Article

CFD simulation for two-phase mixing in 2D fluidized bed

International Journal of Advanced Manufacturing Technology (impact factor: 1.1). 01/2009; DOI:10.1007/s00170-008-1875-9 pp.1-4

ABSTRACT Two-phase (solid and gas) 2D fluidized bed reactor’s flow pattern was investigated. Computational fluid dynamics (CFD) simulation
results were compared with those obtained experimentally. The CFD simulation is carried out using commercial software “Fluent”.
Experiment is carried out in a fluidized bed containing spherical glass beads of diameter 300–350μm. Initial volume fraction
is fixed as 0.6. A multi-fluid Eulerian model incorporating the kinetic theory for solid particles was applied in order to
simulate the gas–solid flow. Momentum exchange coefficients are calculated using Syamlal–O’Brien drag function. The kinetic
energy lost during inter-particle collisions were characterized by specifying the restitution coefficient values from 0.9
to 0.99. The pressure drop and bed expansion ratio for various superficial velocities are compared with experimental results.

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Keywords

bed expansion ratio
 
CFD
 
CFD simulation
 
commercial software “Fluent”
 
Computational fluid dynamics
 
fluidized bed
 
Momentum exchange coefficients
 
multi-fluid Eulerian model incorporating
 
pressure drop
 
restitution coefficient values
 
solid particles
 
spherical glass beads
 
various superficial velocities
 

M. Muthu Kumar