高压窄缝矩形通道饱和两相阻力特性研究

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Study on Two Phase Pressure Drop of Saturated Boiling in Narrow Gap Channel under High Pressure

CNNC Key Laboratory on Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用窄缝矩形通道实验本体对饱和沸腾两相流动阻力特性进行实验研究。实验结果表明:现有经典公式以及采用空气-水、有机冷却剂获得的预测方法在预测窄缝矩形通道内阻力特性时偏差较大;无量纲Nconf数可以作为窄缝矩形通道对阻力特性的影响参数之一,用于窄缝矩形通道阻力特性的预测;以Chisholm的B系数方法为基础获得的窄缝矩形通道饱和两相阻力预测关系式预测结果与实验数据的偏差在±10%以内。
- 矩形通道 /
- 阻力特性 /
- 关系式 /
- Chisholm
Abstract: An experiment on two phase pressure drop in narrow rectangular channel was carried out.The experiment shows that the current classical correlations and the prediction methods based on air-water and organic coolant are with large deviation in the prediction of the pressure drop in narrow rectangular channels.The dimensionless Nconf number was used as an important parameter to predict the pressure drop in narrow rectangular channel.Prediction is conducted by the correlations for saturated two-phase resistance in narrow rectangular channels based on Chisholm’s B coefficient method.The deviation of predicted result with the experimental data is within ±10%.
- Rectangular channel /
- Pressure drop /
- Correlation /
- Chisholm