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Title:
Influencing factors and scaling law of bubble detachment at a submerged orifice
Author: Wang YW(王一伟); Huang CG(黄晨光); Wu XC(吴小翠)
Issued Date: 2017
Conference Name: ASME International Mechanical Engineering Congress and Exposition (IMECE2016)
Conference Date: NOV 11-17, 2016
Conference Place: Phoenix, AZ
Abstract: 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.
Keyword: CONSTANT-FLOW CONDITIONS ; LAYER DRAG REDUCTION ; SIMULATION ; LIQUID
Indexed Type: CPCI-S ; EI
Corresponding Author: Wang, YW (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China.
Sponsorship: 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).
Source: PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 7
Publisher: AMER SOC MECHANICAL ENGINEERS
Publish Place: NEW YORK
Language: 英语
WOS ID: WOS:000400877800043
ISBN: 978-0-7918-5061-9
Citation statistics:
Content Type: 会议论文
URI: http://dspace.imech.ac.cn/handle/311007/72180
Appears in Collections:流固耦合系统力学重点实验室(2012-)_会议论文

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description.institution: 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

Recommended Citation:
Wang YW,Huang CG,Wu XC. Influencing factors and scaling law of bubble detachment at a submerged orifice[C]. 见:ASME International Mechanical Engineering Congress and Exposition (IMECE2016). Phoenix, AZ. NOV 11-17, 2016
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