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中文摘要：
本文描述了剪切流动中牛顿液滴在不相溶连续体相中的变形断裂的机理，采用逆向旋转透明Couette装置及微距摄相技术研究剪切流动中液滴的断裂。实验结果表明液滴的断裂取决于毛细数和粘度比，并通过三种机理得以实现：颈缩、端部夹断和毛细不稳定性。实验结果揭示了产生毛细断裂时的l临界液线直径、无量纲毛细波长与剪切率和初始液滴尺寸关系。
英文摘要：
The behavior of single drop immersed in immiscible matrix subjected to a simple shear flow was investigated. The approach taken here is to visually follow the deformation and breakup of drop in transparent Couette flow cell using video optical technique. From experimentally observations, the mechanisms of drop breakup depend on capillary number and the viscosity ratio; the breakup occurred by three mechanisms, namely, necking, end pinching, and capillary instability. The results show the relations of the capillary thread radius and the dimensionless wavelength with the shear rate and the initial drop size.
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