Experimental Study on Gas-Viscous Liquid Mixture Flow Regimes and Transitions Criteria in Vertical Narrow Rectangular Channels

In the study the influence of the physical-chemical properties of a liquid, the width of a channel gap and the superficial liquid and gas velocities on the patterns formed during two phase flows in vertical, narrow mini-channels was investigated. The research was performed in the channels of rectangular cross-section and of dimensions: 15 x 0.65 mm and 7.5 x 0.73 mm. The experimental data were compared with the published criteria of the transitions between the patterns of two-phase flows.

• F. J. Sowiński
• M. Dziubiński

• Two-phase flow
• flow regimes
• mini-channel
• viscosity.

[1] M. Dziubiński, "Hydrodynamika przep┼éywu mieszanin dwufazowych
ciecz-gaz," Politechnika Ł├│dzka, Monografie- Ł├│d┼║ (2005) (in polish)
[2] R. Ulbrich, L. Troniewski, "Two-phase gas-liquid flow in rectangular
channels," Chem. Eng. Sci., 39, 1984, pp 751.
[3] P. Satitchaicharoen, S. Wongwises, "Two-phase flow pattern maps for
vertical upward gas-liquid flow in mini-gaps channels," Int. J.
Multiphase Flow, 30, 2004, pp. 225
[4] J.L. Xu, P. Cheng, T.S. Zhao, "Gas-liquid two phase flow regimes in
rectangular channel with mini/micro gaps," Int. J. Multiphase Flow, 25,
1999, pp. 411.
[5] K. Mishima, T. Hibiki, H. Nishihara, "Flow regime transition criteria for
upward two-phase flow in vertical narrow rectangular channel," Nuc.
Eng. Design 203, 2001, pp. 117.
[6] T. Hibiki, M. Ishii, "Distribution parameter and drift velocity of drift
flux model in bubbly flow," Int. J. Heat and mass Transfer, 45, 2002,
pp.707.
[7] C.-C. Wang, Y-R. Jeng, J-J. Chien, Y-J. Chang, "Frictional performance
of highly viscous fluid in minichannels," Appl. Ther. Eng., 24, 2004, pp.
2243.
[8] L. Tomczak, J. Sowiński, "Application of image analysis to determine
two-phase liquid- gas flow parameters in narrow minichannels," Process
Chem. Eng., 28, 2007, pp1134.