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

Author

Hu, Xiaoying ; Zhang, Junjiao ; Dong, Changqing ; Yang, Yongping

Author_Institution

Nat. Eng. Lab. for Biomass Power Generation Equip., North China Electr. Power Univ., Beijing, China

fYear

2010

fDate

28-31 March 2010

Firstpage

1

Lastpage

4

Abstract

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.

Keywords

bubbles; drag; elasticity; flow simulation; fluidised beds; granular flow; granular materials; numerical analysis; bed material height; bubble diameter size; dense gas-solid fluidized bed simulation; drag force model; gas-solid flow; granular elasticity; numerical simulation; phase mixing; restitution coefficient; superficial velocity; time step effect; two-fluid model; Chemical industry; Combustion; Computational modeling; Drag; Elasticity; Fluidization; Inductors; Solids; Temperature; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4812-8

Electronic_ISBN

978-1-4244-4813-5

Type

conf

DOI

10.1109/APPEEC.2010.5449532

Filename

5449532