Simulation of Droplets Collisions Using Two-Phase Entropic Lattice Boltzmann Method
- Journal Article
Rights / licenseIn Copyright - Non-Commercial Use Permitted
The recently introduced entropic lattice Boltzmann model for multiphase flows (Mazloomi et al. in Phys Rev Lett 114:174502, 2015) is used to simulate binary droplet collisions. The entropy-based stabilization, together with a new polynomial equation of state, enhances performance of the model and allow us to simulate droplet collision for various Weber and Reynolds numbers and large liquid to vapor density ratio. Different types of droplet collision outcomes, namely coalescence, stretching separation and reflexive separation are recovered in a range of impact parameter for two equal sized droplets. The results demonstrated the essential role played by the surface tension, kinematic viscosity, impact parameter and relative velocity in the droplet collision dynamics leading to coalescence or separation collision outcomes. Comparison between numerical results and experiments in both coalescence and separation collisions demonstrate viability of the presented model. Show more
Journal / seriesJournal of Statistical Physics
Pages / Article No.
SubjectDroplet collision dynamics; Entropic lattice Boltzmann method; Two-phase flow
Organisational unit03611 - Boulouchos, Konstantinos (emeritus) / Boulouchos, Konstantinos (emeritus)
NotesIt was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
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