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.
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
会议录名称PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 7
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
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]. NEW YORK:AMER SOC MECHANICAL ENGINEERS,2017.
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