Abstract

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Gas-liquid-solid fluidized bed technique has emerged recently as one of the most promising one for three phase operations involved in chemical, biochemical, petrochemical, pharmaceutical processing industries. Out of the fundamental characteristics of a three-phase fluidized bed, the gas hold up and liquid hold up behaviours have been studied extensively. Considering the various researchers’ findings, keeping in view of the comparison, these two characteristics have been studiedfor analysing the performance of a three-phase fluidized bed. In the present work STAR-CCM+ has been used to study gas-liquid-solid fluidization for CFD simulation has been carried out for a column having the dimension of 1.88 m height and 0.1 m diameter bed comprising glass bead as solid particle of size 2.18 mm. The present paper deals with the CFD analysis of these two characteristics using CD-Adapco engineering commercial STAR-CCM+ CFD software for generation of a 3D fine grid. In the present work air has been considered as the gas, water as the liquid to be passing through the base of the fluidized bed with different velocities.

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