为了揭示团状流中夹带液滴的产生机理，本文建立了气液团状流内界面波运动模型。该模型可以预测界面波沿壁面的运动规律及界面波特性（波幅、波速）的变化特点，理论解释团状流扰动性大的特点。结果表明：当气速较小或液速较大时，界面波在运动过程中存在反转现象，当进入环状流时，反转现象消失。界面波波速与最大波幅均随气、液速度的增大而增大，而临界波幅主要受气速的影响。通过与实验结果对比，证明该模型可以较好地反映界面波在团状流条件下的运动特点。
In order to help understand the mechanism of entrainment in churn flow, a model for wave properties in churn flow was proposed. This model could theoretically explain the oscillations in churn flow. The results indicated that a reversal happened during the wave moving process at lower gas velocity or higher liquid velocity, but disappeared in annular flow. The wave velocity and the maximum amplitude increased with the increase in gas and liquid flow rate, but the critical amplitude was mainly affected by gas phases and decreased with the increase in gas flow rate. The proposed model was verified over a range of experiment data.
参考文献
| [1] | B.J. Azzopardi;E. Wren .What is entrainment in vertical two-phase churn flow?[J].International Journal of Multiphase Flow,2004(1):89-103. |
| [2] | Enrico Da Riva;Davide Del Col .Numerical simulation of churn flow in a vertical pipe[J].Chemical Engineering Science,2009(17):3753-3765. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%