Mixing within drops via surface shear viscosity
Mixing within drops via surface shear viscosity
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通过表面剪切粘度在液滴内混合
DOI：
10.1016/j.ijheatmasstransfer.2018.04.057
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发表时间：
2018
影响因子：
5.2
通讯作者：
A. Hirsa
中科院分区：
文献类型：
--
作者：
Shreyash Gulati;F. Riley;Juan M. Lopez;A. Hirsa
引入了利用表面剪切粘度的作用来混合液滴内部的新策略。液滴受到两个差动旋转的锋利边缘接触环的约束。环的差动旋转通过表面剪切粘度传递到本体流体中，从而与静止情况相比增强了混合。首先，在一个半球最初与另一个半球的浓度不同的配置中考虑混合。当惯性变得重要时，与两个环静止的情况相比，混合时间会减少一个数量级。半球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。这种液滴混合方法被发现是一种有效的无容器混合器，并且可用于固壁相互作用有害的化学和生物应用中。
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.
影响因子：
16.6
作者：
Song, H;Tice, JD;Ismagilov, RF
通讯作者：
Ismagilov, RF
影响因子：
6.1
作者：
De Bruyker D;Recht MI;Bhagat AA;Torres FE;Bell AG;Bruce RH
通讯作者：
Bruce RH