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.
Fine structures of self-sustaining dual jets in supersonic crossflow
Acta Astronautica ; 164 ; 262-267
2019-08-16
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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