Dynamics of compression-driven gas-liquid displacement in a capillary tube
Fluid Dynamics
2023-04-28 v2 Soft Condensed Matter
Abstract
We study two-phase displacement via the steady compression of an air reservoir connected to an oil-filled capillary tube. Our experiments and modelling reveal complex displacement dynamics depending on compression rate and reservoir volume that, for large reservoirs, depend on a single dimensionless compressibility number. We identify two distinct displacement regimes, separated by a critical value of the compressibility number. While the subcritical regime exhibits quasi-steady displacement after an initial transient, the supercritical regime exhibits burst-like expulsion.
Keywords
Cite
@article{arxiv.2112.12898,
title = {Dynamics of compression-driven gas-liquid displacement in a capillary tube},
author = {Callum Cuttle and Christopher W. MacMinn},
journal= {arXiv preprint arXiv:2112.12898},
year = {2023}
}