Preprint 2002-045

Mathematical Model and Numerical Simulation of Liquid Fluidization of Polydisperse Solid Particle Mixtures

S. Berres, R. Bürger, and E. M. Tory

Abstract: A mathematical model for the fluidization of polydisperse suspensions is developed. The stationary concentration configurations for a given fluidizing velocity are analyzed and a mixing condition for bed inversion is derived. A central finite difference scheme is applied to the simulation of a bidisperse suspension. The numerical simulations agree with the experimentally reported qualitative behaviour of fluidized suspensions such as bed expansion and bed inversion.

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S. Berres, <>
R. Bürger , <>
E. M. Tory
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<> September 5 2002.

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