Abstract

A moderate size shock tube of 7m long with inner diameter of 55mm and thickness of 20mm has been is designed in-house and installed successfully in the Mechanical Engineering Department at Indian Institute of Technology Guwahati (IITG). The shock wave is generatedby rupturing metallic diaphragms instantly with appropriate pressure ratios across the driver (2m) and driven (5m) section of the shock tube. The pressure rise across the across primary and reflected shock is measured by high frequency pressure transducers located towards end of driven section. All necessary shock tube parameters are calculated through one-dimensional shock tube relations and are validated with experimental data.

Keywords

Shock tube, Shock mach number, Primary shock, Reflected shock, Pressure ratio, Aerodynamic behavior, Nozzle, Aluminum diaphragm, Shock propagating, Geometries, Diagnostic instrumentation, Aerodynamic body shapes, Free-piston shock tunnel, Sophisticated instruments