Fundamental Aspects of Unconfined Explosions
Abstract
Blast wave initiation of detonation in a completely homogeneous cloud is considered. The self similar character of strong blast waves and Chapman- Jouguet detonation waves is used to arrive at simplified closed form solutions for the generation of ground impulse and dynamic impulse, up to the time that the detonation arrives at the edge of the cloud. The dependence of impulse on fuel properties and cloud geometry is predicted. The influence of side relief at the top of the cloud is considered. Experimental studies are described which investigate the initiation, transition, and quasi-steady propagation processes associated with blast initiated, cylindrical detonation waves. Experiments were conducted with all gaseous and heterogeneous fuel-air mixtures wherein a specially designed sectored shock tube was employed. A complete volumetric range of MAPP (Methyl acetylene, propane, propadiene)-air mixtures was investigated. some results on the breakup and ignition of single fuel drops, when subjected to strong blast waves, are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1974
- Accession Number
- ADB001218
Entities
People
- Chenming Hu
- J. A. Nicholls
- K. Kearney
- M. Sichel
- R. Desaro
- R. S. Fry
Organizations
- University of Michigan