An on-board space experiment of bubble thermocapillary migration was performed in the Chinese 22nd recoverable satellite in 2005. Silicone oil of nominal viscosity 5cSt was used as the continuous phase in the experiment. Air bubbles were injected into the liquid in the same direction as the constant temperature gradient in the liquid. The velocities of bubbles were obtained by recording the paths of the bubbles. The results indicate that the scaled velocity of bubbles decreases with an increase of the Marangoni number extended to 9288, which agrees with the results of previous space experiments and numerical simulation. In addition, the interaction between two bubbles was also observed in the space experiment. The trajectories and the velocities of the bubbles were obtained. The two-bubble experiment results are also consistent with the theoretical analysis.


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    Title :

    On-board experimental study of bubble thermocapillary migration in a recoverable satellite


    Additional title:

    Experimentelle Untersuchung der thermokapillaren Blasenmigration an Bord eines zurückholbaren Satelliten


    Contributors:
    Kang, Q. (author) / Cui, H.L. (author) / Hu, L. (author) / Duan, L. (author)

    Published in:

    Publication date :

    2008


    Size :

    5 Seiten, 4 Bilder, 15 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Non-Classical Thermocapillary Bubble Migration

    Viviani, A. / Golia, C. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1999


    Non-classical thermocapillary bubble migration

    Viviani, A. / Golia, C. | AIAA | 1999