渡线
机械
消散
打滑(空气动力学)
物理
经典力学
粘性液体
毛细管作用
缩放比例
材料科学
几何学
热力学
数学
人工智能
计算机科学
作者
Bauyrzhan K. Primkulov,Amir A. Pahlavan,Luis Cueto‐Felgueroso,Rubén Juanes
摘要
We present a theoretical study of viscous slug motion inside a microscopically rough capillary tube, where pronounced stick–slip motion can emerge at slow displacement rates. The mathematical description of this intermittent motion can be reduced to a system of ordinary differential equations, which also describe the motion of a pendulum inside a fluid-filled rotating drum. We use this analogy to show that the stick–slip motion transitions to steady sliding at high displacement rates. We characterize this crossover with a simple scaling relation and show that the crossover is accompanied by a shift in the dominant energy dissipation mechanisms within the system.
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