Stagnation zone formation on the axis of a closed vortex flow

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The features of developing a counterflow zone (bubble-mode vortex breakdown or vortex explosion) at the center of an intensively swirled flow produced in a liquid-filled cylindrical container with a rotating endwall have been studied. The observation showed that the scenario of developing a bubble-mode breakdown zone with generation of counterflow is the same for cylinders with low or high aspect ratio, and it remains independent of stationary-nonstationary transition boundary for the main vortex flow.
Original languageEnglish
JournalThermophysics and Aeromechanics
Issue number6
Pages (from-to)767-770
Publication statusPublished - 2014

Bibliographical note

Research was financially supported by the Russian Science Foundation (Project No. 14-29-00093).


  • Confined vortex flow
  • Nonstationary vortex breakdown
  • Counterflow
  • Digital tracer visualization

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