ISSN:
0721-3115
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
A simple theory relates the size effect (decrease of the detonation velocity with decreasing radius) of a cylinder with its average sonic reaction zone length, 〈xe〉, i.e. the distance from first reaction to the sonic plane. The size effect is described by \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{{\rm U}_{\rm s}}}{{\rm D}} = 1 - \frac{{\langle {\rm x}_{\rm e} \rangle}}{{\sigma {\rm R}_{\rm 0}}} $$\end{document} where R0 is the radius, Us and D the detonation velocities at R0 and at infinite size and σ is a function describing the extent of wall motion, which is calibrated using four explosives. In this theory, the cylindrical symmetry imposes a quadratic shape to the detonation front. The lag distance at the edge of the cylinder, L0, is related to the reaction zone length by 〈xe〉 ≍ L0. Collected results are presented for 56 measured curvatures on 26 explosives, with reaction zone lengths varying from 0.1 mm to 30 mm.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prep.19970220408
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