摘要
为研究凹壁面切向射流的入射角度对离散颗粒行为的影响,以立式圆筒体为主要结构,分析圆形壁面射流液固两相流动。运用数值模拟对离散颗粒运动轨迹、颗粒分布、压力、切向速度、停留时间等参数进行分析计算。结果表明:入射角度增加,离散颗粒扩散角收缩,β=0°时离散颗粒扩散角为5.0°,β=45°时扩散角仅为1.5°。随着入射角度的增加,入口处静压力和颗粒切向速度分布变化不大,但粒径小于0.4 mm颗粒的最大和最小停留时间明显下降。该研究提供了液固两相凹壁面切向射流中颗粒行为影响的基础数据,为相关设备的结构设计提供参考。
In order to study the effect of inlet angle of concave-wall jet on the behavior of discrete particles,the liquid-solid two-phase flow of circular wall jet was analyzed with a vertical cylinder as the main structure.Numerical simulation was applied to analyze the discrete particle trajectory,particle distribution,pressure,tangential velocity and residence time.The results showed that the diffusion angle of the discrete particles shrank with the increase of the jet inlet angle,which was 5.0°forβ=0°and only 1.5°forβ=45°.The distribution of inlet static pressure and the particle tangential velocity were less change with the increase of jet inlet angle,but the maximum and minimum residence time of particles with particle size less than 0.4 mm decreased significantly.This study can provide basic data on the effect of particle behavior in liquid-solid two-phase concave-wall jet,and can be referenced by the structural design of related equipment.
作者
田志国
葛忠义
柳思远
蒋灿
张静
TIAN Zhiguo;GE Zhongyi;LIU Siyuan;JIANG Can;ZHANG Jing(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China)
出处
《辽宁化工》
CAS
2024年第4期540-544,共5页
Liaoning Chemical Industry
基金
辽宁省教育厅自然科学基础项目(项目编号:LJ2020016)
辽宁省教育厅重点攻关项目(项目编号:LZ2019001)。
关键词
液固两相
凹壁面切向射流
入射角度
离散颗粒
扩散
Liquid-solid two-phase
Concave-wall jet
Jet inlet angle
Discrete particles
Diffusion
