摘要
采用数值模拟和理论分析的方法研究了壁面降温对旋风分离器温度场及液滴分离规律的影响。数值模拟结果表明,壁面降温可以显著改变旋风分离器的温度场,且温度沿着径向呈M形分布,沿着轴向向下逐渐降低,这是旋风分离器特有的上、下行流动传热的结果。通过对液滴的形成、碰撞和碰壁的分析,得出壁面降温可以促进液滴的凝析、聚并和黏壁,有利于液滴的回收。
Numerical simulation and theoretical analysis were applied to study the in？ uence of wall cooling on cyclone temperature f ield as well as droplet separation laws.The simulation results showed that the wall cooling had great in？ uence on the temperature f ield in cyclone.As a result of upward and downward stream ？ ow and heat transfer in cyclone,the temperature presented M-shaped distribution along the radial direction and reduced downward gradually along the axial direction.After the analysis on the formation,collision and wall hitting of the droplet,a conclusion was reached that wall cooling could contribute to condensation,coalescence and wall sticking of the droplet and was helpful for the droplet recovery.
出处
《矿山机械》
北大核心
2012年第10期84-87,共4页
Mining & Processing Equipment
基金
国家科技支撑计划项目(2006BAD02)
关键词
旋风分离器
数值模拟
温度场
冷壁
cyclone
numerical simulation
temperature f ield
cool wall
