Shock-Wave Curvature at Low Initial Pressure
- 1 July 1961
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 4 (7), 812-815
- https://doi.org/10.1063/1.1706411
Abstract
The shape of the primary shock wave in a shock tube has been measured by recording the time of arrival of the shock in argon at an array of piezoelectric detectors located along a diameter of a 28.6‐mm i.d. shock tube operated at an initial expansion chamber pressure of 0.34 mm Hg. The following conclusions were drawn from the results: (1) Shock‐wave tilt was negligibly small under the conditions of these experiments; (2) shock‐wave curvature is independent of shock strength for shock Mach numbers from 1.8 to 6.3; (3) the shock‐front shape is nearly spherical; (4) the axial extent or the bulge of the curved shock is approximately 1 mm. The axial extent of a shock in argon was also measured over the range of initial pressure from 0.1 to 20 mm Hg. It varies approximately as the inverse square root of the initial pressure.Keywords
This publication has 5 references indexed in Scilit:
- Low-Density Shock Tube for Chemical Kinetics StudiesPhysics of Fluids, 1961
- On Flow Duration in Low-Pressure Shock TubesPhysics of Fluids, 1960
- Shock-Tube Performance at Low Initial PressurePhysics of Fluids, 1959
- Shock-Front-Thickness Measurements by an Electron Beam TechniquePhysics of Fluids, 1958
- Piezoelectric Detector for Low-Pressure Shock WavesReview of Scientific Instruments, 1958