【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N₂和C₅H₁₂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N₂压力对冷却速率的增益效果明显不如增加C₅H₁₂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：C₅H₁₂压力> N₂压力>质量流量>喷雾角。更多还原

【Abstract】 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 N₂ and C₅H₁₂ pressure, the average droplet diameter decreases, and the cooling rate of strip center increases, and the effect of increasing N₂ pressure on the cooling rate is significantly worse than that of increasing C₅H₁₂ 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: C₅H₁₂ pressure> N₂ pressure> mass flow rate > cone angle.更多还原