Void fraction distribution of vertical upward gas liquid slug flow

Key words:  slug flow  physical model  void fraction  transition segment length

Abstract:

To solve the problem of ambiguous distribution of void fraction in slug flow, according to some researcher 's experimental data, the slug flow was compartmentalized in a new way based on the void fraction. A physical model of slug flow was built. Considering the radial and axial distribution of void fraction, the distribution of void fraction and transition segment length were researched. And the error was analyzed. The results show that the distribution of void fraction and transition segment length ware mainly affected by superficial void fraction, and radial attenuation of transition segment length was decided by the relationship of liquid and gas flow velocity. The calculated results of void fraction and transition segment length agree well with the experimental data.