Multi-scale Model Development of Particulate Processes 

In scaling up to the pilot-plant or industrial scale it is important to formulate a formal link to the macro-scale phenomena (critical quality attributes of particles) by incorporating micro-scale phenomena (particle velocities, collision frequency), meso-scale phenomena (particle aggregation, breakage etc.), together with effect of process parameters, material properties and equipment geometry. We use a combination of population balances, discrete element models and computational fluid dynamics to elucidate and study this behavior. 

Twin Screw Granulation
Twin Screw Granulation

Snapshots of DEM simulations after as steady-state is reached for configurations with a 90 deg offset angle of different kneading elements. Particles are colored according to their compartment.

press to zoom
Drum Granulation
Drum Granulation

DEM image of particles at 5 s colored by liquid fraction using a PBM time interval of 0.01 s

press to zoom
Fluid Bed Granulation
Fluid Bed Granulation

Model geometry and mesh of the fluid bed granulator

press to zoom

Multi-scale DEM-PBM Coupled Simulation of Twin Screw Granulation Processes

DEM Simulation of Drum Granulation Processes

List of Publications from this Research Area: