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Mathematical model and numerical simulation of the liquid fluidization of polydisperse solid particle mixtures |
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| Authors: | S. Berres R. Bürger E.M. Tory |
| Affiliation: | (1) Institut für Angewandte Analysis und numerische Simulation, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany;(2) Professor Emeritus, Department of Mathematics and Computer Science, Mount Allison University, E4L 1E8 Sackville, NB, Canada |
| 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 the fluidization 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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