基于CFD-DEM方法的柱状颗粒在弯管中输送过程的数值模拟OA北大核心CSTPCD
Numerical Simulation of Cylindrical Particles Conveying in Curved Ducts Using CFD-DEM Coupled Approach
针对物料在气力输送过程中特别是弯管部分易破碎的问题,采用计算流体力学(CFD)和离散单元法(DEM)耦合模拟弯管内的柱状颗粒气力输送过程,对弯径比k分别为1、2、3、4、6的90°弯管内柱状颗粒的运动状态、碰撞特性、碳碎原因及相关的力学特性进行研究.结果表明:球形颗粒与柱状颗粒在输送过程中遵循基本一致的变化规律,同样外部条件下,柱状颗粒的悬浮速度小于球形颗粒.当k=3时气力输送过程颗粒的破碎率最低.同时,颗粒与管壁的碰撞是造成颗粒破碎的主要原因.
For the particle breakage during the pneumatic conveying, the process of cylindrical particles conveying in the curved ducts was simulated using CFD-DEM coupled approach and the particles movement, features of collision, causes of breakage and relevant mechanics features of cylindrical particles in 90° curved duct were studied whose the ratio of curvature and diameter k was separately as 1, 2, 3, 4, 6. The results showed that the spherical particles had the …查看全部>>
卢洲;刘雪东;潘兵
常州大学机械工程学院,江苏常州213016常州大学机械工程学院,江苏常州213016常州大学机械工程学院,江苏常州213016
化学化工
气力输送柱状颗粒弯管数值模拟
pneumatic conveying cylindrical particles curved ductnumerical simulation
《中国粉体技术》 2011 (5)
65-69,5
评论