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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。
The influence of wall cooling on the temperature field and droplet separation of cyclone was studied by numerical simulation and theoretical analysis. Numerical simulation results show that the wall temperature can significantly change the temperature field of the cyclone, and the temperature along the radial M-shaped distribution, along the axial down gradually decreased, which is the cyclone-specific upstream and downstream heat transfer the result of. Through the analysis of droplet formation, collision and wall collision, it can be concluded that the wall cooling can promote the condensation, aggregation and sticking of the droplet, which is good for the droplet recovery.