An Interaction Between Shock Wave and Vortex Induced by Small Volume High-Pressure Shock Tube

In this research, the behavior and the interaction of a shock wave and a vortex ring using a small volume high pressure are experimentally studied. In order to make the shock wave and the vortex ring interact with each other, an elliptical cell is attached to the end of a shock tube of the low-pressure side. The function of the elliptical cell is to make the propagating shock wave inside the cell focus at the focal point and to generate the vortex ring from the exit of the elliptical cell. The visualization of the flow field took with a high-speed camera for the schlieren method. Pressure variations downstream of the exit are measured in order to figure out the results of the interaction between the shock wave and the vortex ring. As a result, the pressure variations downstream of the cell are found to be peaky compared to that by the straight shock tube. This is due to the effect of the focusing and spreading shock wave which generates the sudden induced velocity in the elliptical cell.