EXPERIMENTAL STUDY OF LARGE STRUCTURE IN THE FAR WAKES OF TWO-DIMENSIONAL BLUFF BODIES.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    7 Citations (Scopus)

    Abstract

    Smoke-wire flow visualization and hot-wire anemometry have been used to study near and far wakes of two-dimensional bluff bodies. For the case of a circular cylinder at 70 less than Re less than 2000, a very rapid (exponential) decay of velocity fluctuations at the Karman vortex street frequency is observed. Measured prominent frequencies in the far cylinder wake are in good agreement with those estimated by two-dimensional locally-parallel inviscid linear stability theory, when streamwise growth of wake width is taken into account. Finally, three-dimensionality in the far wake of a circular cylinder is briefly discussed and a mechanism for its development is suggested based on a secondary parametric instability of the subharmonic type.

    Original languageEnglish (US)
    Title of host publicationUnknown Host Publication Title
    StatePublished - 1985

    Fingerprint

    Circular cylinders
    Wire
    Flow visualization
    Smoke
    Vortex flow

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

    Cite this

    @inproceedings{74fb6e5f975b4c3da9ef818593308e27,
    title = "EXPERIMENTAL STUDY OF LARGE STRUCTURE IN THE FAR WAKES OF TWO-DIMENSIONAL BLUFF BODIES.",
    abstract = "Smoke-wire flow visualization and hot-wire anemometry have been used to study near and far wakes of two-dimensional bluff bodies. For the case of a circular cylinder at 70 less than Re less than 2000, a very rapid (exponential) decay of velocity fluctuations at the Karman vortex street frequency is observed. Measured prominent frequencies in the far cylinder wake are in good agreement with those estimated by two-dimensional locally-parallel inviscid linear stability theory, when streamwise growth of wake width is taken into account. Finally, three-dimensionality in the far wake of a circular cylinder is briefly discussed and a mechanism for its development is suggested based on a secondary parametric instability of the subharmonic type.",
    author = "Cimbala, {John Michael}",
    year = "1985",
    language = "English (US)",
    booktitle = "Unknown Host Publication Title",

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    EXPERIMENTAL STUDY OF LARGE STRUCTURE IN THE FAR WAKES OF TWO-DIMENSIONAL BLUFF BODIES. / Cimbala, John Michael.

    Unknown Host Publication Title. 1985.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    TY - GEN

    T1 - EXPERIMENTAL STUDY OF LARGE STRUCTURE IN THE FAR WAKES OF TWO-DIMENSIONAL BLUFF BODIES.

    AU - Cimbala, John Michael

    PY - 1985

    Y1 - 1985

    N2 - Smoke-wire flow visualization and hot-wire anemometry have been used to study near and far wakes of two-dimensional bluff bodies. For the case of a circular cylinder at 70 less than Re less than 2000, a very rapid (exponential) decay of velocity fluctuations at the Karman vortex street frequency is observed. Measured prominent frequencies in the far cylinder wake are in good agreement with those estimated by two-dimensional locally-parallel inviscid linear stability theory, when streamwise growth of wake width is taken into account. Finally, three-dimensionality in the far wake of a circular cylinder is briefly discussed and a mechanism for its development is suggested based on a secondary parametric instability of the subharmonic type.

    AB - Smoke-wire flow visualization and hot-wire anemometry have been used to study near and far wakes of two-dimensional bluff bodies. For the case of a circular cylinder at 70 less than Re less than 2000, a very rapid (exponential) decay of velocity fluctuations at the Karman vortex street frequency is observed. Measured prominent frequencies in the far cylinder wake are in good agreement with those estimated by two-dimensional locally-parallel inviscid linear stability theory, when streamwise growth of wake width is taken into account. Finally, three-dimensionality in the far wake of a circular cylinder is briefly discussed and a mechanism for its development is suggested based on a secondary parametric instability of the subharmonic type.

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    UR - http://www.scopus.com/inward/citedby.url?scp=0022299074&partnerID=8YFLogxK

    M3 - Conference contribution

    AN - SCOPUS:0022299074

    BT - Unknown Host Publication Title

    ER -