SOME METHODS OF GENERATING CYLINDRICAL EXPLOSIONS
Abstract
Methods were developed for generating cylindrical explosions by bursting pressurized glass cylinders. The cylindrical diaphragms (2 or 4 in. diam) are initially pressurized with air or with a combustible gas mixture. The cylindrical blast is produced by breaking the diaphragm with a mechanical breaker or igniting the mixture with an exploding wire and letting the cylinder break due to overpressure. The records include schlieren wave-speed traces of the time-distance plane as well as multi-spark schlieren photographs of the physical plane which can be taken at the equivalent framing rate of up to 250,000 pictures per second. Measurements are made of the rate of decay of the cylindrical shock velocity with time. Comparison with an existing approximate theory by Chisnell (J. Fluid Mech., 2:286, 1957) shows good agreement except for shock speeds near the origin of the blast. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1960
- Accession Number
- AD0258553
Entities
People
- Richard L Collins
Organizations
- University of Toronto