Stagnation zone formation on the axis of a closed vortex flow

I. V. Naumov, Valery Okulov, Robert Flemming Mikkelsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    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
    Volume21
    Issue number6
    Pages (from-to)767-770
    ISSN0869-8643
    Publication statusPublished - 2014

    Bibliographical note

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

    Keywords

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

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