Spreading of viscoplastic droplets
Fluid Dynamics
2021-07-01 v1 Soft Condensed Matter
Abstract
The spreading under surface tension and gravity of a droplet of yield-stress fluid over a thin film of the same material is studied. The droplet converges to a final equilibrium shape once the driving stresses inside the droplet fall below the yield stress. Scaling laws are presented for the final radius and complemented with an asymptotic analysis for shallow droplets. Moreover, numerical simulations using the volume-of-fluid method and a regularized constitutive law, and experiments with an aqueous solution of Carbopol are presented.
Cite
@article{arxiv.2010.02894,
title = {Spreading of viscoplastic droplets},
author = {Maziyar Jalaal and Boris Stoeber and Neil Balmforth},
journal= {arXiv preprint arXiv:2010.02894},
year = {2021}
}
Comments
18 pages, 12 figures