This is a Preprint and has not been peer reviewed. This is version 1 of this Preprint.
![Non-linear multiphase flow in hydrophobic porous media](/media/repos/1/40aab2d6-4c12-4d57-a93c-f005a57ea48c.jpg)
Downloads
Authors
Abstract
Multiphase flow in porous materials is conventionally described by an empirical extension to Darcy’s law which assumes that the pressure gradient is proportional to flow rate. Through a series of two-phase flow experiments, we demonstrate that even when capillary forces are dominant at the pore scale, there is a non-linear intermittent flow regime with a power-law dependence between pressure gradient and flow rate. Energy balance is used to predict accurately the start of the intermittent regime in hydrophobic porous media. The pore-scale explanation of the behaviour based on the periodic filling of critical flow pathways is confirmed through 3D micron-resolution X-ray imaging.
DOI
https://doi.org/10.31223/X5V63C
Subjects
Engineering, Physical Sciences and Mathematics
Keywords
multiphase flow, porous media, non-linear flow, intermittent flow, energy balance
Dates
Published: 2021-11-08 09:13
Last Updated: 2021-11-08 17:13
There are no comments or no comments have been made public for this article.