CFD-DEM and TFM Simulations of Spouted Bed

Abstract

This research compared TFM and CFD-DEM models for simulation of a slot-rectangular spouted bed. Limits, drawbacks and benefits of the models were discussed and compared. Results of the two models were compared with available experimental data in literature. Axial distributions of the axial component of particle velocity and solids hold-up at the center of the spout, as well as the radial distributions of the axial component of particle velocity at four heights were found and compared with experimental data. Similar increasing- constant-decreasing trends were observed for both axial velocity and hold-up distributions in CFD and CFD- DEM simulations. Decreasing-constant trends were observed for radial distributions of particle velocity at all heights in CFD and CFD-DEM simulations. Simulation times were also compared at equal condition for the two models. It was found that for all the studied velocity and voidage distributions, CFD-DEM model shows better accuracies.