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首页> 外文期刊>International Journal of Heat and Mass Transfer >Mixing within drops via surface shear viscosity
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Mixing within drops via surface shear viscosity

机译：通过表面剪切粘度在液滴内混合

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A new strategy for mixing inside drops is introduced utilizing the action of surface shear viscosity. A drop is constrained by two sharp-edged contact rings that are differentially rotating. Differential rotation of the rings is conveyed by surface shear viscosity into the bulk fluid, thus enhancing the mixing when compared to the quiescent case. Primarily, mixing was considered in a configuration where one hemisphere is initially at a different concentration than the other. When inertia becomes important, the mixing time is reduced by an order of magnitude compared to the case where the two rings are stationary. Various driving speeds of one ring or counter rotation of two rings are considered for the hemispherical initial concentration. Mixing of a core–shell initial concentration was also considered. This approach to mixing in a drop is found to be an effective containerless mixer and may be utilized in chemical and biological applications where solid-wall interactions are deleterious.
机译：利用表面剪切粘度的作用，提出了一种在液滴内部混合的新策略。下落受到两个尖角接触环的限制，该接触环不同地旋转。环的差速旋转通过表面剪切粘度传递到本体流体中，因此与静态情况相比，增强了混合。首先，考虑在一个半球最初与另一个半球的浓度不同的配置下进行混合。当惯性变得很重要时，与两个环静止不动的情况相比，混合时间减少了一个数量级。对于半球形的初始浓度，考虑了一个环的各种驱动速度或两个环的反向旋转。还考虑了核-壳初始浓度的混合。已经发现这种在液滴中混合的方法是有效的无容器混合器，并且可以用于固体壁相互作用有害的化学和生物学应用中。

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