Paper presented at the 6th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 30 June - 2 July, 2008.
This work presents a computational study of flow behaviour
in a bubbling fluidized bed. The model is developed by using
the commercial CFD code Fluent 6.3. The model is based on an
Eulerian description of the gas and the particle phase. Different
drag models are used and compared. The computational results
are validated against experimental results.
The experimental data are based on measurements
performed by Britt Halvorsen in 2004. The dimension of the
lab-scale fluidized bed is 0.25x0.25x2.00 m. The simulations
are performed with spherical particles with mean particle size
of 154 mm and density 2485 kg/m3. The superficial gas velocity
is 0.133 m/s. Computational results are compared mutually, as
well as against experimental data. The discrepancies are
discussed.
