Abstract
The vortex ring generated by the open end shock tube is studied using shadowgraph and schlieren method. The shadowgraph image shows the vortex core, which shows a vortex ring formation. We examine the propagation process of the vortex ring for three shock numbers, 1.10, 1.21, and 1.31. The position which vortex ring is visualized is L/D=1.0, 3.0 ,5.0, where L is distance from open end to vortex ring , D is open end inner diameter. Vortex ring propagation process is observed, and vortex characteristics is discussed.
