Hydrophobic and Hydrophilic Solid-Fluid Interaction
Hydrophobic and Hydrophilic Solid-Fluid Interaction
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DOI：
10.1145/3550454.3555478
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
Jinyuan Liu;Mengdi Wang;Fan Feng;Annie Tang;Qiqin Le;Bo Zhu
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文献类型：
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作者：
Jinyuan Liu;Mengdi Wang;Fan Feng;Annie Tang;Qiqin Le;Bo Zhu
我们提出了一种新的固-流耦合方法来捕捉液体，固体和空气在其多相交界处的微妙的疏水和亲水相互作用。我们的方法的关键组成部分是一个拉格朗日模型，处理动态接触线的耦合，演变和平衡的表面张力流体和可变形物体之间的界面上发展。该接触线模型捕捉了小尺度几何和物理过程的集合，包括动态滨水跟踪、局部动量传递和力平衡以及界面张力计算。在此接触线模型的基础上，我们进一步发展了一种基于网格的水平集方法来演化可变形固体表面上的三相T形结。我们的动态接触线模型，结合其整体耦合系统，统一了各种疏水和亲水固-液相互作用现象的模拟，并使以前难以或不切实际解决的具有挑战性的小尺度弹性毛细现象，如弹性毛细折纸和自组装，液滴的动态接触角，毛细粘附，以及在振动表面上的润湿和飞溅。
We propose a novel solid-fluid coupling method to capture the subtle hydrophobic and hydrophilic interactions between liquid, solid, and air at their multi-phase junctions. The key component of our approach is a Lagrangian model that tackles the coupling, evolution, and equilibrium of dynamic contact lines evolving on the interface between surface-tension fluid and deformable objects. This contact-line model captures an ensemble of small-scale geometric and physical processes, including dynamic waterfront tracking, local momentum transfer and force balance, and interfacial tension calculation. On top of this contact-line model, we further developed a mesh-based level set method to evolve the three-phase T-junction on a deformable solid surface. Our dynamic contact-line model, in conjunction with its monolithic coupling system, unifies the simulation of various hydrophobic and hydrophilic solid-fluid-interaction phenomena and enables a broad range of challenging small-scale elastocapillary phenomena that were previously difficult or impractical to solve, such as the elastocapillary origami and self-assembly, dynamic contact angles of drops, capillary adhesion, as well as wetting and splashing on vibrating surfaces.