窄矩形通道内两相流动压降特性研究

以空气和水为工质，在40mm×1.6mm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Re_l/Re_g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。

Investigation on Resistance Characteristics of Two-Phase Flow Through Narrow Rectangular Duct

Two-phase frictional pressure drop of air-water mixture was studied in a narrow rectangular duct with cross-section 40 mm by 1.6 mm.The experimental results show that the conventional correlations fail to predict the two-phase frictional pressure drop in narrow rectangular duct;Lee-Lee correlation which is based on the rectangular duct gives a relatively good agreement with our experiment,but has lower values than the experimental data.Different modified Chisholm correlations were proposed in two regions wh...