Skip to main content

Waves in Liquid Film Regimes of Adiabatic Two-Phase Flow in a Slit Microchannel

Abstract

Two-phase and two-component flows in microchannels being very promising for applications in areas such as microfluidics, microelectronic cooling, and heat exchange systems, there is a need to study characteristics of these flows and new effects associated with microchannel flows. This work presents an experimental and theoretical study of waves in stratified and annular flow regimes for a flat slit microchannel 104 \(\mu\)m high and 10 mm wide, with isopropanol used as a working liquid and nitrogen used as a gas. The lengths of waves appearing on the film on the lower wall of the microchannel were measured experimentally. Quantitative dependences of the wavelengths on the liquid and gas flow rates were obtained. A numerical calculation was performed using analysis of linear stability. The experimental data on the wavelengths were compared with the results of numerical calculations for wavelengths of maximum growth. Dependences of the averaged distances of transitions from 2D to 3D waves on the Reynolds numbers of the liquid and gas were obtained experimentally. Dependences of the maximum spatial rate of perturbation growth on the Reynolds numbers of the liquid and gas were found numerically and experimentally.

This is a preview of subscription content, access via your institution.

REFERENCES

  1. 1

    Ronshin, F. and Chinnov, E., Experimental Characterization of Two-Phase Flow Patterns in a Slit Microchannel, Exp. Therm. Fluid Sci., 2019, vol. 103, pp. 262–273.

  2. 2

    Qi, C. and Ng, C.O., Electroosmotic Flow of a Two-Layer Fluid in a Slit Channel with Gradually Varying Wall Shape and Zeta Potential, Int. J. Heat Mass Transfer, 2018, vol. 119, pp. 52–64.

  3. 3

    Zheng, D., Wang, X., and Yuan, Q., The Flow and Heat Transfer Characteristics in a Rectangular Channel with Convergent and Divergent Slit Ribs, Int. J. Heat Mass Transfer, 2019, vol. 141, pp. 464–475.

  4. 4

    D’Avino, G., Hulsen, M. A., Greco, F., and Maffettone, P.L., Numerical Simulations on the Dynamics of a Spheroid in a Viscoelastic Liquid in a Wide-Slit Microchannel, J. Non-Newtonian Fluid Mech., 2019, vol. 263, pp. 33–41.

  5. 5

    Chinnov, E.A. and Kabov, O.A., Two-Phase Flow Regimes in a Short Flat Channel, Techn. Phys. Lett., 2008, vol. 34, no. 8, pp. 699–701.

  6. 6

    Chinnov, E.A., Guzanov, V.V., Cheverda, V., Markovich, D.M., and Kabov, O.A., Regimes of Two-Phase Flow in Short Rectangular Channel, Micrograv. Sci. Technol., 2009, vol. 21, no. 1, pp. 199–205.

  7. 7

    Bar-Cohen, A. and Holloway, C., Waves, Instabilities, and Rivulets in High Quality Microgap Two-Phase Flow, J. Phys.: Conf. Ser. (IOP Publ.), 2016, vol. 745, no. 2, p. 022002.

  8. 8

    Bar-Cohen, A., Holloway, C., Kaffel, A., and Riaz, A., Waves and Instabilities in High Quality Adiabatic Flow in Microgap Channels, Int. J. Multiphase Flow, 2016, vol. 83, pp. 62–76.

  9. 9

    Ide, H., Kuroshima, R., and Kawaji, M., Investigation of Ring Waves in Gas–Liquid Two-Phase Flow in a Microchannel, Heat Transfer Engin., 2016, vol. 37, no. 11, pp. 912–920.

  10. 10

    Ayati, A.A., Farias, P.S.C., Azevedo, L.F.A., and de Paula, I.B., Characterization of Linear Interfacial Waves in a Turbulent Gas-Liquid Pipe Flow, Phys. Fluids, 2017, vol. 29, no. 6, p. 062106.

  11. 11

    Squire, H.B., On the Stability for Three-Dimensional Disturbances of Viscous Fluid Flow between Parallel Walls, Procs. Royal Soc. London. Ser. A, Containing Papers of a Mathematical and Physical Character, 1933, vol. 142, no. 847, pp. 621–628.

  12. 12

    Yih, C.S., Stability of Two-Dimensional Parallel Flows for Three-Dimensional Disturbances, Quart. Appl. Math., 1955, vol. 12, no. 4, pp. 434/435.

  13. 13

    Yih, C.S., Stability of Liquid Flow down an Inclined Plane, Phys. Fluids, 1963, vol. 6, no. 3, pp. 321–334.

  14. 14

    Vozhakov, I.S. and Ronshin, F.V., Experimental and Theoretical Study of Two-Phase Flow in Wide Microchannels, Int. J. Heat Mass Transfer, 2019, vol. 136, pp. 312–323.

  15. 15

    Ronshin, F.V., Dementyev, Yu.A., Chinnov, E.A., Cheverda, V.V., and Kabov, O.A., Experimental Investigation of Adiabatic Gas-Liquid Flow Regimes and Pressure Drop in Slit Microchannel, Micrograv. Sci. Technol., 2019, vol. 31, no. 5, pp. 693–707.

  16. 16

    Isaenkov, S.V., Cherdantsev, A.V., Vozhakov, I.S., Cherdantsev, M.V., Arkhipov, D.G., and Markovich, D.M., Study of Primary Instability of Thick Liquid Films under Strong Gas Shear, Int. J. Multiphase Flow, 2019, vol. 111, pp. 62–81.

Download references

Funding

This study was supported by the Russian Science Foundation (project no. 18-71-00116). The schlieren system was provided under state contract with IT SB RAS.

Author information

Affiliations

Authors

Corresponding author

Correspondence to Yu. A. Dementyev.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Ronshin, F.V., Dementyev, Y.A. & Vozhakov, I.S. Waves in Liquid Film Regimes of Adiabatic Two-Phase Flow in a Slit Microchannel. J. Engin. Thermophys. 29, 592–599 (2020). https://doi.org/10.1134/S1810232820040074

Download citation