Liquid rivulets moved by shear stress of gas flow at altered levels of gravity

V. V. Cheverda, A. Glushchuk, P. Queeckers, S. B. Chikov, O. A. Kabov

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Experiments with gas shear-driven rivulet flows in a minichannel of height 1.4 mm and of width 30 mm were conducted during several parabolic flights campaigns organized by the European Space Agency (ESA). Rivulet flow is defined as a particular case of liquid film flow when the film occupies only a part of the substrate without touching to the lateral walls of the channel. A high frequency schlieren technique has been used for visualization of the two-phase flows. It is shown that surface tension becomes the dominating force with decreasing of the gravity level, which results in reducing of the rivulet width. The width increases with the gravity level and with the liquid flow rate growth and reduces with the gas flow rate growth.

Original languageEnglish
Pages (from-to)73-81
Number of pages9
JournalMicrogravity Science and Technology
Volume25
Issue number1
DOIs
Publication statusPublished - 1 Feb 2013

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Keywords

  • Gravity effects
  • Minichannel
  • Parabolic flight
  • Rivulet
  • Thin liquid film
  • Two-phase flow

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)
  • Modelling and Simulation
  • Applied Mathematics

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