Simulation of Particle Segregation Behavior in Bubbling Fluidized Bed

Particle-particle drag is one of the most important influencing factors of the fluid dynamic behavior in a bubbling fluidized bed.Based on an Euler-Euler gas-solid two phase model,a particle-particle drag model considering particle slope coefficient of segregation is presented for simulation of the bubbling fluidized bed with two different sizes particles and a uniform gas inlet.Comparing the simulating results with Owoyemi's experimental and numerical results,it can be seen that the particle-particle drag model,considering the particle slope coefficient of segregation,can well predict and analyze the characteristics of particle segregation in the bubbling bed.