Surfactant-laden drop jellyfish-breakup mode induced by the Marangoni effect

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• 作者：Hui Zhao ; Wen-Bin Zhang ; Jian-Liang Xu ; Wei-Feng Li ; Hai-Feng Liu
• 刊名：Experiments in Fluids
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：58
• 期：3
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer;
• 出版者：Springer Berlin Heidelberg
• ISSN：1432-1114
• 卷排序：58

文摘

Drop breakup is a familiar event in both nature and technology. In this study, we find that the bag breakup mode can be replaced by a new breakup mode: jellyfish breakup, when the surfactant concentration of a surfactant-laden drop is high. This new breakup mode has a morphology resembling a jellyfish with many long tentacles. This is due to the inhomogeneous distribution of surfactant in the process of drop deformation and breakup. The thin film of liquid can remain stable as a result of the Marangoni effect. Finally, we propose that the dimensionless surfactant concentration can serve as a criterion for breakup mechanisms.