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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.

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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.

    Article  Google 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.

    Article  Google 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.

    Article  Google 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.

  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.

    Article  Google 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.

    Article  Google 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.

    Article  Google 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.

    Article  Google 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.

    MATH  Article  Google 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. 335–341

    Google 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. 100–111

    Article  ADS  Google 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.

    Article  Google 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.

    Article  Google 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.

    Article  Google 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.

    MATH  Article  Google 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.

  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 

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Kashinsky, O.N., Lobanov, P.D. & Randin, V.V. The influence of a small gas addition to the structure of gas-liquid downward flow in a tube. J. Engin. Thermophys. 17, 120 (2008).

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  • Wall Shear Stress
  • Direct Numerical Simulation
  • Void Fraction
  • Bubble Size
  • Liquid Velocity