Preprints

Filtering by Subject: Complex Fluids

Fluid invasion dynamics in porous media with complex wettability and connectivity

Arjen Mascini, Marijn Boone, Stefanie Van Offenwert, Shan Wang, Veerle Cnudde, Tom Bultreys

Published: 2021-06-17
Subjects: Chemical Engineering, Complex Fluids, Earth Sciences, Fluid Dynamics, Hydrology, Materials Science and Engineering, Other Materials Science and Engineering, Petroleum Engineering, Transport Phenomena

Fluid invasion into porous materials is very common in natural and industrial processes. The fluid invasion dynamics in simple pore networks are governed by a global balance of capillary, viscous and inertial forces. However, significant local variability in this balance may exist inside natural, heterogeneous porous materials. Here, we imaged slow fluid intrusion in two sister samples of a [...]

Imbibition in porous media: correlations of displacement events with pore-throat geometry and the identification of a new type of pore snap-off

Kamaljit Singh, Tom Bultreys, Ali Q. Raeini, Mosayeb Shams, Martin J. Blunt

Published: 2019-08-23
Subjects: Chemical Engineering, Civil and Environmental Engineering, Complex Fluids, Dynamics and Dynamical Systems, Engineering, Engineering Science and Materials, Environmental Engineering, Materials Science and Engineering, Mechanics of Materials, Petroleum Engineering, Transport Phenomena

The displacement of a non-wetting fluid by a wetting fluid in porous media, called imbibition, is important in many natural and industrial processes. During imbibition, the wetting fluid invades the pore space through a series of competitions between piston-like displacement, film and corner flow, snap-off, pore bypassing and trapping. Our understanding of these fundamental pore-scale [...]

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