Ferrofluid magnetoviscous control of wall flow channeling in porous media--颗粒学报PARTICUOLOGY

Larachi, F., & Desvigne, D. (2007). Ferrofluid magnetoviscous control of wall flow channeling in porous media. China Particuology, 5(1), 50–60. https://doi.org/10.1016/j.cpart.2006.12.001

Ferrofluid magnetoviscous control of wall flow channeling in porous media

Faïçal Larachi ^a *, Damien Desvigne ^a

a Department of Chemical Engineering, Laval University, Que. G1K 7P4, Canada

10.1016/j.cpart.2006.12.001

Volume 5, Issues 1–2, February–April 2007, Pages 50-60

Received 18 April 2006, Accepted 5 December 2006, Available online 6 June 2007.

E-mail: faical.larachi@gch.ulaval.ca

Highlights

Abstract

We analyzed the phenomenon of ferrofluid magnetoviscosity in high-permeability wall-region non-magnetic porous media of the Müller kind. After upscaling the pore-level ferrohydrodynamic model, we obtained a simplified volume-average zero-order axisymmetric model for non-Darcy non-turbulent flow of steady-state isothermal incompressible Newtonian ferrofluids through a porous medium experiencing external constant bulk-flow oriented gradient magnetic field, ferrofluid self-consistent demagnetizing field and induced magnetic field in the solid. The model was explored in contexts plagued by wall flow maldistribution due to low column-to-particle diameter ratios. It was shown that for proper magnetic field arrangement, wall channeling can be reduced by inflating wall flow resistance through magnetovisco-thickening and Kelvin body force density which reroute a fraction of wall flow towards bed core.

Graphical abstract

Keywords

Ferrofluid; Magnetosviscosity; Porous medium; Volume-average ferrohydrodynamic model; Kelvin body force; Spin-vorticity coupling

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