Ligament break-up simulation through pseudo-potential Lattice Boltzmann Method
Computational Physics
2019-04-29 v1
Abstract
The Plateau-Rayleigh instability causes the fragmentation of a liquid ligament into smaller droplets. In this study a numerical study of this phenomenon based on a single relaxation time (SRT) pseudo-potential lattice Boltzmann method (LBM) is proposed. If systematically analysed, this test case allows to design appropriate parameters sets to deal with engineering applications involving the hydrodynamics of a jet. Grid convergence simulations are performed in the limit where the interface thickness is asymptotically smaller than the characteristic size of the ligament. These simulations show a neat asymptotic behaviour, possibly related to the convergence of LBM diffuse-interface physics to sharp interface hydrodynamics.
Cite
@article{arxiv.1904.11792,
title = {Ligament break-up simulation through pseudo-potential Lattice Boltzmann Method},
author = {Daniele Chiappini and Xiao Xue and Giacomo Falcucci and Mauro Sbragaglia},
journal= {arXiv preprint arXiv:1904.11792},
year = {2019}
}