摘要
针对安装软翅模型的水平管气力输送气固两相流流动特性进行了数值分析.以软翅振动频率为主要变量,通过Fluent-Profile功能编写自激振荡流程序进行二次开发,并利用离散相模型(DPM)对气相速度矢量图、物料入口的颗粒路径、加速区颗粒速度矢量及稳定区的颗粒浓度分布进行定性分析.结果表明:安装软翅模型时,在软翅模型附近位置产生涡流,改变了气相流动方向,使加速区粒子得到了悬浮和加速.
Aiming at the installation of the soft wing model in gas pneumatic conveying system,characteristics of gas-solid two-phase flow are investigated by numerical analysis in horizontal tubes. Taking the frequency of soft wing vibration as the main variable,the program of self-excited oscillation flow was written with Fluent-Profile for secondary development. Meanwhile the discrete phase model（ DPM） was used to qualitatively analyze the path of particles,speed vector in accelerating region and distribution of particle concentration in the stable region. Finally,the results show that when the soft wing model is installed,the eddy current is generated in the vicinity of the soft wing model. What is more,the direction of gas flow is changed and the particles are suspended and accelerated.
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2017年第4期468-472,共5页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
江苏省自然科学基金资助项目(BK20140512)
教育部留学回国人员科研启动基金项目
关键词
气力输送
粒子路径
粒子浓度
粒子速度
pneumatic conveying
particle path
concentration of particles
particle velocity
