板式塔降液管中高气含率两相流研究

设计了盐水－空气系统试验装置模拟高压塔降液管中高气含率的两相流，采用毛细管光电检测技术测定了降液管中气含率分布和气泡直径分布，并与水－空气系统非高气含率的分布作了比较。实验结果与按上升气泡速度所预测的气含率相符合。

Study on two phase flow with high gas holdup in downcomer

The experiment device was designed for simulating the two phase flow with high gas holdup in the downcomer under high pressure. Salt solution-air was adopted as the testing system. The distribution of gas holdup and of bubble diameter in downcomer was measured using the capillary probe and the photoelectrical detect technique. The data were compared to the gas holdup distribution of water-air system which has lower gas holdup. The experimental results are in conformity with the predicted gas holdup which is based on the rising velocity of bubbles in the downcomer.