Surface tension driven fingering of a viscoplastic film
Surface tension driven fingering of a viscoplastic film
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DOI：
10.1016/j.jnnfm.2006.07.011
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发表时间：
2007-03-16
影响因子：
3.1
通讯作者：
Myers, Tim
中科院分区：
文献类型：
--
作者：
Balmforth, Neil;Ghadge, Shilpa;Myers, Tim
我们研究了薄层粘塑性流体的表面张力驱动指进问题。利用标准润滑理论，我们推导出了考虑表面张力和屈服应力影响的薄膜流动方程。我们得到了行波解来模拟稳定传播的锋面的前进，然后应用线性稳定性分析来模拟手指的生长和确定屈服应力的影响。数值计算结果与实验结果定性吻合。(C)2006爱思唯尔B.V.保留所有权利。
We investigate surface-tension-driven fingering of a thin layer of viscoplastic fluid. Using standard lubrication theory we derive an equation for the flow of the film which includes effects of surface tension and yield stress. We obtain traveling-wave solutions to model the advance of a steadily propagating front and then apply a linear stability analysis to model finger growth and to determine the effect of the yield stress. Qualitative agreement is demonstrated between the numerical results and experiments. (c) 2006 Elsevier B.V. All rights reserved.