空心环形件电渣熔铸内结晶器的对流换热系数

发布时间：2018-06-08 11:38

本文选题：空心环形件电渣熔铸 + 内结晶器　；参考：《东北大学学报(自然科学版)》2017年08期

【摘要】："空心环形件电渣熔铸"内结晶器对流换热系数αin是衡量其内结晶器冷却效果的核心参数.本文将实测的内结晶器铜板水冷面温度、流体温度值代入基本算式求取并利用有限元分析验证来确定αin的取值范围,通过比照水平环形套管对流换热系数的经验公式来确定计算αin的经验公式.该经验公式用温差函数、效应因子、速度函数解析了内结晶器水模型温差、短管效应、内外径及高度等形状因素对αin的综合影响,提供了αin数据库建立的理论依据.
[Abstract]:The convection heat transfer coefficient 伪 _ (in) of the inner mold is the core parameter to evaluate the cooling effect of the inner mold. In this paper, the measured water surface temperature and fluid temperature of copper plate in the inner crystallizer are calculated by the basic formula and the range of 伪 in is determined by finite element analysis. By comparing the empirical formula of convection heat transfer coefficient of horizontal annular casing, the empirical formula for calculating 伪 in is determined. The empirical formula uses the temperature difference function, the effect factor and the velocity function to analyze the comprehensive influence of the shape factors such as temperature difference, short tube effect, inner and outer diameter and height on 伪 in, which provides the theoretical basis for the establishment of 伪 in database.
【作者单位】：东北大学冶金学院;沈阳铸造研究所;
【基金】：国家自然科学基金资助项目(51674070,51434004,51475313)
【分类号】：TG23

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