Measurements of weak and moderate oblique shock-vortex interactions in supersonic flow

Experiments were performed to quantify the interaction of a streamwise vortex with a series of oblique shock waves using stereoscopic particle image velocimetry. For these experiments, the streamwise vortex was created using a diamond-shaped, finite-span wing, pitched to one of two angles of attack (?? = 5???, 10???). Downstream of the wing, the streamwise vortex encountered a two-dimensional oblique shock, generated by a wedge (?? = 15???, 20???, 25???), resulting in a series of weak and moderate oblique shock-vortex interactions. While only moderate interactions produced a conical shock distortion, all interactions resulted in appreciable changes to the flow field downstream of the shock. These changes were reflected in increased velocity deficits and induced rotational motion; in the case of moderate interactions, increased turbulence kinetic energy was also apparent.