Title: Flow Behavior of Cohesive and Aspherical Grains


Abstract: Particle simulations via the discrete element method (DEM) have been widely used to model a range of particulate processes and enable detailed analysis of flow and easily explore a range of material properties and operating conditions. These insights can promote innovation and reduce inefficiencies, thus cutting costs associated with additional experimentation and scale-up studies. Recent advances in DEM particle models have significantly expanded the range of particulate systems and processes that can be described. Some of these advances include the modeling of particle mixes with wide variation in particle size, particle roughness, particle friction and particle cohesivity due to liquid bridging forces. Other model extensions include descriptions for particle aspericity that can also allow for particle breakage and flexibility. All of these complexities considerably affect the processing behavior of the particles. This presentation will focus on the flow behavior of cohesive and aspherical particles under shear, as well as their discharge rates from hoppers.