Simulation of Droplets Collisions Using Two-Phase Entropic Lattice Boltzmann Method
Open access
Date
2015-12Type
- Journal Article
Abstract
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
Permanent link
https://doi.org/10.3929/ethz-b-000107976Publication status
publishedExternal links
Journal / series
Journal of Statistical PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Droplet collision dynamics; Entropic lattice Boltzmann method; Two-phase flowOrganisational unit
03611 - Boulouchos, Konstantinos (emeritus) / Boulouchos, Konstantinos (emeritus)
Notes
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.More
Show all metadata