Influence of rolling friction on single spout fluidized bed simulation

作     者：Christoph Goniva Christoph Kloss Niels G. Deen Johannes A.M.Kuipers Stefan Pirker 

作者机构：Christian-Doppler Laboratory on Particulate Flow ModellingJohannes Kepler UniversityLinz Austria DCS Computing GmbHLinz Austria Christian-Doppler Laboratory on Particulate Flow Modelling Johannes Kepler UniversityLinz Austria Department of Chemical Engineering and Chemistry Eindhoven University of TechnologyEindhovenThe Netherlands Department of Chemical Engineering and ChemistryEindhoven University of TechnologyEindhovenThe Netherlands Christian-Doppler Laboratory on Particulate Flow ModellingJohannes Kepler UniversityLinzAustria Institute of Fluid Mechanics and Heat Transfer Johannes Kepler UniversityLinzAustria 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2012年第10卷第5期

页      面：582-591页

核心收录：

学科分类：080706[工学-化工过程机械] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：the community of CFDEM project (2011) for giving important input and contributions to the development of this open source project the C.D. Research Association,the Federal Ministry of Economy,Family and Youth and the National Foundation for Research,Technology and Development 

主　　题：CFD DEMOpen sourceRolling frictionSpout fluidized bedNon sphericity 

摘      要：In this paper we study the effect of rolling friction on the dynamics in a single spout fluidized bed using Discrete Element Method （DEM） coupled to Computational Fluid Dynamics （CFD）. In a first step we neglect rolling friction and show that the results delivered by the open source CFD-DEM framework applied in this study agree with previous simulations documented in literature. In a second step we include a rolling friction sub-model in order to investigate the effect of particle non-sphericity. The influence of particle-particle as well as particle-wall rolling friction on the flow in single spout fluidized bed is studied separately. Adequate rolling friction model parameters are obtained using first principle DEM simulations and data from literature. Finally, we demonstrate the importance of correct modelling of rolling friction for coupled CFD-DEM simulations of spout fluidized beds. We show that simulation results can be improved significantly when applying a rolling friction model, and that experimental data from literature obtained with Positron Emission Particle Trackin~ fPEPT） technique can be satisfactorily reoroduced.