Cylindrical Heterogeneous Detonation Waves.
Abstract
Heterogeneous detonation refers to the fact that the fuel is in one physical state and the oxidizer in a different one. In these studies the fuel was in the form of liquid drops and the oxidizer was gaseous. This research program treated the blast wave initiation of heterogeneous detonation, the propagation of heterogeneous detonation through uniform and non-uniform clouds, and the influence of different fuels and/or different properties. The study involved theoretical as well as experimental work. An existent sectored shock tube, designed to model a cylindrical heterogeneous fuel-air cloud, was significantly enlarged and improved. Cylindrical blast waves of controllable strength were driven into the cloud by firing a condensed explosive at the apex of the sector. A number of fuels were tested; i.e. kerosene, decane, heptane, and kerosene mixed with normal propyl nitrate. A number of mixture ratios were investigated. The initiator energy levels required to establish detonation were noted for some cases. Heptane represented a case of high vapor pressure whereas decane, very similar in other respects, represented a low vapor pressure case. Significant differences were noted.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1980
- Accession Number
- ADA084749
Entities
People
- J. A. Nicholls
- M. Sichel
Organizations
- University of Michigan