Standard k- model, SHIH k- model and RSM predictions of trailing vortex induced by a 45o pitched blade turbine

    Research output: Book/ReportReport

    Abstract

    The trailing vortex induced by a 4/45° ptd was modelled using Fluent 5 CFD software. A dense grid, locally refined with hanging nodes was used in the impeller swept area. The standard and Shih k-e models as well as the Reynolds stress model (RSM) with near-wall calculation were tested. The standard k-e model predicted the tip vortex and the main flow quite well, only damping the vortex too early. The Shih k-e model improved the prediction of vortex extend and rotation, but failed to predict k correctly in the rotating coordinate zone of the multiple reference frame grid. The RSM predicted the strongest vortex, but underpredicted k in bulk region of the tank.
    Original languageEnglish
    PublisherVTT Technical Research Centre of Finland
    Publication statusPublished - 2000
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesVTT Energy Reports
    Number23/2000
    ISSN1457-3350

    Keywords

    • stirred tank
    • cfd
    • turbulence
    • trailing vortex

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