Simulation of droplets impact on curved surfaces with lattice Boltzmann method
Simulation of droplets impact on curved surfaces with lattice Boltzmann method
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DOI：
10.1016/j.ijheatmasstransfer.2012.07.007
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发表时间：
2012-11
影响因子：
5.2
通讯作者：
S. Shen;F. Bi;Yali Guo
中科院分区：
文献类型：
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作者：
S. Shen;F. Bi;Yali Guo
采用格子Boltzmann赝势模型研究了液滴撞击二维圆表面后的变形过程中的几个无量纲参数。变形过程可分为四种：移动、扩展、形核和下降。此外，在某些特殊情况下，还涉及部件飞溅。结果表明，液滴的撞击速度对液滴的撞击动力学特性有着重要的影响。随着撞击速度的增加，撞击过程中出现了不同的状态。此外，当表面是疏水的时，会发生飞溅。
Several dimensionless parameters are studied to describe their effects on the deformation of a droplet after impact on a 2D round surface by using lattice Boltzmann implementation of pseudo-potential model. Four typical deformation process can be found: moving, spreading, nucleating and falling. In addition, in some special cases, part splashing is involved. It is observed that impact velocity of droplet has a significant influence on the droplet impacting dynamics. With the increasing of the impact velocity, different states have been found during the process. Moreover, when the surface is hydrophobic, splash occurs.