The near wake of a hitherto untried segmented blunt trailing-edge model has been investigated experimentally using a laser Doppler velocimeter. On the plain base of the model, trapezoidal prismatic blocks with symmetry about a transverse plane are attached along the model span at regular intervals, and they are arranged in two different fashions leaving a gap between them of a trapezoidal shape in one case and parallelogrammatic in another case. The spanwise discontinuity of this kind in the trailing edge not only imposes dislocation of spanwise vortices but also generates large-scale streamwise vortices, which effectively stabilize the periodic wake. The study ascertains that these novel “flush-mounted vortex generators” can be used when the application demands the streamwise vortices to penetrate in the wake of a parallel-sided bluff body.


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    Title :

    Experimental Investigation of Vortex Flows Behind a Segmented Blunt Trailing Edge


    Contributors:

    Published in:

    AIAA Journal ; 51 , 11 ; 2529-2539


    Publication date :

    2013-09-12


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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