The evolution of streamwise counter-rotating vortices in flat plate boundary layer with leading edge pattern

Seyed Mohammad Hasheminejad, Hatsari Mitsudharmadi, S. H. Winoto, Kim Boon Lua, Hong Tong Low

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    The evolution of streamwise counter-rotating vortices induced by different leading edge patterns is investigated quantitatively using hot-wire anemometer. A notched and triangular leading edge with the same wavelength and amplitude were designed to induce streamwise vortices over a flat plate at Reynolds number (based on the wavelength of the leading edge patterns) of 3080 corresponding to free-stream velocity of 3 m/s. The streamwise velocity at different streamwise locations collected and analyzed using a single wire probe hot-wire anemometer showed reveal different characteristics of boundary layer flow due to the presence of these two leading edge patterns. The major difference is the appearance of an additional streamwise vortex between the troughs of the notched pattern. Such vortices increase the mixing effect in the boundary layer as well as the velocity profile.

    Original languageEnglish (US)
    Title of host publicationFluids Engineering Systems and Technologies
    PublisherAmerican Society of Mechanical Engineers (ASME)
    ISBN (Electronic)9780791857465
    DOIs
    StatePublished - 2015
    EventASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015 - Houston, United States
    Duration: Nov 13 2015Nov 19 2015

    Publication series

    NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
    Volume7A-2015

    Other

    OtherASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015
    Country/TerritoryUnited States
    CityHouston
    Period11/13/1511/19/15

    Bibliographical note

    Publisher Copyright:
    © 2015 by ASME.

    ASJC Scopus subject areas

    • Mechanical Engineering

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