哈尔滨工程大学学报2025，Vol.46Issue(2)：374-382,9.DOI:10.11990/jheu.202307008
窄矩形通道高过冷沸腾流动与传热模型分析
Analysis of high sub-cooled boiling flow and heat transfer models in a narrow rectangular channel
摘要
Abstract
Experimental research was conducted on the flow and heat transfer in the coolant channel of plate fuel el-ements under high sub-cooled boiling conditions.Inside a narrow rectangular channel at a pressure of 0.2 MPa,deionized water with a sub-cooling range of 25～50℃ and a mass flow rate of 400～700 kg/(m2·s)was heated by one side to induce boiling.The wall heat flux ranged from 70 kW/m2 to 375 kW/m2,and the outlet void fraction varied from 0.002 9 to 0.083 8.In the experiment,pressure difference sensors and K-type armored thermocouples were used to obtain pressure drop data and wall temperature data within the experimental section.The experimental data were used to evaluate the correlations between two-phase flow and boiling heat transfer in the references.The results show that the existing boiling heat transfer coefficient and two-phase friction pressure drop models have poor predictive ability for high sub-cooled boiling.The prediction model of boiling heat transfer coefficient and two-phase friction pressure drop suitable for high sub-cooled boiling in narrow rectangular channels was established.The mean absolute errors of the this model for predicting boiling heat transfer coefficient and two-phase friction pressure drop were 12.45％and 16.72％,respectively.These results are better than those of the existing models.The reliability of the this model was further verified by comparing it with experimental data in the literature.关键词
窄矩形通道/高过冷沸腾/两相换热系数/两相摩擦压降/传热模型/分相流模型/均相流模型/实验研究Key words
narrow rectangular channel/high sub-cooled boiling/two-phase heat transfer coefficient/two-phase frictional pressure drop/heat transfer model/split phase flow model/homogeneous model/experimental study分类
核科学引用本文复制引用
刘可心,闫震,徐建军,丁雷,丁铭,曹夏昕..窄矩形通道高过冷沸腾流动与传热模型分析[J].哈尔滨工程大学学报,2025,46(2):374-382,9.基金项目
国家自然基金联合基金重点项目(U2167207) （U2167207）
中央高校基本科研业务费——博士研究生科研创新基金项目(3072023GIP1502). （3072023GIP1502）
