EVOLUTION OF A REACTION CENTER IN AN EXPLOSIVE MATERIAL.

T. L. Jackson, A. K. Kapila, Donald Scott Stewart

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Experimental observations of ignition in explosive systems demonstrate that as a rule, combustion first sets in at small, discrete sites where inherent inhomogeneities cause chemical activity to proceed preferentially and lead to localized explosions. Combustion waves propagating away from these 'reaction centers' eventually envelope the remaining bulk. This study examines the spatial structure and temporal evolution of a reaction center for a model involving Arrhenius kinetics. The center, characterized by peaks in pressure and temperature with little diminution in local density, is shown to have one of two possible self-similar structures. The analysis employs a combination of asymptotics and numerics, and terminates when pressure and temperature in the reaction center have peaked.

Original languageEnglish (US)
Title of host publicationT.&A.M. Report (University of Illinois at Urbana - Champaign, Department of Theoretical and Applie
Edition484
StatePublished - Feb 1987
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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