小宽高比矩形通道两相阻力特性研究  

Two Phase Pressure Drop Characteristics in Rectangular Channel With Low Aspect Ratio

作　　者：秦胜杰[1] 陈炳德[1] 闫晓[1] 张震[1] 肖泽军[1] 黄彦平[1] 

机构地区：[1]中国核动力研究设计院核反应堆热工水力技术重点实验室,四川成都610041

出　　处：《原子能科学技术》2013年第1期70-74,共5页Atomic Energy Science and Technology

摘　　要：通过对宽高比为0.05的矩形通道内两相流动阻力特性的实验研究结果,以及与现有经典公式的对比分析结果表明,现有公式在预测较小宽高比的矩形通道内阻力特性时偏差较大。引入了能够反映小通道对气泡生长的限制特性无量纲Nconf,用于对小宽高比矩形通道阻力特性的预测,并采用Lockhart-Martinelli方法拟合了C系数预测关系式。预测结果与实验数据比较,发现95%的实验数据与预测值相对偏差在±15%以内。The study on two phase pressure drop in rectangular channel with low aspect ratio (0.05) was carried on using water. The state-of-art correlations failed to satisfactorily predict the experimental data. The dimensionless Nconf can account for the maximum size of the bubble confined in small channel during flow boiling process. The data were used to develop a new correlation based on Lockhart-Martinelli method with Nconf. The correlation is tested against the experimental data, and the relative deviation is in ±15%.

关 键 词：矩形通道 阻力特性 Chisholm 关系式 

分 类 号：TL334[核科学技术—核技术及应用]