连铸二冷区气-水喷雾冷却传热数学模型

The Mathematical Mode of Air-water Spraying Cooling Heat Transfer in Continuous Casting

摘要: 在前人对单个液滴碰撞传热解析研究的基础上,通过实验与理论分析,建立了气-水喷雾冷却在膜态沸腾区的传热数学模型。采用此模型,可以在已知气-水喷嘴的冷态参数(流量密度、液滴粒径、液滴速度等)的情况下,模拟计算出该喷嘴的传热特性。计算结果与实验数据在可比的范围内基本吻合。

Abstract: A mathematical model of air-water spraying cooling heat transfer in film boiling region is set up. With this model the heat flux and heat transfer coefficient can be calculated, when the air-water nozzle's water flux, droplet size and droplet velocity are given. The calculated results have a good agreement with the experimental datum.