Numerical simulation of oil-droplet cleavage by surfactant.
Numerical simulation of oil-droplet cleavage by surfactant.
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DOI：
10.1115/1.2795960
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发表时间：
1996-05
期刊：
影响因子：
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通讯作者：
X. He;M. Dembo
中科院分区：
文献类型：
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作者：
X. He;M. Dembo
我们提出了数值计算的影响下的表面张力梯度所产生的表面活性剂释放在两极（格林斯潘实验）的油滴的变形。我们发现这种变形在纯表面张力梯度下是非常小的。为了解释在格林斯潘实验中观察到的油滴的大变形，我们提出了由表面活性剂的浓度梯度产生的泳动力的存在。我们表明，这一假设成功地解释了现有的实验数据，我们提出了一些进一步的测试。
We present numerical computations of the deformation of an oil-droplet under the influence of a surface tension gradient generated by the surfactant released at the poles (the Greenspan experiment). We find this deformation to be very small under the pure surface tension gradient. To explain the large deformation of oil droplets observed in Greenspan's experiments, we propose the existence of a phoretic force generated by the concentration gradient of the surfactant. We show that this hypothesis successfully explains the available experimental data and we propose some further tests.