A theoretical model for bubble coalescence by coupling film drainage with approach processes
A theoretical model for bubble coalescence by coupling film drainage with approach processes
复制标题
膜排水与接近过程耦合的气泡聚结理论模型
DOI：
10.1016/j.ces.2019.115387
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发表时间：
2020-02
影响因子：
4.7
通讯作者：
He’an Luo
中科院分区：
文献类型：
--
作者：
Shenggao Gong;Ningning Gao;Luchang Han;He’an Luo
提出了一种改进的湍流气泡聚并理论模型。与以往的模型不同，该模型考虑了接近速度、膜厚、膜面积/半径和相互作用力等随时间的变化对气泡聚并的影响，同时模拟了全流动界面条件下两个气泡间的气膜引出和接近过程。为了模拟接近过程，引入了碰撞面扁平所产生的润滑力形式的阻力。用实验数据验证了公式的正确性，估算了膜过滤过程所需的初始膜厚和膜半径。改进模型预测的聚结临界速度与已有的实验数据基本一致。利用改进后的模型对鼓泡塔内的颗粒分布进行了预测，模拟结果与实验结果吻合较好。
An improved theoretical model for simulating bubble coalescence caused by turbulence was developed. Unlike the previous models, this improved model simulated the film drainage and approach processes between two bubbles simultaneously in the condition of fully mobile interfaces, considering the influence of the variation of approach velocity, film thickness, film area/radius and interaction forces etc. with time on the bubble coalescence. The lubrication form drag force caused by flattening of colliding surface was introduced to model the approach process. The initial film thickness and radius required for film drainage process were estimated by the expressions validated by experimental data. The critical coalescence velocities for determining coalescence predicted by the improved model were consistent with available experimental data. Moreover, the proposed improved model was used to predict the size distribution in a bubble column, and a good agreement between simulated and experimental results was obtained.
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影响因子：
3.7
作者：
M. Prince;H. Blanch
通讯作者：
M. Prince;H. Blanch
DOI：
10.1016/b978-0-12-391927-4.10024-6
发表时间：
1985
期刊：
The European Physical Journal C
影响因子：
--
作者：
J. Israelachvili
通讯作者：
J. Israelachvili
影响因子：
3.9
作者：
Karakashev, Stoyan I.;Nguyen, Phong T.;Nguyen, Anh V.
通讯作者：
Nguyen, Anh V.
DOI：
10.1016/j.cam.2015.04.013
发表时间：
2016-02
期刊：
J. Comput. Appl. Math.
影响因子：
--
作者：
I. Bazhlekov;D. Vasileva
通讯作者：
I. Bazhlekov;D. Vasileva
DOI：
10.1021/la904481d
发表时间：
2010-06-01
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Yaminsky VV;Ohnishi S;Vogler EA;Horn RG
通讯作者：
Horn RG