Comprehensive comparison of pore-scale models for multiphase flow in porous media


Title

Comprehensive comparison of pore-scale models for multiphase flow in porous media

Publication Type
Journal Article
Year of Publication
2019
Journal
Proceedings of the National Academy of Sciences
Volume
116
Issue
s
Pagination
13799 – 13806
Date Published
Sep-07-2019
Publication Language
eng
Citation Key
3531
ISSN
0027-8424
Abstract

Multiphase flows in porous media are important in many natural and industrial processes. Pore-scale models for multiphase flows have seen rapid development in recent years and are becoming increasingly useful as predictive tools in both academic and industrial applications. However, quantitative comparisons between different pore-scale models, and between these models and experimental data, are lacking. Here, we perform an objective comparison of a variety of state-of-the-art pore-scale models, including lattice Boltzmann, stochastic rotation dynamics, volume-of-fluid, level-set, phase-field, and pore-network models. As the basis for this comparison, we use a dataset from recent microfluidic experiments with precisely controlled pore geometry and wettability conditions, which offers an unprecedented benchmarking opportunity. We compare the results of the 14 participating teams both qualitatively and quantitatively using several standard metrics, such as fractal dimension, finger width, and displacement efficiency. We find that no single method excels across all conditions and that thin films and corner flow present substantial modeling and computational challenges.

Short Title
Proc Natl Acad Sci USA