|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||D-46: DEM Simulation of Dispersion of Cohesive Particles by Spontaneous Inter-particle Percolation in a 3D Random Packed Bed
||Heng Zhou, Shengli Wu, Mingyin Kou, Shun Yao, Bingjie Wen, Kai Gu, Feng Chang
|On-Site Speaker (Planned)
The present work systematically studies the dispersion of cohesive particles by spontaneous inter-particle percolation in a packed bed using discrete element method (DEM). The results indicate that the vertical velocity of percolating particles increases with increasing the cohesive force from 0 to 2mg. While for a higher cohesive force, e.g. fc=8mg, insufficient percolation occurs and percolating particles stick in the packed bed. Percolating particles in the packed bed shows a diffusivity for the cases of smaller cohesive force, and the diffusion property can be described by Einstein-Smoluchowski equation. The transverse dispersion of fc= 2mg is smaller than that of fc =0, while the longitudinal dispersion becomes larger when the cohesive force changes from 0 to 2mg. The study provides a fundamental understanding on dispersion behaviour of cohesive particles in a packed bed, and is useful for processes understanding and optimization in cohesive particles handling and mixing.
||Planned: None Selected