Stokes-flow instability due to interfacial surfactant
Stokes-flow instability due to interfacial surfactant
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DOI：
10.1063/1.1483838
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发表时间：
2002-05
影响因子：
4.6
通讯作者：
A. Frenkel;D. Halpern
中科院分区：
文献类型：
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作者：
A. Frenkel;D. Halpern
在Stokes近似下，研究了具有不溶性表面活性剂的两流体剪切流在平界面上的线性稳定性。为了分离表面活性剂的马兰戈尼效应，忽略重力。与所有相关流体系统的早期研究相反，我们遇到（i）仅由界面表面活性剂的引入引起的不稳定（在这里，剪切流）和（ii）仅由斯托克斯流的施加引起的不稳定（在这里，具有表面活性剂的系统）。得到了增长率的渐近长波表达式。
The linear stability of a two-fluid shear flow with an insoluble surfactant on the flat interface is investigated in the Stokes approximation. Gravity is neglected in order to isolate the Marangoni effect of the surfactant. In contrast to all earlier studies of related fluid systems, we encounter (i) the destabilization (here, of a shear flow) caused solely by the introduction of an interfacial surfactant and (ii) the destabilization (here, of a system with a surfactant) caused solely by the imposition of a Stokes flow. Asymptotic long-wave expressions for the growth rates are obtained.