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arXiv 1111.1214physics.flu-dyn
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接触线摩擦主导的动态润湿的普适性

Universality in dynamic wetting dominated by contact line friction

Andreas Carlson, Gabriele Bellani, Gustav Amberg

摘要:

我们报告的快速接触线运动的实验中存在的早期阶段的毛细管驱动的液滴在干燥的固体基板上的传播。扩展数据不能遵循传统的粘性或惯性缩放。通过整合实验和模拟,我们量化的接触线摩擦($μ_f$),这被认为是限制快速动态润湿的速度。基于此接触线摩擦的缩放示出产生作为时间的函数的接触线半径的演变的通用曲线,对于一系列的流体粘度,液滴尺寸和表面润湿性。

英文摘要:

We report experiments on the rapid contact line motion present in the early stages of capillary driven spreading of drops on dry solid substrates. The spreading data fails to follow a conventional viscous or inertial scaling. By integrating experiments and simulations, we quantify a contact line friction ($μ_f$), which is seen to limit the speed of the rapid dynamic wetting. A scaling based on this contact line friction is shown to yield a universal curve for the evolution of the contact line radius as a function of time, for a range of fluid viscosities, drop sizes and surface wettabilities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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