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Volume 158, 2012
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Model for particle migration in bidisperse suspensions by use of effective temperature

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Abstract

A model for the particle migration in a bidisperse flowing suspension is proposed and compared to experimental data. A mixture formulation, describing the suspension velocity and pressure and the concentrations of two solid fractions is derived from a multi-fluid model. In the multi-fluid model the liquid phase and both dispersed phases are interpenetrating phases. The closure relations are based on a mean field approach extending closure relations of a monodisperse suspension. The model is used to predict segregation based on particle size in channel flow where the particles are subjected to Brownian motion and shear-induced migration. The comparison of the model results with experimental data shows that particle migration is predicted well by the given formulation.

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Publication details

The article was received on 23 Feb 2012, accepted on 17 Apr 2012 and first published on 20 Apr 2012


Article type: Paper
DOI: 10.1039/C2FD20035J
Citation: Faraday Discuss., 2012,158, 89-103
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    Model for particle migration in bidisperse suspensions by use of effective temperature

    H. M. Vollebregt, R. G. M. van der Sman and R. M. Boom, Faraday Discuss., 2012, 158, 89
    DOI: 10.1039/C2FD20035J

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