An experimental and theoretical study of deflagration-to-detonation transition (DDT) in the granular explosive, CP

Journal Article · Tue Jul 01 00:00:00 EDT 1986 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(86)90068-4· OSTI ID:5452907

Baer, M R; Gross, R J; Nunziato, J W

In this paper, the authors present results of an experimental and theoretical study of the combustion processes associated with deflagration-to-detonation transition in the granular explosive, CP. Image-enhanced, high-speed streak photography recorded the various stages of flame spread within heavily confined charges as viewed through a Lexan window in a thick-wall, stainless steel tube. To characterize the phenomena, we applied a multiphase reactive flow model based on the theory of mixtures. This nonequilibrium model treated each phase as fully compressible and incorporated a compaction model for the granular reactant. Formulation of the constitutive models included a pressure-dependent burn rate and experimentally determined porous bed permeablility. Predictions of this model were in good agreement with experimental observations.

• Research Organization: Fluid and Thermal Sciences Dept., Sandia National Labs., Albuquerque, NM 87185
• OSTI ID: 5452907
• Journal Information: Combust. Flame; (United States), Vol. 65:1
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COBALT PERCHLORATES
COMBUSTION KINETICS
DETONATIONS
FLAME PROPAGATION
COMPRESSIBLE FLOW
DATA ANALYSIS
EXPERIMENTAL DATA
FLOW MODELS
GRANULAR MATERIALS
MIXTURES
PERMEABILITY
POROUS MATERIALS
PRESSURE DEPENDENCE
RESEARCH PROGRAMS
ULTRAHIGH-SPEED PHOTOGRAPHY
CHEMICAL REACTION KINETICS
CHLORINE COMPOUNDS
COBALT COMPOUNDS
DATA
DISPERSIONS
FLUID FLOW
HALOGEN COMPOUNDS
INFORMATION
KINETICS
MATERIALS
MATHEMATICAL MODELS
NUMERICAL DATA
OXYGEN COMPOUNDS
PERCHLORATES
PHOTOGRAPHY
REACTION KINETICS
TRANSITION ELEMENT COMPOUNDS
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry