CFD-DEM simulation of fluid-solid flow of a tapered column separation bed
CFD-DEM simulation of fluid-solid flow of a tapered column separation bed作者机构:School of Chemical Engineering and TechnologyChina University of Mining & Technology
出 版 物:《International Journal of Mining Science and Technology》 (矿业科学技术学报(英文版))
年 卷 期:2015年第25卷第5期
页 面:855-859页
核心收录:
学科分类:083002[工学-环境工程] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 08[工学]
基 金:the National Key Basic Research Program of China(No.2012CB214904) the National Natural Science Foundation of China for Innovative Research Group(No.51221462) the National Natural Science Foundation of China(Nos.51304196,51134022,and 51174203) the Natural Science Foundation of Jiangsu Province of China(No. BK2012136) the Specialized Research Fund for the Doctoral Program of Higher Education(No.20120095130001)
主 题:Tapered column separation bed Waste printed circuit boards Computational fluid dynamics Discrete element method Fluid-solid flow
摘 要:Research on recycling waste Printed Circuit Boards(PCB) is at the forefront of preventing environmental pollution and finding ways to recycle *** Tapered Column Separation Bed(TCSB) is invented aiming at disposing the problem that fine particles of waste printed circuit boards cannot be separated efficiently so as to obtain further insight about the underlying mechanisms and demonstrate the separation feasibility in the tapered column separation *** this work,a Computational Fluid Dynamics(CFD) coupled with Discrete Element Method(DEM) model for two-phase flow has been extended to simulate the fluid-solid flow in the tapered column separation *** validity is demonstrated by its successful capturing the key features of particles flow pattern,velocity,the pressure distribution,the axial position with time and axial force for particles with different *** results show that the plastic particles and resin particles become overflow,while copper particles,iron particles and aluminum particles successively become underflow,with a discharge water flow rate of 1 m^3/h,an obliquity of 30°.The simulated results agree reasonably well with the experimental *** this equipment to separate waste PCBs is feasible,theoretically.