90°弯管中球柱状颗粒气力输送特性研究  

STUDY ON PNEUMATIC CONVEYING CHARACTERISTICS OF SPHEROCYLINDRICAL PARTICLES IN A 90°BEND PIPE

作　　者：宋金华[1] 舒梦[1] 帖金鑫[1] 杨洋[1] 吴育洁 洪晨 李瑞龙 何逸波[1] SONG Jinhua;SHU Meng;TIE Jinxin;YANG Yang;WU Yujie;HONG Chen;LI Ruilong;HE Yibo(China Tobacco Zhejiang Industrial Company Limited,Ningbo 315100,Zhejiang,China;School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江中烟工业有限责任公司,浙江宁波315100 [2]浙江大学航空航天学院,杭州310027

出　　处：《力学与实践》2025年第2期315-322,共8页Mechanics in Engineering

摘　　要：通过耦合计算流体力学(computational fluid dynamics,CFD)与离散单元法(discrete element method,DEM),对球柱状颗粒在90°弯管中的气力输送过程进行了数值模拟研究。重点分析了入口气体速度、颗粒质量流量、颗粒长径比和管道直径等参数对管道压降、出口处平均颗粒速度、平均颗粒碰撞次数和碰撞强度等指标的影响规律。结果显示,不同参数组合对系统的输送性能有较大影响,系列定量结果加深了对球柱状颗粒在90°弯管中气力输送特性的认识,并对提高其气力输送效率有指导意义。This study conducts a numerical simulation of the pneumatic conveying process of spherocy-lindrical particles in a 90°bend by coupling computational fluid dynamics(CFD)with the discrete element method(DEM).The focus is on analyzing the effects of inlet gas velocity,particle mass flow rate,particle aspect ratio,and pipe diameter on parameters such as pressure drop,the magnitude of average particle velocity at the outlet,the average particle collision number,and the average particle collision intensity.The results show that different parameter combinations have a significant impact on the conveying performance of the system.The quantitative findings enhance the understanding of the pneumatic conveying characteristics of spherocylindrical particles in a 90°bend and provide valuable insights for improving pneumatic conveying efficiency.

关 键 词：气力输送 球柱状颗粒 离散单元法 90°弯管 

分 类 号：O35[理学—流体力学]