The influence of a small gas addition to the structure of gas-liquid downward flow in a tube



A study of the local structure of the turbulent gas-liquid bubble flow in a tube with an inner diameter of 20 mm was performed by using the electrodiffusion method. A special feature of this research is the relatively small (up to 5% of the volume) quantities of gas added to the flow. To determine the radial distribution of the liquid velocity, its pulsations, and the local void fraction, we used a sensor of the blunt nose type, which simultaneously functioned as an electrochemical sensor and a conductivity sensor. It was shown that adding even small quantities of gas into the flow leads to a change in the liquid velocity profile in comparison with the single phase flow and rearrangement of the turbulent structure of the flow.


Wall Shear Stress Direct Numerical Simulation Void Fraction Bubble Size Liquid Velocity 
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  1. 1.
    Ibragimov, M.Kh., Bobkov, V.P., and Tychinskii, N.A., Investigation of the Gas Phase Behavior in the Turbulent Flow of a Water-Gas Mixture in Channels, Teplofiz. Vys. Temp., 1973, vol. 11, no. 5, pp. 1051–1061.Google Scholar
  2. 2.
    Serizawa, A., Kataoka, I., and Michiyoshi, I., Turbulence Structure of Air-Water Bubble Flow. II Local Properties, Int. J. Multiphase Flow, 1975, vol. 2, pp. 235–246.CrossRefGoogle Scholar
  3. 3.
    Nakoryakov, V.E., Kashinsky, O.N., Burdukov, A.P., and Odnoral, V.P., Local Characteristics of Upward Gas-Liquid Flows, Int. J. Multiphase Flow, 1981, vol. 7, no. 1, pp. 63–81.CrossRefGoogle Scholar
  4. 4.
    Kashinsky, O.N., Gorelik, R.S., and Randin, V.V., Upward Bubble Flow in a Small-Diameter Vertical Pipe, Russ. J. Eng. Thermophys., 1995, vol. 5, no. 2, pp. 177–193.Google Scholar
  5. 5.
    Kashinsky, O.N., Timkin, L.S., Gorelik, R.S., and Lobanov, P.D., Experimental Study of the Frictional Stress and True Gas Content in Upward Bubble Flow in a Vertical Tube, Inzh. Fiz. Zh., 2006, vol. 79, no. 6, pp. 68–80 [J. Eng. Phys. Thermophys. (Engl. Transl.), vol. s79, no. 6, pp. 1117–1129].Google Scholar
  6. 6.
    Oshinovo, T. and Charles, M.E., Vertical Two-Phase Flow: Part 2. Holdup and Pressure Drop, Canad. J. Chem. Eng., 1974, vol. 52, pp. 438–448.CrossRefGoogle Scholar
  7. 7.
    Ganchev, B.G. and Peresad’ko, V.G., Hydrodynamic and Heat Exchange Processes in Downward Bubble Flows, Inzh. Fiz. Zh., 1985, vol. 49, no. 2, pp. 181–189.Google Scholar
  8. 8.
    Gorelik, R.S., Kashinsky, O.N., and Nakoryakov, V.E., A Study of Downward Bubble Flow in a Vertical Tube, Zh. Prikl. Mekh. Teor. Fiz., 1987, no. 1, pp. 69–73.Google Scholar
  9. 9.
    Clark, N.N. and Flemmer, R.L.C., On Vertical Downward Two Phase Flow, Chem. Eng. Sci., 1984, vol. 39, pp. 170–173.CrossRefGoogle Scholar
  10. 10.
    Clark, N.N. and Flemmer, R.L.C., Two-Phase Pressure Loss in Terms of Mixing Length Theory, Ind. Eng. Chem. Fundam., 1985, vol. 24, pp. 412–423.CrossRefGoogle Scholar
  11. 11.
    Clark, N.N. and Flemmer, R.L.C., Predicting the Holdup in Two-Phase Bubble Upflow and Downflow Using Zuber and Findlay Drift-Flux Model, AIChE, 1985, vol. 31, pp. 500–503.CrossRefGoogle Scholar
  12. 12.
    Wang, S.K., Lee, S.J., Jones, O.S., Jr., and Lahey, R.T., Jr., 3-D Turbulence Structure and Phase Distribution Measurements in Bubble Two-Phase Flows, Int. J. Multiphase Flow, 1987, vol. 13, pp. 327–343.CrossRefGoogle Scholar
  13. 13.
    Kashinsky, O.N. and Randin, V.V., Downward Bubble Gas-Liquid Flow in a Vertical Pipe, Int. J. Multiphase Flow, 1999, vol. 25, no. 1, pp. 109–138.MATHCrossRefGoogle Scholar
  14. 14.
    Kashinsky, O.N. and Randin, V.V., Downward Gas-Liquid Flow in a Vertical Pipe, Teplofiz. Aeromekh., 1999, vol. 12, no. 2, pp. 335–341Google Scholar
  15. 15.
    Hibiki, T., Coda, H., Kim, S., Ishii, M., and Uhle, J., Experimental Study on Interfacial Area Transport of a Vertical Downward Bubble Flow, Experiments in Fluids, 2003, vol. 35, pp. 100–111CrossRefADSGoogle Scholar
  16. 16.
    Hibiki, T., Coda, H., Kim, S., Ishii, M., and Uhle, J., Structure of Vertical Downward Bubble Flow, Int. J. Heat Mass Transfer, 2004, vol. 47, pp. 1847–1862.CrossRefGoogle Scholar
  17. 17.
    Sun, X., Paranjape, S., Kim, S., Ozar, B., and Ishii, M., Liquid Velocity in Upward and Downward Air-Water Flows, Ann. Nucl. Energy, 2004, vol. 31, pp. 357–373.CrossRefGoogle Scholar
  18. 18.
    Sun, X., Paranjape, S., Ishii, M., and Uhle, J., LDA Measurements in Air-Water Downward Flow, Exp. Therm. Fluid Science, 2004, vol. 28, pp. 317–328.CrossRefGoogle Scholar
  19. 19.
    Lu, J., Biswas, S., and Tryggvason, G., A DNS Study of Laminar Bubble Flows in a Vertical Channel, Int. J. Multiphase Flow, 2006, vol. 32, no. 6, pp. 643–660.MATHCrossRefGoogle Scholar
  20. 20.
    Pakhomov, M.A. and Terekhov, V.I., Flow Structure and Turbulence Modification in a Downward Bubble Flow, Proc. XIII Int. Heat Transfer Conf., Sydney, Australia, 2006.Google Scholar
  21. 21.
    Kashinsky, O.N., Kaipova, E.V., and Kurdyumov, A.S., Application of the Electrochemical Method for Measuring the Fluid Velocity in a Two-Phase Bubble Flow, Inzh. Fiz. Zh., 2003, vol. 76, no. 6, pp. 19–23 [J. Eng. Phys. Thermophys. (Engl. Transl.), vol. 76, no. 6, pp. 1215–1220].Google Scholar

Copyright information

© MAIK Nauka 2008

Authors and Affiliations

  • O. N. Kashinsky
    • 1
  • P. D. Lobanov
    • 1
  • V. V. Randin
    • 1
  1. 1.Kutateladze Institute of ThermophysicsSiberian Branch of the Russian Academy of SciencesNovosibirskRussia

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