用流体体积法研究流延过程中的动态润湿破坏
Dynamic wetting failure in curtain coating by the Volume-of-Fluid method
摘要：
在本文中，我们研究动态润湿的幕涂配置。在自适应笛卡尔网格上，采用流体体积法求解两相流纳维-斯托克斯方程。我们引入Navier边界条件来正则化三相点处的解，并消除由单元中心界面平流引起的隐式数值滑移。我们用一个恒定的接触角来描述动态接触线。控制方程的分辨率使我们能够预测发生润湿故障的基板速度。模型预测与先前的计算和实验观察。
英文摘要：
In this paper we investigate dynamic wetting in the curtain coating configuration. The two-phase Navier-Stokes equations are solved by a Volume-of-Fluid method on an adaptive Cartesian mesh. We introduce the Navier boundary condition to regularize the solution at the triple point and remove the implicit numerical slip induced by the cell-centered interface advection. We use a constant contact angle to describe the dynamic contact line. The resolution of the governing equations allows us to predict the substrate velocity at which wetting failure occurs. The model predictions are compared with prior computations and experimental observations.
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