Rotation characteristic and granular temperature analysis in a bubbling fluidized bed of binary particles

查看全文 作　　者：Tianyu [1]Wang;Yurong [1]He;Shengnan [1]Yan;Dong Rip [2]Kim

机构地区：[1]Department of Power Engineering,Harbin Institute of Technology;[2]Department of Mechanical Engineering,Hanyang University

出　　处：《Particuology》索引2015年第13卷第1期,共13页

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51322601);the National Natural Science Foundation of China-China National Petroleum Corporation Joint Fund of Petrochemical Engineering(U1162122);the Fundamental Research Funds for the Central Universities (Grant No.HIT.BRETIV.201315) 摘　　要：In this work,a discrete particle model(DPM) was applied to investigate the dynamic characteristics in a gas-solid bubbling fluidized bed of binary solid particles.The solid phase was simulated by the hardsphere discrete particle model.The large eddy simulation(LES) method was used to simulate the gas phase.To improve the accuracy of the simulation,an improved sub-grid scale(SGS) model in the LES method was also applied.The mutative Smagorinsky constant case was compared with the previously published experimental data.The simulation by the mutative Smagorinsky constant model exhibited better agreement with the experimental data than that by the common invariant Smagorinsky constant model.Various restitution coefficients and different compositions of binary solids were investigated to determine their influences on the rotation characteristics and granular temperatures of the particles.The particle translational and rotational characteristic distributions were related to certain simulation parameters. 关键词：固体颗粒鼓泡流化床温度分析二进制动特性粒子模型大涡模拟实验数据

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Rotation characteristic and granular temperature analysis in a bubbling fluidized bed of binary particles

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