Time-series of turbulent flow in a pipe measured with PIV

Knud Erik Meyer, Jerry Westerweel

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    Abstract

    Measurements with particle image velocimetry of the fully developed flow of water in a pipe with a Reynolds number of 5370 are presented. The measurements are taken with a frame rate high enough to capture the same flow structure on 2 or 3 frames. This makes it possible to estimate advection velocities of the flow structures and distances between the structures. Ejection andsweep structures are identified and it is found that average advection velocity for the structures corresponds the local mean velocity at a distance of 0.15 diameter from the wall. It is also noted that ejections tend to appear in groups.
    Original languageEnglish
    Title of host publicationProceedings of The Third International Workshop on PIV'99
    Place of PublicationSanta Barbara
    PublisherThe University of Califonia, Santa Barbara
    Publication date1999
    Pages83-88
    Publication statusPublished - 1999
    EventThe Third International Workshop on PIV'99 - Santa Barbara, United States
    Duration: 16 Sep 199918 Sep 1999
    Conference number: 3

    Workshop

    WorkshopThe Third International Workshop on PIV'99
    Number3
    CountryUnited States
    CitySanta Barbara
    Period16/09/199918/09/1999

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