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Simulation of Dense Gas-Solid Fluidized Bed Based on Two-Fluid Model

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4 Author(s)
Xiaoying Hu ; Nat. Eng. Lab. for Biomass Power Generation Equip., North China Electr. Power Univ., Beijing, China ; Junjiao Zhang ; Changqing Dong ; Yongping Yang

Numerical simulation of gas-solid flow in fluidized bed has been carried out based on two-fluid model (TFM) in the paper. The influence of different height of bed material, superficial velocity, restitution coefficient of granular elasticity, drag model and time step calculated on phase mixing and bubbles appeared was analyzed and investigated. The results showed that by using the same drag model, the fluidization was improved along with the increase of bed material, superficial velocity and restitution coefficient of granular elasticity; different bubble diameter size can be obtained by using different drag force model; the effect of time step calculated on the diameter of bubbles in bed was slightly.

Published in:

Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific

Date of Conference:

28-31 March 2010