低流速过冷沸腾截面平均空泡率实验研究  

Experimental Study of Average Void Fraction in Low-flow Subcooled Boiling

作　　者：孙奇[1] 杨瑞昌[2] 王小军[1] 郗昭[1] 赵华[1] 

机构地区：[1]中国核动力研究设计院空泡物理和自然循环重点实验室,四川成都610041 [2]清华大学热能工程系,北京100084

出　　处：《原子能科学技术》2005年第3期193-197,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(599954601);核工业科学基金资助项目(Y7100E5101)

摘　　要：以高温高压单探头光学探针为主要测量手段,进行了中压低流速过冷沸腾工况空泡率实验研究,截面平均空泡率根据探针测量得出的局部空泡率在流道截面上积分计算得出。实验数据与实验前提出的空泡率计算模型进行了比较,表明该模型在低流速过冷沸腾工况可获得满意的预测结果。实验结果与Saha模型以及Levy模型的比较表明:对于低流速数据,Saha模型预测结果明显偏高,Levy模型优于Saha模型,但预测结果仍略偏高。Low-flow subcooled void fraction in medium pressure was investigated using high-temperature high-pressure single-sensor optical probe in this paper. And then average void fraction was obtained through the integral calculation of local void fraction in the cross-section. The experimental data were compared with the void fraction model proposed in advance. The results show that the predictions of this model agree with the data quite well. The comparisons of Saha and Levy models with low-flow subcooled data show that Saha model overestimates the experimental data distinctively, and Levy model also gets relatively higher predictions although it is better than Saha model.

关 键 词：过冷沸腾 实验研究 空泡率 低流速 截面 平均 Saha模型 预测结果 光学探针 高温高压 积分计算 计算模型 实验数据 测量 工况 偏高 

分 类 号：O571.413[理学—粒子物理与原子核物理] TK124[理学—物理]