Stability of Converging Cylindrical Shock Waves in a Vertical Annular Co-Axial Diaphragmless Shock Tube

摘要

The motion and stability of converging cylindrical shock waves created in a vertical annular co-axial shock tube and its characteristics were experimentally studied. To generate converging cylindrical shock waves, a vertical shock tube having a self-sustained structure was constructed. The initiation of shock waves was made by the sudden movement of a ring-shaped rubber membrane separating high-pressure driver gas form low-pressure test gases. Ring-shaped shock waves at a relatively wide range of shock wave Mach numbers were obtained.