Reaction Rate Modeling in the Deflagration to Detonation Transition of Granular Energetic Materials

Autor: Steven F. Son, J. B. Bdzil, Blaine W. Asay, E. M. Kober
Rok vydání: 1995
Předmět:
Zdroj: MRS Proceedings. 418
ISSN: 1946-4274
0272-9172
DOI: 10.1557/proc-418-313
Popis: The problem of accidental initiation of detonation in granular material has been the initial focus of the Los Alamos explosives safety program. Preexisting models of deflagration-to-detonation transition (DDT) in granular explosives, especially the Baer & Nunziato (BN) model, have been examined. The main focus of this paper is the reaction rate model. Comparison with experiments are made using the BN rate model. Many features are replicated by the simulations. However, some qualitative features, such as inert plug formation in DDT tube-test experiments and other trends, are not produced in the simulations. By modifying the reaction rate model we show inert plug formation that more closely replicates the qualitative features of experimental observations. Additional improvements to the rate modeling are suggested.
Databáze: OpenAIRE
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