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Dynamic Characteristics and Wall Effects of Bubble Bursting in Gas-Liquid-Solid Three-Phase Particle Flow

by Jianfei Lu 1,2,3, Tong Wang 1,2,*, Lin Li 1,2, Zichao Yin 1,2, Ronghui Wang 1,2, Xinghua Fan 1,2 and Dapeng Tan 1,2,*
1
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
2
Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
3
Zhejiang Chendiao Machinery Company Limited, Lishui 321404, China
*
Authors to whom correspondence should be addressed.
Processes 2020, 8(7), 760; https://doi.org/10.3390/pr8070760 (registering DOI)
Received: 6 June 2020 / Revised: 26 June 2020 / Accepted: 26 June 2020 / Published: 29 June 2020
(This article belongs to the Section Chemical Systems)
The bubble bursting process existing in the particle flow is a complex gas-liquid-solid three-phase coupling dynamic problem. The bubble bursting mechanism, including dynamic characteristics and wall effects, is not clear. To address the above matters, we present a modeling method for the piecewise linear interface calculation-volume of fluid (PLIC-VOF) based bubble burst. The bubble bursting process near or on the wall is analyzed to reveal the dynamic characteristics of bubble bursting and obtain the effect of a bubble bursting on the surrounding flow field. Then a particle image velocimetry (PIV) based self-developed experimental observation platform is established, and the effectiveness of the proposed method is verified. Research results indicate that, in the high-speed turbulent environment, a large pressure difference existed in the bubble tail, which induces the bubble burst to occur; the distance between the wall and the bubble decreases; the higher the flow velocity is, the less time is acquired for bubble bursting, but when the flow velocity exceeds the critical velocity 50 m/s, more time is needed; the coalescence-burst process of double bubbles increases the bubble bursting time, which causes the acceleration of particle motion to reduce. View Full-Text
Keywords: gas-liquid-solid three-phase particle flow; bubble burst; PLIC-VOF; micro-jet; wall effect gas-liquid-solid three-phase particle flow; bubble burst; PLIC-VOF; micro-jet; wall effect
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Lu, J.; Wang, T.; Li, L.; Yin, Z.; Wang, R.; Fan, X.; Tan, D. Dynamic Characteristics and Wall Effects of Bubble Bursting in Gas-Liquid-Solid Three-Phase Particle Flow. Processes 2020, 8, 760.

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