Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2001, Vol. 12 ›› Issue (2): 143

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Distribution of void fraction for gas-liquid slug flow in an inclined pipe

XIA Guo-Dong1, ZHOU Fang-De2, HU Ming-Sheng2   

  1. 1 College of Environmental and Energy Engineering, Beijing Polytechnic University. Beijing 100022;
    2 State Key Leboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University. Xi'an 710049
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XIA Guo-Dong, ZHOU Fang-De, HU Ming-Sheng. Distribution of void fraction for gas-liquid slug flow in an inclined pipe.Nuclear Science and Techniques, 2001, 12(2): 143

Abstract: In order to investigate the effect of inclination angle on the spatial distribution of phases, experiments on gas-liquid two-phase slug flow in an inclined pipe were carricd out by using the optical probe and an EKTAPRO 1000 high speed motion analyzer. lt has heen demonstrated that the inclination angle and the mixture velocity are important parameters to influence the distribution of void fraction for upward slug flow in the inclined pipe. At high mixture velocity, the gas phase profile is axial symmetry in the cross-section of the pipe. This is similar to that for vertical slug flow. In contrast, most of the gas phase is located near the upper pipe wall at low mixture velocity. By measuring the axial variation of void fraction along the liquid slug, it can be concluded that there is a high void fraction wake region with length of 3~4D in the front of liquid slug. In the fully developed zone of liquid siug, the peak value of the void fraction is near the upper wall.

Key words: Gas-liquid sing flow, Void fraction, Inclined pipe