Phase field simulation of liquid filling on grooved surfaces for complete, partial, and pseudo-partial wetting cases.
Phase field simulation of liquid filling on grooved surfaces for complete, partial, and pseudo-partial wetting cases.
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DOI：
10.1063/5.0144886
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发表时间：
2023-05
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影响因子：
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通讯作者：
F. Oktasendra;A. Jusufi;A. Konicek;M. Yeganeh;Jack R. Panter;H. Kusumaatmaja
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文献类型：
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作者：
F. Oktasendra;A. Jusufi;A. Konicek;M. Yeganeh;Jack R. Panter;H. Kusumaatmaja
我们发展并利用相场模拟方法来研究沟槽表面上的液体填充。我们考虑短程和长程液固相互作用，后者包括纯粹的吸引和排斥的相互作用，以及那些与短程吸引和长程排斥。这使我们能够捕获完整的，部分的，和伪部分润湿状态，证明复杂的分离压力分布在整个范围内的可能的接触角，如以前提出的文献。应用模拟的方法来研究液体填充沟槽表面上，我们比较了填充过渡的三种不同类别的润湿状态，因为我们改变的液相和气相之间的压力差。填充和排空过渡是可逆的完全润湿的情况下，而观察到的部分和伪部分的情况下显着的滞后。与以前的研究一致，我们还表明，填充过渡的临界压力遵循开尔文方程的完全和部分润湿的情况下。最后，我们发现填充过渡可以显示一些不同的形态路径的伪部分润湿的情况下，我们在这里展示了不同的凹槽尺寸。
We develop and harness a phase field simulation method to study liquid filling on grooved surfaces. We consider both short-range and long-range liquid-solid interactions, with the latter including purely attractive and repulsive interactions as well as those with short-range attraction and long-range repulsion. This allows us to capture complete, partial, and pseudo-partial wetting states, demonstrating complex disjoining pressure profiles over the full range of possible contact angles as previously proposed in the literature. Applying the simulation method to study liquid filling on grooved surfaces, we compare the filling transition for the three different classes of wetting states as we vary the pressure difference between the liquid and gas phases. The filling and emptying transitions are reversible for the complete wetting case, while significant hysteresis is observed for the partial and pseudo-partial cases. In agreement with previous studies, we also show that the critical pressure for the filling transition follows the Kelvin equation for the complete and partial wetting scenarios. Finally, we find the filling transition can display a number of distinct morphological pathways for the pseudo-partial wetting cases, as we demonstrate here for varying groove dimensions.