Normal Shock Dynamics in Internal Supersonic Flows

The normal shock train oscillations in a rectangular duct were studied experimentally. The studies have been classified into three groups. The studies in group I showed normal shock train oscillations and its structures at different duct locations. Group II studied about the shock oscillation when it stands on a hybrid micro vortex generator, while group III studied moving normal shock train. The shock structures have been visualized using high-speed schlieren imaging, and its oscillations have been quantified with time resolved image processing. It has been showed that the tertiary shock can oscillate at larger amplitude than secondary shock. Moreover, the injection assisted MVGs reduces shock oscillation even at its off-design condition.