In this paper, a lattice Boltzmann model based on the phase-field Cahn–Hilliard-based approach is proposed to deal with ternary fluid flows in the axisymmetric coordinate system. The present model can handle both high density and viscosity ratios for partial and total spreading scenarios. A variety of numerical tests, including a static droplet test, a breakup of a liquid thread test, a spreading of a liquid lens test, and a droplet collision test, were performed to verify the model. It is found that the proposed model produces accurate results which agree well with the available data.

中文翻译：

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用于模拟三元流体流动的轴对称晶格 Boltzmann 模型

在本文中，提出了一种基于相场 Cahn-Hilliard 方法的格子 Boltzmann 模型来处理轴对称坐标系中的三元流体流动。本模型可以处理部分和全部铺展情况的高密度和粘度比。进行了各种数值试验，包括静态液滴试验、液丝断裂试验、液体透镜扩散试验和液滴碰撞试验，以验证模型。发现所提出的模型产生了与可用数据非常吻合的准确结果。