液滴聚结中的通用缩放定律：耗散粒子动力学研究,Chemical Physics Letters

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液滴聚结中的通用缩放定律：耗散粒子动力学研究
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2020-08-26 , DOI: 10.1016/j.cplett.2020.137917
V.S. Akella , Harinadha Gidituri

我们报告了使用耗散粒子动力学（DPD）二维二维液滴的聚结模拟研究，该算法是模拟软物质系统的常用介观方法。当两个液滴合并时，桥或颈半径的时间演变 ${[R}_{b} （ Ť ）$ 遵循确定的缩放定律，该定律是通过平衡相关的惯性/粘滞应力与界面张力应力而得出的。我们通过改变液滴与周围流体的粘度比，成功地验证了这些比例定律。此外，对于给定的政权，我们表明 ${[R}_{b} （ Ť ）$ 适当缩放模拟时间t时的数据。

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Universal scaling laws in droplet coalescence: A dissipative particle dynamics study

We report simulation studies on two-droplet coalescence in two-dimensions using Dissipative Particle Dynamics (DPD), a commonly used mesoscopic method for simulating soft matter systems. When two droplets undergo coalescence, the temporal evolution of bridge or neck radius $r_{b} (t)$ follows definite scaling laws which are derived by balancing relevant inertial/viscous stresses with the interfacial tension stresses. We successfully validated these scaling laws by varying viscosity ratio of droplet and surrounding fluids. Furthermore, for a given regime, we show collapse of $r_{b} (t)$ data when simulation time t is appropriately scaled.

更新日期：2020-09-02

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