Eulerian-Eulerian Simulations of Segregating Binary Gas-Solid Fluidized Beds
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Mirella Coroneo
,
Luca Mazzei
Abstract
This work is aimed at investigating a bidisperse gas-solid fluidized bed by Computational Fluid Dynamics simulations. The selected simulation approach is based on the Eulerian unsteady equations of motion for each phase coupled with a model based on the granular kinetic theory. The effect of grid size and time step on axial segregation of two different binary solid mixtures is investigated. The analysis of the simulation results, which strengthen previous findings with new data, confirms that firm conclusions on the capacity of the CFD model to predict the segregation dynamics in fluidized beds can be drawn only after careful verification of numerical uncertainties at the operating conditions under investigation. The relationship between the average absolute error, which is evaluated by comparison of the simulation results with literature experimental data, and a global parameter, which takes into account both the operating conditions and the spatial and temporal resolutions, is shown.
©2012 by De Gruyter
Articles in the same Issue
- Frontmatter
- On Time-Averaged CFD Modeling of Circulating Fluidized Beds
- Eulerian-Eulerian Simulations of Segregating Binary Gas-Solid Fluidized Beds
- A Study on Application of Smoothed Particle Hydrodynamics to Multi-Phase Flows
- Three-Phase CFD-Model for Trickle Bed Reactors
- Non-Modal Instability of Core-Annular Flow
- On the Mutual Effect of the Turbulent Dispersion Model and Thermophoresis on Nanoparticle Deposition
- CFD Predictions of Sufficient Suspension Conditions in Solid-Liquid Agitated Tanks
Articles in the same Issue
- Frontmatter
- On Time-Averaged CFD Modeling of Circulating Fluidized Beds
- Eulerian-Eulerian Simulations of Segregating Binary Gas-Solid Fluidized Beds
- A Study on Application of Smoothed Particle Hydrodynamics to Multi-Phase Flows
- Three-Phase CFD-Model for Trickle Bed Reactors
- Non-Modal Instability of Core-Annular Flow
- On the Mutual Effect of the Turbulent Dispersion Model and Thermophoresis on Nanoparticle Deposition
- CFD Predictions of Sufficient Suspension Conditions in Solid-Liquid Agitated Tanks
