From an experimental investigation of a notchback car near-wake, a new topological structure for the wake is proposed. Although experiments were only conducted on notchback vehicles, the topology can be related to other car shapes. The unsteady behavior of the near-wake was investigated. The near-wake frequencies, which can affect ride and steering comfort, were found to be 0.11U∞/xR and 0.42U∞/xR (xR - reattachment length). The lower frequency appears to be a result of large scale vortex shedding (‘hairpin’ vortex) behind the backlight/rear-window. The higher frequency can be attributed to the shear-layer vortices.


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    Titel :

    Time Averaged and Unsteady Near-Wake Analysis of Cars


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2001 World Congress ; 2001



    Erscheinungsdatum :

    2001-03-05




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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    2001-01-1040 Time Averaged and Unsteady Near-Wake Analysis of Cars

    Gilhome, B. R. / Saunders, J. W. / Sheridan, J. et al. | British Library Conference Proceedings | 2001




    Unsteady Near-Wake of Offshore Floating Wind Turbines

    Sebastian, T. / Lackner, M. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2012