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Eulerian-Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model
Xue, Jing1,2; Chen, Feiguo1; Yang, Ning1; Ge, Wei1

The Eulerian-Lagrangian simulation of bubbly flow has the advantage of tracking the motion of bubbles in continuous fluid, and hence the position and velocity of each bubble could be accurately acquired. Previous simulation usually used the hard-sphere model for bubble-bubble interactions, assuming that bubbles are rigid spheres and the collisions between bubbles are instantaneous. The bubble contact time during collision processes is not directly taken into account in the collision model. However, the contact time is physically a prerequisite for bubbles to coalesce, and should be long enough for liquid film drainage. In this work we applied the spring-dashpot model to model the bubble collisions and the bubble contact time, and then integrated the spring-dashpot model with the film drainage model for coalescence and a bubble breakage model. The bubble contact time is therefore accurately recorded during the collisions. We investigated the performance of the spring-dashpot model and the effect of the normal stiffness coefficient on bubble coalescence in the simulation. The results indicate that the spring-dashpot model together with the bubble coalescence and breakage model could reasonably reproduce the two-phase flow field, bubble coalescence and bubble size distribution. The influence of normal stiffness coefficient on simulation is also discussed. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

KeywordBubble Column Spring-dashpot Model Coalescence Break-up Bubble Size Distribution
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordLiquid 2-phase Flow ; Turbulent Dispersions ; Break-up ; Columns
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China(91434121) ; Ministry of Science and Technology of China(2013BAC12B01) ; State Key Laboratory of Multiphase complex systems(MPCS-2015-A-03) ; Chinese Academy of Sciences(XDA07080301)
WOS IDWOS:000399699300001
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xue, Jing,Chen, Feiguo,Yang, Ning,et al. Eulerian-Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2017,25(3):249-256.
APA Xue, Jing,Chen, Feiguo,Yang, Ning,&Ge, Wei.(2017).Eulerian-Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model.CHINESE JOURNAL OF CHEMICAL ENGINEERING,25(3),249-256.
MLA Xue, Jing,et al."Eulerian-Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model".CHINESE JOURNAL OF CHEMICAL ENGINEERING 25.3(2017):249-256.
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