The plateau region in which trailing vortices initially exhibit slow decay of maximum tangential speed is demonstrated with the aid of constant and variable eddy viscosity models. The existence of the plateau is explained by the presence of the viscous core and by the necessity for transition of the initial, nearly inviscid profile to similarity far downstream. Span loading is shown to affect the initial maximum tangential speed as well as the duration of the plateau region. Triangular span loading is shown to present less hazard to trailing aircraft, at least in the near field, than elliptic loading because the inviscid profile for triangular loading exhibits a finite tangential speed at the vortex centerline and a large inviscid core.


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    Title :

    Inviscid to turbulent transition of trailing vortices


    Contributors:

    Conference:

    American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference ; 1975 ; Hartford, CT


    Publication date :

    1975-06-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :




    Turbulent Trailing Vortices

    Devenport, W. J. / Rife, M. C. / Liapis, S. I. et al. | British Library Conference Proceedings | 1994