中文摘要：

该文采用VOF(Volume-of-Fluid)中的PLIC(Piecewise Linear Interface Calculation)界面重构方法模拟研究了不同放置方式气泡之间的相互作用,重点分析了外围流体黏性及气泡间距对其影响。结果表明,外围流体黏性及气泡间距对气泡的融合及上升速度都具有不同程度的影响,气泡水平放置时,泡间距较小时,气泡上升速度比单个要大。在气泡开始融合到此过程结束的同时,上升速度出现了先降低后反弹的现象,且随着雷诺数的增加速度降低开始时间滞后。

英文摘要：

A numerical method for interface tracking using the VOF/PLIC is applied to simulate bubbles interactions with a wide range of Reynolds number and separation distance in viscous fluid. The present results show that both viscosity and the separation distance are important effects on the merging processes and rising velocities. The rising velocities increase along with the less distance for two bubbles rising side by side. The hysteresis of rising velocity decrease during the period of volume changing in lower...