再论Saffman-Taylor实验：吸液模式和液体夹带转变
Revisiting the Saffman-Taylor experiment: imbibition patterns and liquid-entrainment transitions
摘要：
我们重新萨夫曼-泰勒实验集中在强制吸制度的驱替流体润湿的围壁。我们展示了一类新的入侵模式，不显示典型的指状。我们的证据表明，这些意想不到的图案源于从移动弯月面的薄液膜的膨胀。然后，我们从理论上解释如何在接触线和界面变形的液体界面移动过去的固体表面的不稳定的结果之间的相互作用的流体流动。此外，这极小模型传达了一个统一的框架，始终占所有的液体夹带的情况下，迄今已报告。
英文摘要：
We revisit the Saffman-Taylor experiment focusing on the forced-imbibition regime where the displacing fluid wets the confining walls. We demonstrate a new class of invasion patterns that do not display the canonical fingering shapes. We evidence that these unanticipated patterns stem from the entrainement of thin liquid films from the moving meniscus. We then theoretically explain how the interplay between the fluid flow at the contact line and the interface deformations results in the destabilization of liquid interfaces moving past solid surfaces. In addition, this minimal model conveys a unified framework which consistently accounts for all the liquid-entrainment scenarios that have been hitherto reported.
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