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Thermocapillary migration of bubbles and drops at moderate to large Marangoni number and moderate Reynolds number in reduced gravity

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Abstract

 Results from experiments on the thermocapillary migration of air bubbles and Fluorinert drops in a Dow–Corning silicone oil aboard a NASA Space Shuttle mission are presented and discussed. The experiments cover a wider range of Marangoni and Reynolds numbers than that attained in a prior flight experiment. The data are consistent with earlier results, and are compared with theoretical predictions. Large air bubbles were found to deform slightly in shape to oblate spheroids while the deformation of even the largest drops was within the uncertainty of the size measurements.

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Authors and Affiliations

  1. Department of Chemical Engineering Clarkson University, Potsdam, NY 13699-5705, USA, , , , , , US

    P. H. Hadland

  2. National Center for Microgravity Research on Fluids and Combustion NASA Lewis Research Center, Mail Stop 110-3, Cleveland, OH 44135, USA, , , , , , US

    R. Balasubramaniam

  3. Institut für Fluidmechanik und Fluidenergiemaschinen Freiberg University of Mining and Technology D-09596 Freiberg, Germany, , , , , , DE

    G. Wozniak

  4. Department of Chemical Engineering Clarkson University, Potsdam, New York 13699-5705, USA, , , , , , US

    R. S. Subramanian

Authors
  1. P. H. Hadland
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  2. R. Balasubramaniam
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  3. G. Wozniak
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  4. R. S. Subramanian
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Received: 18 December 1997/Accepted: 30 May 1998

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Hadland, P., Balasubramaniam, R., Wozniak, G. et al. Thermocapillary migration of bubbles and drops at moderate to large Marangoni number and moderate Reynolds number in reduced gravity. Experiments in Fluids 26, 240–248 (1999). https://doi.org/10.1007/s003480050285

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  • DOI: https://doi.org/10.1007/s003480050285

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