Effect of chemically inert particles on parameters and suppression of detonation in gases

An algorithm for calculating the parameters of a steady one-dimensional detonation wave in mixtures of a gas with chemically inert particles and estimating the detonation-cell size in such mixtures is proposed. The calculated detonation parameters and cell size in stoichiometric hydrogen-oxygen mixt...

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Bibliographic Details
Published in:Combustion, explosion, and shock waves explosion, and shock waves, 2009-05, Vol.45 (3), p.303-313
Main Authors: Fomin, P. A., Chen, J. -R.
Format: Article
Language:English
Subjects:
Algorithms
Channels
Classical and Continuum Physics
Classical Mechanics
Clouds
Combustion
Control
Detonation
Dynamical Systems
Engineering
Estimating
Inert
Mathematical analysis
Physical Chemistry
Physics
Physics and Astronomy
Vibration
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Summary:An algorithm for calculating the parameters of a steady one-dimensional detonation wave in mixtures of a gas with chemically inert particles and estimating the detonation-cell size in such mixtures is proposed. The calculated detonation parameters and cell size in stoichiometric hydrogen-oxygen mixtures with W, Al 2 O 3 , and SiO 2 particles are used to analyze the method of suppression of multifront gas detonation by injecting chemically inert particles ahead of the leading wave front. The ratio between the channel diameter and the detonation-cell size is used to estimate the limit of heterogeneous detonation in the mixtures considered. The minimum mass of particles and the characteristic cloud size necessary for detonation suppression are calculated. The effect of thermodynamic parameters of particles on the detonation suppression process is analyzed for the first time. Particles with a high specific heat and (if melting occurs) a high phase-transition heat are found to exert the most pronounced effect.
ISSN:0010-5082
1573-8345
DOI:10.1007/s10573-009-0040-6