Abstract:

Bubbling behaviors in a two-dimensional single jet bubbling fluidized bed was numerically simulated based on a two-fluid model by Fluent software package. The constant particle viscosity model（CPV）and the model based on Kinetic Theory of Granular Flow（KTGF）were selected. A comparative study on two kinds of solid-phase viscosity models was implemented by calculating the formation of bubbles，gas leakage ratio，equivalent bubble diameter and bubble rise velocity. The model of Lun et al and that of Hrenya and Sinclair modules that based on KTGF were written especially by the authors. By comparing with the experimental data in literature，it was reflected that KTGF models are generally better than CPV models. Especially，simulation results with the model of Lun et al and that of Hrenya and Sinclair fitted the best to experimental results.