Influences of geometric factors on CFD results of a draft tube cylindrical spouted bed
by Seyyed Hossein Hosseini
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 16, No. 2, 2016

Abstract: The effect of some geometric factors, namely, draft tube diameter and entrainment height was investigated by the two-fluid model (TFM) applying the kinetic theory of granular flow. The model proposed was found to be in a good agreement with the experimental measurements in a wide range of gas velocities and different draft tube diameters as well as entrainment heights. The influence of particle-wall restitution coefficient in the small and large draft tube diameters was examined. Accordingly, different values of e_w were evaluated in the draft tubes. It was observed that the model predictions for particle behaviour through the small draft tube are sensitive to the values of e_w, while the sensitivity declines and disappears for large draft tube. The particle behaviour for various geometric factors was predicted by the model.

Online publication date: Sat, 05-Mar-2016

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