Coalescence collision of liquid drops II: Off-center collisions of unequal-size drops
Coalescence collision of liquid drops II: Off-center collisions of unequal-size drops
复制标题
DOI：
10.1063/1.3624554
复制
发表时间：
2011-09-01
期刊：
影响因子：
1.6
通讯作者：
Garcia-Sucre, Maximo
中科院分区：
文献类型：
--
作者：
Acevedo-Malave, Alejandro;Garcia-Sucre, Maximo
本文首次应用光滑粒子流体力学方法在三维空间模拟了真空环境中不等大小液滴的流体动力学偏心碰撞。确定了液滴动力学的几种条件下的韦伯数。此外，在碰撞过程中显示了水滴内部的速度矢量场。在永久聚并的情况下，给出了动能和内能的演化。由此产生的液滴倾向于变形，并且根据韦伯数的第二种可能的结果，液滴碰撞产生：要么永久合并，要么絮凝。在液滴的永久合并中，模拟了一个破碎的情况，产生小卫星液滴的形成。版权所有2011作者本文采用知识共享署名3.0未移植许可协议发布。(doi: 10.1063/1.3624554)
We applied the Smoothed Particle Hydrodynamics method to simulate for first time in the three-dimensional space the hydrodynamic off-center collisions of unequal-size liquid drops in a vacuum environment. The Weber number for several conditions of the droplets dynamics is determined. Also the velocity vector fields inside the drops are shown in the collision process. The evolution of the kinetic and internal energy is shown for the permanent coalescence case. The resulting drops tend to deform, and depending of the Weber number two possible outcomes for the collision of droplets arise: either permanent coalescence or flocculation. In the permanent coalescence of the drops a fragmentation case is modeled, yielding the formation of little satellite droplets. Copyright 2011 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [doi:10.1063/1.3624554]