Bifurcation of a liquid micro-jet in a vacuum

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Abstract

The horizontal outflow of liquid from micro-holes in a thin wall into a rarefied medium with a controlled degree of pressure drop is investigated. An azeotropic mixture of ethanol and water was used as a working fluid. With the help of photographic and video equipment, changes in the parameters of the flow of a liquid jet were recorded: the deflection of the flow of an overheated micro-jet against the force of gravity, the appearance of bifurcation points with the formation of several jet two-phase flows, and explosive decay of the jet flow. Possible reasons for the observed effects due to capillary-pressure instability of superheated ethanol micro-flows are discussed.

Original languageEnglish
Article number110904
JournalVacuum
Volume198
DOIs
Publication statusPublished - Apr 2022

Keywords

  • Bifurcation point
  • Capillary-pressure instability
  • Caverns
  • Cavitation
  • Ethanol
  • Micro-jet
  • Two-phase flows
  • Vacuum

OECD FOS+WOS

  • 2.05 MATERIALS ENGINEERING
  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY

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