The role of particle-particle interactions in bubbling gas-fluidized beds of Geldart A particles: A discrete particle study
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 gasfluidized 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.
Geldart A particles Fluidization Multiphase flow Discrete particle simulation Particleparticle interaction Bubbling fluidized beds
J.W.Wang M.A.van der Hoef J.A.M.Kuipers
Faculty of Science and Technology, University of Twente, P.O.Box 217,7500 AE Enschede, The Netherlands
国际会议
西安
英文
766-774
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）