The influence of the flat-plate leading-edge shape on laminar–turbulent transition is investigated. Experiments were carried out at a Mach number of M = 5 ; a unit Reynolds number Re 1 from 1.5 × 10 7 to 9 × 10 7    m 1 ; and a Reynolds number Re b , based on the leading-edge thickness b , up to 7 × 10 5 . Four leading-edge shapes were investigated: cylindrical, elliptical, flat face, and “smoothed” cylindrical. It has been shown that for Re b < 0.4 × 10 5 , these shapes practically do not affect transition; whereas at large Re b , the laminar run can be lengthened or shortened by the leading-edge shaping. The influence of bluntness thickness on the flow parameters at transition onset is analyzed by solving the Navier–Stokes and boundary-layer equations.


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    Title :

    Laminar–Turbulent Transition Reversal on a Blunted Plate with Various Leading-Edge Shapes



    Published in:

    AIAA Journal ; 60 , 1 ; 497-507


    Publication date :

    2021-09-22


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English