垂直管内蒸汽冷凝回流阻液分析模型的研究

Analytical Model for Flooding of Reflux Condensation in a Vertical Tube

在汽液两相分离流动模型的基础上，建立了垂直管内蒸汽冷凝回流阻液分析模型。采用该模型对单根Ｕ型管内蒸汽冷凝回流实验参数下的阻液起始点进行计算，计算结果与实验结果符合较好。分析模型还与现有分析模型和经验关系式进行了比较，结果表明，本模型与ＤｕｋｌｅｒＳｍｉｔｈ关系式符合较好，而与Ｋｕｔａｔｅｌａｄｅｚ类型关系式和其它分析模型的偏差相对较大。

An analytical model for the flooding of reflux condensation in a vertical tube was proposed based on the seperated flow models.Calculation results show that the present model predicts well the experimental data obtained in a single inverted U tube,and agrees well with the Dukler Smith correlation.However,the discrepancies between the present model and the Kutateladze's type of correlation,and other analytical models are great.