Experiment and Numerical Simulation on Slug Fluidization of Geldart D Particles
YANG Fu-jun,WANG Jia-jun,GU Xue-ping,FENG Lian-fang
State Key Laboratory of Chemical Engineering (Polymer Reaction Engineering Division),
Zhejiang University
State Key Laboratory of Chemical Engineering (Polymer Reaction Engineering Division),
Abstract：The fluidization of mono-diameter Geldart D particles was experimentally studied and numerically simulated with the two-fluid model based on the granular kinetic theory. The simulation results of voidage distribution show the clear characterization of slug fluidization. The predictions of bed expansion ratio and power spectrum density of pressure fluctuation calculated using FFT method are in agreement with those from experiments. Analysis on Froude number and particle kinetic energy is also carried out. The pseudo-periodicity of Froude number and particle kinetic energy against time reflects exactly the gas-solid heterogeneous flow structure and motion of large gas bubbles in slug fluidized bed.
2005, Vol. 5 
