A simple collision model for small bubbles
A simple collision model for small bubbles
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DOI：
10.1088/1361-648x/aa56fc
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发表时间：
2017-02
期刊：
影响因子：
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通讯作者：
S. Heitkam;Anna-Elisabeth Sommer;W. Drenckhan;J. Fröhlich
中科院分区：
文献类型：
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作者：
S. Heitkam;Anna-Elisabeth Sommer;W. Drenckhan;J. Fröhlich
在这项工作中，提出了一个小气泡与壁面或另一个气泡之间相互作用力的模型。该公式是专门为气泡或软球轨迹的拉格朗日计算而设计的，有或没有连续流体的分辨率。力只依赖于气泡的位置和速度。该模型不包括任何需要校准的经验参数。因此，该力模型易于实现。力的公式是明确的，这意味着低的计算量。对小气泡与倾斜顶壁的碰撞进行了数值和实验研究。新碰撞模型的计算结果与实验结果吻合较好。
In this work, a model for the interaction force between a small bubble and a wall or another bubble is presented. The formulation is especially designed for Lagrangian calculations of bubble or soft sphere trajectories, with or without resolution of the continuous fluid. The force only relies on position and velocity of the bubble. The model does not include any empirical parameter that would have to be calibrated. Therefore, this force model is easy to implement. The formulation of the force is explicit, which means low computational effort. The collision of a small bubble with an inclined top wall is investigated numerically and experimentally. The computational results achieved with the new collision model show good agreement with the experiment.