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气泡之间相互作用的数值模拟 被引量:26

Numerical simulation of the interactions between two three-dimensional deformable bubbles
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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。 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...
出处 《水动力学研究与进展(A辑)》 CSCD 北大核心 2008年第6期681-686,共6页 Chinese Journal of Hydrodynamics
基金 国家自然科学基金(10672183)资助项目 浅水湖泊综合治理与资源开发教育部重点实验室开放研究基金(2007KJ005)
关键词 两个气泡 数值模拟 融合 上升速度 VOF/PLIC two bubbles numerical simulation merge rising velocity VOF/PLIC
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参考文献12

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