Reaction rate modeling in the deflagration to detonation transition of granular energetic materials
- Los Alamos National Lab., NM (United States)
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 and 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 the authors show inert plug formation that more closely replicates the qualitative features of experimental observations. Additional improvements to the rate modeling are suggested.
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 248255
- Report Number(s):
- CONF-951155-; ISBN 1-55899-321-5; TRN: IM9628%%355
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 27 Nov - 1 Dec 1995; Other Information: PBD: 1996; Related Information: Is Part Of Decomposition, combustion, and detonation chemistry of energetic materials; Brill, T.B. [ed.] [Univ. of Delaware, Newark, DE (United States)]; Russell, T.P. [ed.] [Naval Research Lab., Washington, DC (United States)]; Tao, W.C. [ed.] [Lawrence Livermore National Lab., CA (United States)]; Wardle, R.B. [ed.] [Thiokol Corp., Brigham City, UT (United States)]; PB: 469 p.; Materials Research Society symposium proceedings, Volume 418
- Country of Publication:
- United States
- Language:
- English
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