The role of particle-particle interactions in bubbling gas-fluidized beds of Geldart A particles: A discrete particle study


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Wang, Junwu and Hoef, M.A. van der and Kuipers, J.A.M. (2009) The role of particle-particle interactions in bubbling gas-fluidized beds of Geldart A particles: A discrete particle study. In: 6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion, 11-15 July 2009, Xi'an, China.

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Abstract:Discrete particle simulations are by now well established as an effective tool to study the mechanics of complex gas-solid flows in gas-fluidized beds. In this study, a state-of-the-art discrete particle model is used to explore the role of particle-particle interactions in bubbling gas-fluidized beds of Geldart A particles. We find that the particle-particle interactions, including inelastic particle-particle collision; inter-particle friction and slightly cohesive forces, only have a negligible effect on the hydrodynamics of bubbling gas-fluidized beds of Geldart A particles. This is due to the fact that only a very small fraction of the energy input is dissipated during the non-ideal particle-particle interaction. We finally show that the selected drag correlation model significantly affects the bed hydrodynamics.
Item Type:Conference or Workshop Item
Additional information:Paper No. MN-22
Faculty:
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/67392
Official URL:http://dx.doi.org/10.1063/1.3366461
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