During high-incidence maneuvers, shock-wave/boundary-layer interactions can develop over transonic inlet lower lips, significantly impacting aerodynamic performance. Here, a novel experimental rig is used to investigate the nature and severity of these interactions for a typical high-incidence scenario. Furthermore, the sensitivity to changes in angle of incidence and mass-flow rate is explored, as potentially experienced across off-design operations. The reference flowfield, informed by typical climb conditions, is defined by an incidence of 23 deg and a freestream Mach number M = 0.435 . The lower-lip flow is characterized by a rapid acceleration around the leading edge and an M 1.4 shock ahead of the intake diffuser. Overall, this flowfield is found to be relatively benign, with minimal shock-induced separation. Downstream of the interaction, the boundary layer recovers a healthy profile ahead of the nominal fan location. Increasing the incidence by 2 deg, the separation becomes noticeably larger and unsteadiness develops. Detrimental effects are exacerbated at an even higher incidence of 26 deg. Increasing the mass-flow rate over the lip by up to 15% of the initial value has minor effects on performance and is not found to inhibit the boundary-layer profile recovery.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Normal-Shock/Boundary-Layer Interactions in Transonic Intakes at High Incidence


    Contributors:
    Coschignano, A. (author) / Babinsky, H. (author) / Sheaf, C. (author) / Zamboni, G. (author)

    Published in:

    AIAA Journal ; 57 , 7 ; 2867-2880


    Publication date :

    2019-03-28


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Normal Shock Wave-Turbulent Boundary Layer Interactions in Transonic Intakes at Incidence (AIAA 2018-1513)

    Coschignano, Andrea / Babinsky, Holger / Sheaf, C. et al. | British Library Conference Proceedings | 2018



    Shock Wave-Boundary-Layer Interactions in Subsonic Intakes at High Incidence

    Makuni, Tafara E. / Babinsky, Holger / Slaby, Michal et al. | AIAA | 2015