Knowledge Management System Of Institute of process engineering,CAS
| Eulerian–Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model | |
Xue Jing ; Chen Feiguo; Yang Ning; Ge Wei
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| 2017 | |
| Source Publication | Chinese Journal of Chemical Engineering
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| ISSN | 1004-9541 |
| Volume | 25Issue:3Pages:249 |
| Abstract | 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. |
| Keyword | Bubble column Spring-dashpot model Coalescence Break-up Bubble size distribution |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/44599 |
| Collection | 中国科学院过程工程研究所 |
| Affiliation | 中国科学院过程工程研究所 |
| First Author Affilication | 中国科学院过程工程研究所 |
| Recommended Citation GB/T 7714 | Xue Jing,Chen Feiguo,Yang Ning,等. Eulerian–Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model[J]. Chinese Journal of Chemical Engineering,2017,25(3):249. |
| 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. |
| 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. |
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