Basic Research on Large Flow Rate Micro Channel Gas Liquid Two Phase Flow

采用空气-水和空气-FC 3283实验装置，对液体夹带极限进行了实验研究。使用三角形和梯形横截面的微通道。通道长度，流速，入口质量变化的参数调查。在气相出口处测量夹带液滴的重量以评估液体夹带极限。液体夹带极限定义为当1%的入口液体流速作为液滴夹带在气相中时的最大流速。结果表明，利用液膜雷诺数、韦伯数和修正的邦德数可以很好地关联液体夹带极限。最后，提出了预测气液分离极限的无因次关联式。

In the present study, liquid entrainment limit was investigated experimentally by air-water and air-FC3283 experiment. The triangle and trapezoidal cross section micro channels were used. Channel length, flow rate, inlet quality were varied for the parametric survey. The weight of the entrained liquid droplets was measured at the gas phase exit to evaluate the liquid entrainment limit. The liquid entrainment limit is defined as the maximum flow rate when 1% of the inlet liquid flow rate was entrained as liquid droplets in the gas phase. As a result, the liquid entrain limit was correlated well using liquid film Reynolds number, Weber number, and modified Bond number. Finally, dimensionless correlations for predicting gas-liquid separation limits are proposed.