Wetting boundary conditions for multicomponent pseudopotential lattice Boltzmann,International Journal for Numerical Methods in Fluids

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Wetting boundary conditions for multicomponent pseudopotential lattice Boltzmann
International Journal for Numerical Methods in Fluids ( IF 1.7 ) Pub Date : 2021-04-05 , DOI: 10.1002/fld.4988
Rodrigo C. V. Coelho _{1,

2} , Catarina B. Moura ₁ , Margarida M. Telo da Gama _{1,

2} , Nuno A. M. Araújo _{1,

2}

Affiliation

The implementation of boundary conditions is among the most challenging parts of modeling fluid flow through channels and complex media. Here, we show that the existing methods to deal with liquid-wall interactions using multicomponent Lattice Boltzmann are accurate when the wall is aligned with the main axes of the lattice but fail otherwise. To solve this problem, we extend a strategy previously developed for multiphase models. As an example, we study the coalescence of two droplets on a curved surface in two dimensions. The strategy proposed here is of special relevance for binary flows in complex geometries.

中文翻译：

多分量赝势晶格 Boltzmann 的润湿边界条件

边界条件的实现是模拟通过通道和复杂介质的流体流动的最具挑战性的部分之一。在这里，我们表明，当壁与晶格的主轴对齐时，使用多分量格子玻尔兹曼处理液壁相互作用的现有方法是准确的，否则就会失败。为了解决这个问题，我们扩展了先前为多相模型开发的策略。例如，我们研究了二维曲面上两个液滴的聚结。这里提出的策略与复杂几何中的二元流特别相关。

更新日期：2021-04-05

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