Coupled DEM-CFD simulations have been performed to study the hydrodynamics of a Wurster granulator on the scale of individual particles. Based on extensive material tests, the collision behaviour of dry "Gamma"-Al2O3 particles is identified and incorporated into the model. The effect of process parameters like air flow rate and geometry details like the Wurster position is studied. Based on a physical description of the material properties, an effective tool for design and scale-up of a Wurster granulator is obtained.
Lennart Fries; Sergiy Antonyuk, Stefan Heinrich; and Stefan Palzer, "DEM-CFD MODELLING OF A FLUIDIZED BED SPRAY GRANULATOR" in "The 13th International Conference on Fluidization - New Paradigm in Fluidization Engineering", Eds, ECI Symposium Series, Volume RP6 (2010). http://dc.engconfintl.org/fluidization_xiii/96