摘要
为了解决铝箔剪切机工作中存在的碎屑收集问题,使用CFD方法对碎屑收集管挡板结构进行优化,在深入分析计算流场压力-速度耦合特征基础上,重点探讨了不同流动现象产生的原因。数值结果表明:设置挡板可有效改变管内局部流态,但设置1个挡板时支管速度差值达150%,无法产生均匀吸力;设置2个挡板时,后部挡板的“阻挡”作用产生回流区,气流流出管外。优化后等距型挡板设计在支管口形成均匀负压及吸力,可满足工业生产需求。
To avoid the foil scrap collection trouble during the routine work of the slitter,the baffle structures were improved to fix the fault by CFD method.Based on in-depth study on the pressure-velocity coupled features of the calculated flow,the reasons of different flow characteristics were discussed in detail.The numerical results show that baffle effort can affect flow pattern evidently.With 1 baffle,the velocity discrepancy value reaches to 150 percent between 2 branch pipes,generating no steady suction.With 2 baffles,however,visible recirculation zone appears due to blocking effort from the second baffle,causing an outlet velocity.Optimized equidistant baffles lead to steady negative outlet pressure and suction,thus meeting industrial requirement.
作者
刘跃
常玲玲
管小荣
LIU Yue;CHANG Lingling;GUAN Xiaorong(School of Intelligent Manufacturing,Shaanxi Institute of Technology,Xi'an 710300,China;School of Mechanical Engineering,Nanjing University of Science&Technology,Nanjing 210094,China)
出处
《机械制造与自动化》
2021年第4期68-70,96,共4页
Machine Building & Automation
基金
陕西省教育厅专项科研计划项目(20JK0508)。
关键词
铝箔剪切机
铝箔碎屑
结构优化
负压
数值模拟
foil slitter
foil scrap
structural optimization
negative pressure
numerical simulation
