无氧化喷雾冷却数值模拟  

Numerical simulation of spray cooling without oxidation

作　　者：许正焕 刘军祥 于庆波[1] 王鑫 Xu Zhenghuan;Liu Junxiang;Yu Qingbo;Wang Xin(Northeastern University)

机构地区：[1]东北大学冶金学院 [2]东北大学低碳钢铁前沿技术研究院 [3]辽宁省低碳钢铁前沿技术工程研究中心

出　　处：《冶金能源》2025年第1期45-50,共6页Energy For Metallurgical Industry

基　　金：中央高校基本科研业务专项资金(N2225042)。

摘　　要：针对热镀锌铝镁带钢的喷雾冷却过程,采用组分输运模型进行三维瞬态模拟,主要探究喷嘴的入口压力、喷雾角、质量流量等条件对带钢冷却的影响。结果表明,随着N 2和C_(5)H_(12)压力的增加,液滴平均直径减小,带钢中心冷却速率增加,且增加N 2压力对冷却速率的增益效果明显不如增加C_(5)H_(12)压力的;喷雾角在一定范围内增大时,带钢宽度方向温度不均匀性减小;随着质量流量的增加,壁面换热能力增加,带钢的冷却性能提升;使用ANOVA单因素分析法对各个因素的显著程度进行排序:C_(5)H_(12)压力>N 2压力>质量流量>喷雾角。Aiming at the spray cooling process of hot dip galvanized aluminum and magnesium strip,a three-dimensional transient simulation was carried out using a component transport model,and the effects of nozzle inlet pressure,cone angle and mass flow rate on the cooling of strip steel were investigated.The results show that with the increase of N 2 and C_(5)H_(12)pressure,the average droplet diameter decreases,and the cooling rate of strip center increases,and the effect of increasing N 2 pressure on the cooling rate is significantly worse than that of increasing C_(5)H_(12)pressure.When the cone angle increases within a certain range,the temperature non-uniformity of the strip width direction changes little.With the increase of mass flow rate,the heat transfer capacity of the wall increases,and the cooling performance of the strip improves.ANOVA univariate analysis was used to rank the significance of each factor:C_(5)H_(12)pressure>N 2 pressure>mass flow rate>cone angle.

关 键 词：喷雾冷却 数值模拟 冷却特性 单因素分析 SMD 

分 类 号：TG174.4[金属学及工艺—金属表面处理]