A theory of distortion of the reaction zone

Autor: Shao-Mu Ma, Nancy Coon, Patrick Redington, Billings Brown, Henry Eyring
Rok vydání: 1980
Předmět:
Zdroj: Proceedings of the National Academy of Sciences. 77:5575-5579
ISSN: 1091-6490
0027-8424
DOI: 10.1073/pnas.77.10.5575
Popis: A cylindrical detonating explosive behaves like a non-Newtonian viscous fluid emerging from a cylindrical pipe. The expression for non-Newtonian viscous flow has been applied to detonating explosives. The resultant fit to emerging flame fronts from detonation is excellent for a wide variety of detonating explosives both for transients (at various times) and for steady state. The quantities k ′(λ/λ 1 )(2/ B ) and 1/ B and the rate constant k ′ increase abruptly at a time supporting a change in mechanism from deflagration to detonation in the transient during initiation. All of these parameters are temperature sensitive, indicating an abrupt temperature increase as a condition or indicator in the deflagration-to-detonation transition. Furthermore, a straight line results when log particle velocity u is plotted against log radial distance r , indicating that, for the explosives studied, the hyperbolic cosine wave front can be replaced by a parabolic wave front within the accuracy of the available experimental data.
Databáze: OpenAIRE
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