| 表面粘度对小气泡聚并的影响 |
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| 引用本文： | 李佟茗 贾绍义. 表面粘度对小气泡聚并的影响[J]. 化工学报, 1995, 46(5): 532-538 |
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| 作者姓名： | 李佟茗 贾绍义 |
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| 作者单位： | 天津大学化工系!天津300072,天津大学化工系!天津300072 |
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| 摘 要： | 对2个小气泡间的聚并过程进行了动力学分析,着重考虑界面粘度的影响,得到气泡聚并所需时间与气泡直径、流体主体和界面性质的关系。
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| 关 键 词： | 气泡聚并 液膜流动 表面粘度 表面张力 |
EFFECTS OF SURFACE VISCOSITIES ON COALESCENCE BETWEEN TWO SMALL BUBBLES |
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| Li Dongming and Jia Shaoyi. EFFECTS OF SURFACE VISCOSITIES ON COALESCENCE BETWEEN TWO SMALL BUBBLES[J]. Journal of Chemical Industry and Engineering(China), 1995, 46(5): 532-538 |
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| Authors: | Li Dongming and Jia Shaoyi |
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| Abstract: | When two small bubbles approach each other, a dimpled thin film is formed between them. A model is developed for the dynamics of the thinning film with tangential mobile interfaces,in which the London -van der Waals forces are recognized. The model predicts the coalescence time, which is the time required for the thinning and rupture of the liquid film, given only the radii of the two bubbles and the required physical properties of the bulk fluid and interface. A more general expression for coalescence time is derived. It indicates that the surface viscosities play an important role in determining the surface mobility. The predicted result is in good agreement with previous experimental results. |
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| Keywords: | bubble coalescence thin film drainage surface viscosity |
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