Flexible panels deforming under pressure loads have been suggested as a passive form of adaptive oblique shock control. This study investigates oblique shock–boundary-layer interactions on a steady flexible panel in a Mach 2.0 flow. Experiments were performed in the Imperial College supersonic wind tunnel, where shock generators were used to produce an oblique shock followed by a corner expansion. A parametric study was conducted, exploring different shock impingement positions and shock–expansion distances. The steady aerostructural response is studied using schlieren photography, static pressure distributions, photogrammetry measurements, and surface oil flow visualization. Two-dimensional numerical simulations were performed to assess the effects of the flexible panel on downstream total pressure recovery. These were validated against experimental wall pressure distributions and measurements from a Pitot rake. Results show reductions in both separation length (of up to 40%) and stagnation pressure losses (of up to 10%) if the flexible plate is used. These improvements occur for a range of shock positions spanning approximately 50% of the panel length and for all the shock–expansion distances considered. A model that captures the flow physics responsible for these trends is proposed. The results highlight the potential of flexible panels for practical oblique shock control.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Oblique Shock Control with Steady Flexible Panels


    Contributors:

    Published in:

    AIAA Journal ; 58 , 5 ; 2109-2121


    Publication date :

    2020-02-28


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Noraml and Oblique Shock Waves

    Emanuel, George | AIAA | 1986


    Oblique Shock Control by Surface Arc Discharge Plasma

    Yan, Hong / Liu, Fan / Xu, Jie | AIAA | 2016


    Asymmetry of oblique shock train and flow control

    Zhang, Zhigang / Cheng, Chuan / Zhang, Lantian et al. | SAGE Publications | 2024