Numerical Analysis of Multi-Particulate Flow Behaviour in CFB Riser Coupled with a Kinetic Theory

In this work, a three-dimensional CFD model for the gas–solid flow of two different particle sizes in CFB riser coupled with kinetic theory (KT) has been developed. The properties solid phases are calculated using proposed multi-particle theory. is implemented commercial software CFX4.4. current model, one gas phase and used. However, generalised carrier N number to enable realistic size distribution system. momentum, volume fraction granular temperature equations solved each individual into through user-defined functions (UDFs). k-ε turbulence used simulating circulating fluidised bed model. For verification, simulation results obtained new KT were compared experimental data, then was further analysis. It found that can be calculate systems particles and/or densities, removing assumptions previous models required all an equal mass, density.