Abstract
The normal reflection of a plane shock, propagating in carbon dioxide at the Mach number 3.7, from the end of a cavity with a rectangular cross-section is experimentally investigated in a shock tube. The flow is visualized using the Cranz-Schardin system. Streak photographs and shadowgraphs of the time-dependent interaction of the reflected shock with the boundary layer under separation conditions with three-shock system formation are presented. On the basis of the experimental results the process of time variation of the flow pattern is described, the triple point trajectories are determined, and their distinctive features for the case of coalescence of the bifurcation zones, formed at opposite sides of the cavity, are discussed.
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