中文摘要：

常压下以空气和去离子水为工质，对横截面为1.41 mm ×40 mm和3 mm ×40 mm的竖直矩形通道内两相流动阻力特性进行了实验研究。利用获得的764组实验数据，对11种典型两相流摩擦阻力计算模型进行评价。结果表明：Lee-Lee模型整体预测精度最高，但在分液相雷诺数较小（Rel ＜600）和较大（Rel＞8700）区域，与实验值符合较差；在分液相紊流区（Rel ≥2000） Chisholm B模型适用性较好，对于两实验段预测值与实验值绝对平均误差分别为6.13％和6.43％，但在分液相层流区（Rel ＜2000）其预测值与实验值偏差较大。根据压降特性提出修正两相动力黏度，并针对分液相层流区提出修正计算关系式，其预测值与实验值符合较好。

英文摘要：

The frictional resistance characteristics of air-deionized water two-phase flow in two vertical rectangular channels with respective cross sections of 1.41 mm × 40 mm and 3 mm × 40 mm were experimentally studied under atmospheric pressure condition . Eleven classical two-phase flow frictional resistance models were assessed with the acquired 764 data sets .The results show that Lee-Lee model fits well with the data ,but there still exists relatively large deviations in high （Rel 〉 8 700） and low （Rel 〈 600） liquid Reynolds number regions .In the liquid turbulent region （Rel ≥2 000） the most accurate model is Chisholm B model with the mean absolute errors of 6.13% and 6.43%for the two channels respectively ,which however predicts the frictional pressure drop in the liquid laminar region （Rel 〈2 000） with large deviations compared to experimental data .The modification to two-phase dynamic viscosity is implemented according to the flow resistance characteristics and a modified correlation is proposed for the liquid laminar region , with which the predicted results show a good agreement with the experimental data .