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Simulations of model magnetorheological fluids in squeeze flow mode

Ruiz-López, J. A., Wang, Z. W., Hidalgo-Álvarez, R. and de Vicente, J. (2017) Simulations of model magnetorheological fluids in squeeze flow mode. Journal of Rheology, 61 (5). pp. 871-881. ISSN 0148-6055

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To link to this item DOI: 10.1122/1.4990641

Abstract/Summary

A particle-level simulation methodology is proposed to study the squeeze flow behavior of model magnetorheological (MR) fluids. The simulation algorithm takes into account Brownian motion and local field corrections to magnetic interactions of the particles. Simulation results obtained from using different initial configurations, including one single-particle-width chain per simulation box, random or lattice arrangements of preassembled single-particle-width chains as well as randomly dispersed particle suspensions, are compared with experimental data and predictions of a recently developed microscopic model. The assumption of single-particle-width chain structures in the systems has been shown to generate normal stresses larger than those found in experiments and the micromechanical model. However, much better agreement between the simulation and experimental results have been reached when using random initial configurations in the simulations.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical, Physical and Computational Sciences > Department of Mathematics and Statistics
ID Code:70790
Publisher:Society of Rheology

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