Physical mechanisms of high-enthalpy initiation
| Autor: | Eduard Pruuel, Alexey Kashkarov, Nataliya Satonkina, Alexander Ershov |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Deflagration to detonation transition
Convection Explosive material Chemistry Astrophysics::High Energy Astrophysical Phenomena General Chemical Engineering Flow (psychology) Detonation General Physics and Astronomy Energy Engineering and Power Technology Thermodynamics General Chemistry Combustion Physics::Fluid Dynamics Acceleration Fuel Technology Deflagration |
| Zdroj: | Combustion, Explosion, and Shock Waves. 51:700-709 |
| ISSN: | 1573-8345 0010-5082 |
| Popis: | Injection of a hot gas flow produced by an external source into a powdered explosive allows very fast (within a few microseconds) deflagration-to-detonation transition. Under this high-enthalpy initiation conditions, the process begins with the stage of convective combustion, and the initial velocity of the wave is about 1 km/s. The combustion kinetics known from the literature does not provide the observed rapid development of the process. Various mechanisms of acceleration of the reaction are considered. Results of calculation for a two-phase gas-dynamic model are compared with data of synchrotron diagnostics (set of density profiles in the wave). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|