气体/高黏液体两相间歇流动时液相含率的变化特性研究

Study on variation characteristics of liquid phase holdup in intermittent flow of gas/high viscosity liquid

准确地获取气液流动过程中相含率的变化,可以帮助监测长距离混输管道中的流态转化、流量波动以及压力脉动等。该文基于不同工况下的实验数据研究了水平及倾斜管中气体/高黏液体两相间歇流动时液相含率的变化特性。研究结果揭示了水平、垂直和倾斜管路中液相含率的影响因素,即黏度、倾斜角度、混合雷诺数和弗劳德数等。同时,发展了一种无量纲指数形式的相含率预测模型,误差分析表明模型预测结果与实验测试数据较为一致。

Accurately obtaining the variation of the phase holdup in the gas-liquid two-phase flow process can help to monitor the flow regime translation,flow fluctuation and pressure pulsation in long-distance mixed transportation pipelines.In this paper,based on the experimental data under different working conditions,the variation characteristics of liquid phase holdup during the intermittent gas/high viscosity liquid two-phase flow in horizontal and inclined pipes are studied.The results reveal the influencing factors of liquid holdup in horizontal,vertical and inclined pipelines,such as viscosity,pipe inclination,mixing Reynolds number and Froude number.At the same time,a dimensionless exponential model for phase holdup prediction is developed.The error analysis shows that the model prediction results are consistent with the experimental data.