Abstract In this paper, dryout phenomenon of steam-liquid two-phase flow in vertical tube is studied. Based on Becker’s experimental data, 393 points of dryout data with pressure ranging from 2.9 to 20.1 MPa, mass flow rate ranging from 496 to 3120 kg/(m2 s), heat flux less than 1268 kW/m2 and pipe diameter ranging from 10 to 24.7 mm are re-fitted, and a new correlation for predicting the critical quality is proposed. The MAE of the new correlation is 7.2% when predicting the Becker's data. It also positively correlated with other databases of steam-liquid critical quality. However, the prediction accuracy of the new correlation is relatively low for refrigerant and deformation channel, which will be further revised in future work.

中文翻译：

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管材临界质量预测的新关联

摘要 本文研究了垂直管内汽液两相流的干涸现象。根据贝克尔的实验数据，393点干涸数据，压力范围为2.9～20.1 MPa，质量流量范围为496～3120 kg/(m2 s)，热通量小于1268 kW/m2，管径范围为10～重新安装 24.7 mm，并提出了预测临界质量的新相关性。预测贝克尔数据时，新相关性的 MAE 为 7.2%。它还与其他汽液临界质量数据库呈正相关。然而，新的相关性对制冷剂和变形通道的预测精度较低，将在未来的工作中进一步修订。