基于Fluent-EDEM耦合仿真的籽棉颗粒运动特性分析  

Analysis of Particle Motion Characteristics of Seed Cotton Based on Fluent-EDEM Coupled Simulation

作　　者：王占 李晟锴[1] 祁琦[1] WANG Zhan;LI Sheng-kai;QI Qi(Huainan Union University,Huainan 232000,China)

机构地区：[1]淮南联合大学,淮南232000

出　　处：《价值工程》2025年第11期9-11,共3页Value Engineering

基　　金：基于Fluent—EDEM耦合的采棉机气力输送装置数值模拟与分析LQN2307,项目编号:00907112。

摘　　要：为了探究采棉机气力输送过程中造成堵塞机理,提高采棉机工作效率,首先建立量化气流输送管道;然后建立了籽棉颗粒的接触模型,采用Fluent-EDEM软件对管道内部气-籽棉颗粒进行了耦合仿真,对比分析了籽棉颗粒在管道内的运动特性。结果表明:管道结构弯曲度、入口速度对籽棉颗粒在管道内的流动特性影响很大;对比不同弯管弯曲程度的碰撞情况,颗粒及壁面在弯管弯曲程度越大,颗粒-壁面受到的碰撞次数越多,能量损失也更严重,颗粒的运动速度减缓程度也就越大,从而更加引起堵塞,导致采棉机的工作效率降低。研究采用的耦合仿真分析方法为气力输棉系统的输送管道设计和布置提供了理论基础和参考依据。In order to explore the mechanism of blockage caused by pneumatic conveying in cotton picking machines and improve their working efficiency,a quantified airflow conveying pipeline is first established.Then,a contact model of seed cotton particles was established,and Fluent-EDEM software was used to perform coupled simulation and comparative analysis of the motion characteristics of seed cotton particles inside the pipeline.The results showed that the curvature of the pipeline structure and the inlet velocity had a significant impact on the flow characteristics of seed cotton particles inside the pipeline.Comparing the collision situations of different bending degrees of bent pipes,the larger the bending degree of the pipe,the more collisions the particles and the wall are subjected to,and the more severe the energy loss.The slower the movement speed of the particles,the greater the blockage,which leads to a decrease in the working efficiency of the cotton picker.The coupling simulation analysis method used in the study provides a theoretical basis and reference for the design and layout of the conveying pipeline of the pneumatic cotton conveying system.

关 键 词：籽棉颗粒 气力输送 Fluent-EDEM气固耦合 离散元分析 气固两相流 

分 类 号：TS113[轻工技术与工程—纺织材料与纺织品设计]