中文摘要：

运用一种双分布函数多相格子Boltzmann模型,对几种气泡运动进行数值模拟,并分析了模型本身。指出在使用模型进行分析计时应注意的一些问题。进一步对气泡上升过程中流场压力分布的分析,提出模型中浮力产生原理的假设,根据假设提出了计算气泡上浮时适当的引入浮力的方法。

英文摘要：

A multiphase Lattice Boltzmann free-energy model with two particle distribution functions is adopted in order to simulate a few kinds of bubble movements. The model itself is analyzed as well. Few problems were discovered during our simulations. Furthermore, an assumption was proposed to explain how buoyancy acts in the model according to the analysis of pressure field during the bubble rising. Based on the assumption, a proper method to introduce the buoyancy into Lattice Boltzmann free-energy model was proposed as well.