A Stokesian dynamics approach for simulation of magnetic particle suspensions

A4 Conference proceedings


Internal Authors/Editors


Publication Details

List of Authors: A. Sand, J.F. Stener, J.E. Carlson, B.I. Pålsson, M.O. Toivakka
Editors: Jon Wills
Publisher: Minerals Engineering International
Place: Falmouth
Publication year: 2015
Publisher: Minerals Engineering International, Minerals Engineering International
Book title: Proceedings of computational modelling '15


Abstract

The dynamic behaviour of μm-scale ferromagnetic particles in suspension is of interest for various mineral beneficiation processes. It is, however, difficult to experimentally study such processes at the particle-level. In these instances it can be advantageous to resort to suitable particle simulation methods.

Stokesian dynamics is a mesh-free numerical technique developed for suspensions of nm to mm size particles. The method inherently considers hydrodynamic interactions, but additional interaction models can be included depending on the system under investigation. We here present a Stokesian dynamics (SD) implementation, which allows for simulation of the motion of suspended magnetic particles in presence of an external magnetic field. The magnetic interaction model includes particle-field interactions as well as pairwise interactions between magnetised particles.

Simulations are compared with experiments using a laboratory-scale flow cell. The method is shown to be realistic for studying ferromagnetic suspensions in mineral processing applications, and can be useful in understanding and predicting the efficiency of mineral separation processes.

Last updated on 2020-26-02 at 04:48