排灌机械工程学报

作者：WU Yuting,XU Kewei,KIM Hyoungbum,*

单位：1. School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju 52828, S. Korea; 2. Research Center for Aircraft Parts Technology, Gyeongsang National University, Jinju 52828, S. Korea

关键词：two-phase flow,CFD,PIV,slug flow,slug frequency

Two-phase flow in a horizontal pipe was investigated by using numerical and experimental visualization method. A horizontal pipe was built for qualitative and quantitative flow visualization. The length of horizontal pipe flow system is 9.5 m and the inner diameter is 51 mm. High-speed video method was used for the qualitative visualization and PIV method was applied for the quantitative visua-lization. The same geometry model was used for the numerical study. Three flow regimes including stratified flow, elongated bubble and slug flow field were generated and visualized by using numerical and experimental method. The results show similarities between experiment and simulation qualitati-vely. In addition, more quantitative results can be analyzed by numerical method. Development and decay process of slug flow was investigated and we found the decay of slug heavily depends on the magnitude of nose velocity and its lasting time. It can also be found that the liquid superficial velocity plays a significant role in affecting the slug frequency. When keeping the gas superficial velocity constant, the frequency will increase with the liquid superficial velocity.

来源：2021年第4期

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