Volume 121, Number 3, February 2018
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||03 April 2018|
Coalescence preference and droplet size inequality during fluid phase segregation
Max-Planck-Institut für Intelligente Systeme - Heisenbergstr. 3, 70569 Stuttgart, Germany and IV. Institut für Theoretische Physik, Universität Stuttgart - Pfaffenwaldring 57, 70569 Stuttgart, Germany
Received: 11 December 2017
Accepted: 5 March 2018
Using molecular dynamics simulations and scaling arguments, we investigate the coalescence preference dynamics of liquid droplets in a phase-segregating off-critical, single-component fluid. It is observed that the preferential distance of the product drop from its larger parent, during a coalescence event, gets smaller for large parent size inequality. The relative coalescence position exhibits a power-law dependence on the parent size ratio with an exponent . This value of q is in strong contrast with earlier reports 2.1 and 5.1 in the literature. The dissimilarity is explained by considering the underlying coalescence mechanisms.
PACS: 47.55.df – Breakup and coalescence / 47.55.db – Drop and bubble formation / 64.75.Gh – Phase separation and segregation in model systems (hard spheres, Lennard-Jones, etc.)
© EPLA, 2018
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