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以空气和水为工质,在40 mm×1.6 mm的窄矩形通道中对竖直向上气-液两相流动压降特性进行了实验研究。对比了现有的两相流动阻力计算关系式,结果表明,传统的计算关系式均不适用于窄矩形通道内两相流动阻力的计算;而以窄矩形通道为基础的Lee-Lee关系式误差相对较小,但预测值与实验值相比整体偏小。为此结合实验数据,以分液相-分气相雷诺数之比Rel/Reg为依据将流动分为两个区域,分别对Chisholm关系式进行修正,修正关系式与实验数据的误差较小,能够很好地预测本次实验结果。
Using air and water as working fluid, the pressure drop characteristics of vertically upward gas-liquid two-phase flow in a narrow rectangular channel of 40 mm × 1.6 mm were studied. Comparing the existing calculation formulas of the two-phase flow resistance, the results show that the traditional calculation formulas are not suitable for the calculation of two-phase flow resistance in a narrow rectangular channel. However, the Lee-Lee relational error based on a narrow rectangular channel Is relatively small, but the predicted value is small compared with the experimental value as a whole. Based on the experimental data, the flow is divided into two regions on the basis of the Reynolds number ratio Rel / Reg of the liquid phase and the gas phase fraction, the Chisholm relation is corrected respectively, and the error between the correction relation and the experimental data is small. Good prediction of the experimental results.