变径液固流化床单个颗粒运动模拟  

Simulation of Single Particle Motion in Tapered Diameter Liquid-solid Fluidized Bed

作　　者：伍玲玲[1] 胡林[1] 张志军[1] 喻清[1,2] 

机构地区：[1]南华大学核资源工程学院,湖南衡阳421001 [2]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《南华大学学报（自然科学版）》2017年第2期13-15,24,共4页Journal of University of South China：Science and Technology

基　　金：国家安全生产监督管理总局资助项目(hunan-0011-2016AQ);湖南省自然科学基金项目(2017JJ3274);湖南省教育厅重点项目(17A84);湖南省教育厅资助项目(15C1189)

摘　　要：变径液固流化床内单个颗粒运动过程的研究对整个流场分析具有重要的作用.通过Fluent-EDEM耦合计算,对变径液固流化床内单个颗粒运动行为进行了数值模拟.结果表明:不同密度颗粒进入分选区后,分别具有不同的运动轨迹,能够实现按密度分离,模拟分选效果较好;不同密度颗粒轴向速度表现为先是在短时间内迅速增加,达到一定速度后,开始逐渐减小趋势;将模拟所得单个颗粒轨迹与轴向速度值分别与高速动态拍摄所得值比较,吻合较好.The study of the motion of individual particles in tapered diameter fluidized bed has an important effect on the whole flow field analysis.The single particle motion in tapered diameter liquid-solid fluidized bed were researched by fluent-EDEM coupling simulation.The results showed that different density particles into the sorting area,respectively,with different trajectories,can be separated by density.The axial velocity of the particles with different densities increased first in a short period of time,and then decreased gradually after reaching a certain speed.The simulated results of the single particle trajectory and the axial velocity agree well with those obtained by high-speed dynamic photography.

关 键 词：变径液固流化床 单个颗粒 Fluent-EDEM 

分 类 号：TD455[矿业工程—矿山机电]