An Eulerian-Lagrangian Modeling of Fluidized Bed
The particle motions in a fluidized bed were numerically simulated using a Eulerian-Lagrangian model.The solid phase was modelled via the Discrete Element Method (DEM) while the hydrodynamic model of the fluid phase was based on the volume-averaged Navier-Stokes equations.A fluid density-based buoyancy (FDB) model was adopted to calculate the solid-fluid interaction force.In this paper, the complex ”four way coupled” interaction as proposed by Elghobashi in 1991 was modelled, namely the dominant effect of gas phase on the dispersed particles,the back influence of the particle phase on the gas phase, and interactions between particles such as collision,agglomeration and break-up.A stable succession of bubble formation and disappearance was captured.Obtained pressure drop and interparticle contact number had a good agreement with those reported in previous reference.
Eulerian-Lagrangian DEM FDB Fluidized bed
Zhang Hao Tan Yuan-Qiang Yang Dong-Min Francesc Xavier Trias Sheng Yong Assensi Oliva
School of Mechanical Engineering , Xiangtan University, Hunan 411105, China;Heat and Mass Transfer T School of Mechanical Engineering , Xiangtan University, Hunan 411105, China Heat and Mass Transfer Technological Center, Technical University of Catalonia, Terrassa 08222, Spai School of Civil Engineering, University of Leeds, Leeds LS29JT, UK
国内会议
大连
英文
659-663
2012-09-01（万方平台首次上网日期，不代表论文的发表时间）