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Multiphase Science and Technology
SJR: 0.183 SNIP: 0.483 CiteScore™: 0.5

ISSN Imprimir: 0276-1459
ISSN On-line: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v21.i3.40
pages 249-266


Oleg A. Kabov
Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences, 1, Acad. Lavrentyev Ave., Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova str., Novosibirsk, 630090, Russia; Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russia
Dmitry V. Zaitsev
Kutateladze Institute of Thermophysics SB RAS, 1, Lavrentiev Ave, Novosibirsk, 630090, Russia; Novosibirsk State University, 2, Pirogova str., Novosibirsk, 630090, Russia


Thin liquid films driven by a forced gas/vapor flow (stratified or annular flows) (i.e., shear-driven liquid films in a narrow channel) are promising candidates for an innovative cooling technique optimizing the trade-offs between performance and cost. The present work is a part of the MAP BOILING program of the European Space Agency and a part of the preparation of the SAFIR experiment onboard the International Space Station. The paper focuses on the recent progress that has been achieved by the authors through conducting experiments with locally heated shear-driven and falling liquid films. Rupture of the liquid film was investigated, and it was found that scenario of film rupture differs widely for different flow regimes. The critical heat flux is ~ 10 times higher for a shear driven film than that for a falling liquid film and reaches 250 W/cm2 in experiments with water at atmospheric pressure. Rupture of a subcooled falling liquid film heated from the substrate is preceded by the formation of steady-state film surface deformations. The film spontaneously ruptures at the moment when the film thickness in the thinned region reaches a certain critical minimum independent of both the Reynolds number and the plate inclination angle (gravity force). By means of high-speed imaging, it is found that the process of rupture involves two stages: (i) abrupt film thinning down to a thin residual film and (ii) rupture and dryout of the residual film. As the plate inclination angle is reduced, the threshold heat flux required for film rupture weakly decreases; however, when the angle becomes negative, the threshold heat flux begins to rise dramatically, which is associated with an increase of the stabilizing hydrostatic effect due to the growth of the film thickness. Procedures to organize a gas shear-driven liquid film flow under variable gravity conditions (parabolic flights) have been verified. It was found that the flow dynamics in normal gravity differs significantly from that in microgravity; in particular, the film is wavier under low-gravity conditions.


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  7. Chinnov, E. A. and Kabov, O. A., Marangoni effect on wave structure in liquid films.

  8. Chinnov, E. A. and Kabov, O. A., Jet formation in gravitational flow of a heated wavy liquid film.

  9. Chinnov, E. A., Kabov, O. A., Muzykantov, A. V., and Zaitsev, D. V., Influence of plate inclination on heat transfer and breakdown of locally heated flowing liquid film.

  10. Frank, A. M. and Kabov, O. A., Thermocapillary structure formation in a falling film: Experiment and calculations.

  11. Gambaryan-Roisman, T., Kyriopoulos, O., Roisman, I., Stephan, P., and Tropea, C., Gravity effect on spray impact and spray cooling.

  12. Gatapova, E. Ya., Kabov, O. A., and Marchuk, I. V., Thermocapillary deformation of a locally heated liquid film moving under the action of a gas flow. DOI: 10.1134/1.1760873

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  15. Kabov, O. A., Cooling of microelectronics by thin liquid films.

  16. Kabov, O. A., Breakdown of a liquid film flowing over the surface with a local heat source.

  17. Kabov, O. A., Bartashevich, M. V., Glushchuk, A., and Cheverda, V., The effect of variable gravity and shear stress on the flattened rivulet dynamics in a minichannel.

  18. Kabov, O. A., Benoit, S., Sharina, I. A., and Legros, J.-C., Heat transfer and rivulet structures formation in a falling thin liquid film locally heated. DOI: 10.1016/S1290-0729(02)01361-3

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  31. Zaitsev, D. V. and Kabov, O. A., Study of the thermocapillary effect on a wavy falling film using a fiber optical thickness probe. DOI: 10.1007/s00348-005-0003-y

  32. Zaitsev, D. V., Kabov, O. A., and Evseev, A. R., Measurement of locally heated liquid film thickness by a double-fiber optical probe. DOI: 10.1007/s00348-003-0621-1

  33. Zaitsev, D. V., Rodionov, D. A., and Kabov, O. A., Study of thermocapillary film rupture using a fiber optical thickness probe.

  34. Zaitsev, D. V. and Kabov, O. A., An experimental modeling of gravity effect on rupture of a locally heated liquid film.

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