期刊
PHYSICS OF FLUIDS
卷 25, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4793544
关键词
boundary layers; bubbles; capillarity; coatings; compressible flow; external flows; foams; microfluidics; sliding friction; two-phase flow; viscosity
Many microfluidics devices, coating processes, or diphasic flows involve the motion of a liquid meniscus on a wet wall. This motion induces a specific viscous force, that exhibits a nonlinear dependency in the meniscus velocity. We propose a review of the theoretical and experimental work made on this viscous force, for simple interfacial properties. The interface is indeed assumed either perfectly compressible (mobile interface) or perfectly incompressible (rigid interface). We show that, in the second case, the viscous force exerted by the wall on the meniscus is a combination of two power laws, scaling such as Ca-1/3 and Ca-2/3, with Ca the capillary number. We provide a prediction for the stress exerted on a foam sliding on a wet solid and compare it with experimental data, for the incompressible case. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793544]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据