophobic, which makes detachment period becomes larger.
关键词	Constant-flow Conditions Layer Drag Reduction Simulation Liquid
WOS记录号	WOS:000400877800043
资助信息	This research was sponsored by National Natural Science Foundation of China under Contract 11332011 and 11202215. This project was also supported by the Youth Innovation Promotion Association CAS (2015015).
ISBN号	978-0-7918-5061-9
收录类别	CPCI-S ; EI
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/72180
专题	流固耦合系统力学重点实验室
通讯作者	Wang, YW (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China.
作者单位	1.[Wang, Yiwei 2.Huang, Chenguang 3.Wu, Xiaocui] Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang YW,Huang CG,Wu XC,et al. Influencing factors and scaling law of bubble detachment at a submerged orifice[C]PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 7,2017.

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