شماره ركورد كنفرانس :
4518
عنوان مقاله :
Validation of CFD-DEM Model for Size Segregation of Binary Mixtures in Gas-Solid Fluidized Beds
Author/Authors :
Hamid Reza Norouzi , Navid Mostoufi Process Design and Simulation Research Center, Oil and Gas Processing Centre of Excellence, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran , Rahmat Sotudeh Gharebagh
كليدواژه :
Discrete Element Method , Size Segregation , Binary Mixture , Fluid Dynamics
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
A numerical study on segregation behavior of binary mixtures in gas-solid fluidized beds was
carried out in this work. The gas phase was modeled using the continuum theory and the solid
phase was modelled by the discrete element method. Results of the model were validated by the
experimental data on the extent of segregation published in literature. Simulation results are in
good agreement with experimental data at different solid mixtures, initial bed heights and
superficial gas velocities. Results showed that rearrangement and consequently segregation of
particles potentially occur in loose regions of the bed. Increasing the gas velocity and mass
fraction of small particles enhance the mixing of particles while decreasing the bed height
promotes the segregation of particles in the bed
