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首页> 外文期刊>Journal of Mechanical Science and Technology >Multiphase static droplet simulations in hierarchically structured super-hydrophobic surfaces
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Multiphase static droplet simulations in hierarchically structured super-hydrophobic surfaces

机译：分层结构的超疏水表面中的多相静态液滴模拟

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摘要

The surface of first part of study is textured with microscopic pillars of prototypical top geometries as a rectangle. The second one is textured with a hierarchical structure, composed of secondary pillar structures added on the primary texture. The length ratio between two scales of texture is 1:16. We evaluated the non-wetting characteristics of two types of surfaces by measuring CAs as well as the transition from the Wenzel's to Cassie's regimes. We measure the Contact angles (CAs), using the Lattice Boltzmann model (LBM), for two different surface configurations. We evaluated the effect of the hierarchical structure; the robustness of the Cassie regime is enhanced and the apparent contact angle is increased by the secondary structures. This is achieved by increasing the energy barrier against the transition between wetting and non-wetting regimes.
机译：研究的第一部分的表面以矩形的原型顶部几何形状的微观柱子作为纹理。第二个纹理具有分层结构，该结构由添加到主纹理上的辅助支柱结构组成。两个纹理比例之间的长度比为1:16。我们通过测量CA以及从Wenzel态到Cassie态的过渡来评估两种类型表面的非润湿特性。我们使用Lattice Boltzmann模型（LBM）测量两种不同表面配置的接触角（CAs）。我们评估了层次结构的效果;二级结构增强了卡西体制的鲁棒性，并增加了表观接触角。这是通过增加能量屏障来防止润湿和非润湿状态之间的过渡来实现的。

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