Mitigation of shock-induced boundary-layer separation using vortex generators (VGs) is an emerging flow control approach in planar inlet geometries. In the present work, an experimental campaign is performed to determine the effectiveness of microramp VGs at shock-induced separation control in an axisymmetric configuration. The baseline flowfield consists of a shock-induced separation generated by a 20 deg axisymmetric ramp mounted within a half-cylindrical duct at M = 2.5 and R e / m 5.3 × 10 7    m 1 . The near-wall VG flowfield and pressure field are first characterized to ensure consistency with planar microramp configurations. The effects of streamwise placement and single/multiple VGs on the shock-/boundary-layer interaction are subsequently investigated. The results indicate that, although the devices are effective at reducing separation immediately downstream, they cause an increased separation shock strength and interaction pressure rise, which enlarge separation in the uncontrolled areas of the flow.


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    Title :

    Experimental Investigation of Microramp Control of an Axisymmetric Shock/Boundary-Layer Interaction



    Published in:

    AIAA Journal ; 57 , 8 ; 3379-3394


    Publication date :

    2019-08-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English