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Trapping patterns during capillary displacements in disordered media

Published online by Cambridge University Press:  06 January 2022

Fanli Liu
Affiliation:
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China
Moran Wang*
Affiliation:
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China
*
Email address for correspondence: mrwang@tsinghua.edu.cn

Abstract

We investigate the impact of wettability distribution, pore size distribution and pore geometry on the statistical behaviour of trapping in pore-throat networks during capillary displacement. Through theoretical analyses and numerical simulations, we propose and prove that the trapping patterns, defined as the percentage and distribution of trapped elements, are determined by four dimensionless control parameters. The range of all possible trapping patterns and how the patterns are dependent on the four parameters are obtained. The results help us to understand the impact of wettability and structure on trapping behaviour in disordered media.

Type
JFM Papers
Copyright
© The Author(s), 2022. Published by Cambridge University Press

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