Two-camera plenoptic particle image velocimetry is used to study a three-dimensional (3-D) shock-wave/boundary-layer interaction (SBLI) generated by a single unswept fin. The SBLI considered was the swept interaction induced by a sharp fin at an angle of attack of 15 deg in Mach 2 flow. The fin generates an oblique shock with a wave angle of approximately 45 deg that interacts with the boundary layer on the incident flat plate. As an extension of previous work, these experiments were conducted to examine the effects of momentum-based flow actuation on the 3-D flowfield, as well as reduce the data uncertainty and improve the overall data quality via addition of a second camera. The following three cases are presented for this work: 1) the baseline interaction with the presence of the inactive microjet actuators (physical insert present), 2) the mean SBLI flowfield under the influence of microjet actuation upstream of the oblique shock, and 3) the mean flowfields corresponding to phase-locked images captured at four different phases of the actuator pressure cavity signal. The results show good correlation with the literature of the SBLI with actuation, including a possible shift or rotation of the shock feature during actuation, and an increased velocity deficit and boundary-layer height. The resonance-enhanced microjet actuation also had a notable impact on the low-speed flow region near the fin. This work presents one of the first 3-D measurements of a fin-generated SBLI influenced by flow actuation.
Volumetric Velocity Measurements of a Three-Dimensional Shock-Wave/Boundary-Layer Interaction with Flow Actuation Using Two-Camera Plenoptic Particle Image Velocimetry
AIAA Journal ; 60 , 7 ; 4191-4206
2022-03-16
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Three-Dimensional Particle Image Velocimetry Using a Plenoptic Camera
British Library Conference Proceedings | 2012
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