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

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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.
Original languageEnglish
Title of host publicationProceedings of the 6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion, 11 -15 July 2009, Xian
PublisherAmerican Institute of Physics
Pages766-774
ISBN (Print)978-073540744-2
DOIs
Publication statusPublished - 2010

Publication series

NameAIP Conference Proceedings
Volume1207
ISSN (Print)0094-243X

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