We propose a combined computational approach based on the multi-phase-field and the lattice Boltzmann method for the motion of solid particles under the action of capillary forces. The accuracy of the method is analyzed by comparison with the analytic solutions for the force and motion of two parallel plates of finite extension connected by a capillary bridge. The method is then used to investigate the dynamics of multiple spherical solid bodies connected via capillary bridges. The amount of liquid connecting the spheres is varied, and the influence of the resulting liquid-morphology on their dynamics is investigated. It is shown that the method is suitable for a study of liquid-phase sintering which includes both phase transformation and capillary driven rigid body motion.

中文翻译：

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用多相场和格子-玻尔兹曼方法模拟毛细管驱动动力学

我们提出了一种基于多相场和格子 Boltzmann 方法的组合计算方法，用于在毛细管力作用下固体颗粒的运动。通过与毛细管桥连接的两个有限伸展平行板的力和运动的解析解进行比较，分析了该方法的准确性。然后使用该方法研究通过毛细管桥连接的多个球形固体的动力学。连接球体的液体量是变化的，并且研​​究了由此产生的液体形态对其动力学的影响。结果表明，该方法适用于包括相变和毛细管驱动刚体运动的液相烧结研究。