Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 429896
Title Modeling migration in sheared bidisperse suspensions using an effective termperature
Author(s) Sman, R.G.M. van der; Vollebregt, H.M.; Boom, R.M.
Source Faraday Discussions 158 (2012). - ISSN 1359-6640 - p. 89 - 103.
Department(s) Food Technology
Food Process Engineering
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) pressure-driven flow - concentrated suspensions - polydisperse suspensions - numerical simulations - self-diffusion - fluidized beds - shear-flow - spheres - sedimentation - instabilities
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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