Abstract The interaction between self-sustaining dual jets and supersonic laminar boundary layer is experimentally studied using the nanoparticle-based planar laser scattering in a Ma 2.95 supersonic low-turbulence wind tunnel for the first time. The typical fine flow structures, such as separation shock, “W” bow shock, barrel shock, horseshoe vortex, large-scale vortex structures and counter-rotating vortex pairs, are clearly identified by streamwise and spanwise flowfield images. The curves of jet penetration depth are fitted at the momentum ratio of 0.55 between self-sustaining dual jets and supersonic crossflow. The results play a significant role in further and comprehensive exploration of the active flow control for a supersonic flow.

    Highlights A novel self-sustaining dual jets (SDJ) actuator is proposed. NPLS technique is adapted to obtain fine structures. The SDJ has high potential in supersonic/hypersonic flow field control.


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    Title :

    Fine structures of self-sustaining dual jets in supersonic crossflow


    Contributors:
    Liu, Qiang (author) / Luo, Zhenbing (author) / Deng, Xiong (author) / Wang, Dengpan (author) / Wang, Lin (author) / Zhou, Yan (author) / Cheng, Pan (author)

    Published in:

    Acta Astronautica ; 164 ; 262-267


    Publication date :

    2019-08-16


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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