Binary mixture flow with free energy lattice Boltzmann methods
Numerical Analysis
2022-12-06 v1 Numerical Analysis
Fluid Dynamics
Abstract
We use free energy lattice Boltzmann methods (FRE LBM) to simulate shear and extensional flow of a binary mixture in two and three dimensions. To this end, two classical configurations are digitally twinned, namely a parallel-band device for binary shear flow and a four-roller apparatus for binary extensional flow. The FRE LBM and the test cases are implemented in the open-source C++ framework OpenLB and evaluated for several non-dimensional numbers. Characteristic deformations are captured, where breakup mechanisms occur for critical capillary regimes. Though the known mass leakage for small droplet-domain ratios is observed, suitable mesh sizes show good agreement to analytical predictions and reference results.
Keywords
Cite
@article{arxiv.2212.01617,
title = {Binary mixture flow with free energy lattice Boltzmann methods},
author = {Stephan Simonis and Johannes Nguyen and Samuel J. Avis and Willy Dörfler and Mathias J. Krause},
journal= {arXiv preprint arXiv:2212.01617},
year = {2022}
}