S. Benzarti and H. Mhiri and H. Bournot
Drag models for Simulation GasSolid Flow in the Bubbling Fluidized Bed of FCC Particles
111 - 116
2012
6
1
International Journal of Chemical and Molecular Engineering
https://publications.waset.org/pdf/12716
https://publications.waset.org/vol/61
World Academy of Science, Engineering and Technology
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 gassolid flow was simulated by
mean of a multifluid 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
interphase drag function (the drag model of Gidaspow, Syamlal and
OBrien 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 OBrien overestimated the drag force for
the FCC particles and predicted a greater bed expansion in
comparison to the EMMS drag model.
Open Science Index 61, 2012