(69c) Discrete Element Method (DEM) Investigation of Particle Properties on Bulk Powder Flowability: Toward a Particle Calibration Library for Pharmaceutical Materials
World Congress on Particle Technology
Tuesday, April 24, 2018 - 4:00pm to 4:15pm
In this work, the shear flow of particles in a periodic section of an annular ring shear tester is simulated to examine the effects of various particle properties on the bulk flow behavior. The impact of particle shape along with coefficients of restitution, sliding and rolling friction, and cohesion are examined through thousands of cloud-based DEM simulations. The simulated bulk flow behavior spans the range of experimental results determined for a wide array of typical pharmaceutical materials. Thus, this extensive simulation dataset provides a prerequisite to a potential DEM particle calibration utilizing a lookup table for contact parameter values. Simulated and experimental shear tester results will be presented with a focus on the link between the DEM input parameters and macro-scale bulk flow measurements. Further, an outlook for extension to calibration of DEM particle models will be discussed.