TY - JFULL AU - S. Benzarti and H. Mhiri and H. Bournot PY - 2012/2/ TI - Drag models for Simulation Gas-Solid Flow in the Bubbling Fluidized Bed of FCC Particles T2 - International Journal of Chemical and Molecular Engineering SP - 110 EP - 116 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/12716 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 61, 2012 N2 - In the current work, a numerical parametric study was performed in order to model the fluid mechanics in the riser of a bubbling fluidized bed (BFB). The gas-solid flow was simulated by mean of a multi-fluid Eulerian model incorporating the kinetic theory for solid particles. The bubbling fluidized bed was simulated two dimensionally by mean of a Computational Fluid Dynamic (CFD) commercial software package, Fluent. The effects of using different inter-phase drag function (the drag model of Gidaspow, Syamlal and O-Brien and the EMMS drag model) on the model predictions were evaluated and compared. The results showed that the drag models of Gidaspow and Syamlal and O-Brien overestimated the drag force for the FCC particles and predicted a greater bed expansion in comparison to the EMMS drag model. ER -