Hydrodynamics of double emulsion droplet in shear flow

被引:150
作者
Chen, Yongping [1 ,2 ]
Liu, Xiangdong [2 ]
Shi, Mingheng [2 ]
机构
[1] Yangzhou Univ, Sch Energy & Power Engn, Yangzhou 225127, Jiangsu, Peoples R China
[2] Southeast Univ, Key Lab Energy Thermal Convers & Control, Minist Educ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
OF-FLUID METHOD; BREAKUP; DEFORMATION; INERTIA; INTERFACES; DYNAMICS; FIELDS;
D O I
10.1063/1.4789865
中图分类号
O59 [应用物理学];
学科分类号
摘要
Hydrodynamic behaviors of double emulsion droplets in shear flow, both deformation and breakup, are investigated numerically. We find that the inner drop is deformed in a uniform vortical flow interior to the outer drop under steady state deformation conditions and provides an additional deformation resistance for the integral droplet especially when its volume fraction is large. In particular, we report four types of breakup modes via three mechanisms (i.e., necking, end pinching, and capillary instability), respectively, and present the corresponding phase diagrams to describe the breakup criteria (critical capillary numbers) and morphologies. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789865]
引用
收藏
页数:5
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