Abstract:
Hydrodynamics of air-urea (gas-solid) flow in fluidized bed coater is studied using the
commercial CFD package ANSYS FLUENT® 18.0 on 2D and 3D geometry the multiphase
behavior of air-urea flow is simulated using CFD. The model uses the EE-TFM approach in
combination with kinetic theory of granular flows. In this study, three different drag models
GP, SMB and mod SMB are used. These drag models are used to determine the interfacial
phenomena between different phases. It is detected that the drag models have a substantial
effect on the air-urea flow behavior and the change in dynamics of urea particles with influence
of superficial gas velocity is studied. The modified Syamlal O Brine (modified SMB) shows
better agreement with the homogeneous fluidization as compared to Gidaspow (GP) and
Syamlal O Brine (SMB) drag model.
