Polytechnic University of Valencia Congress, 21st International Drying Symposium

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Modeling of Particle Behavior in a Wurster Fluidized Bed: Coupling CFD-DEM with Monte Carlo
Zhaochen Jiang, Christian Rieck, Andreas Bück, Evangelos Tsotsas

Last modified: 26-12-2018

Abstract


CFD-DEM approach is applied to investigate circulation motion of particles in a mono-disperse system under both dry and wetting conditions. Good agreement between simulation results and measurement data is observed, in terms of cycle time and residence time in dry condition. The deposition of droplets on the particle surface is modeled by a Monte Carlo approach. The influence of cohesion forces on the macroscopic particle circulation is discussed. In addition, information about coating coverage, the layer thickness and particle size distribution can be predicted by this integrating approach.

Keywords: CFD-DEM; Wurster coater; Monte Carlo; cohesion force; residence time.


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