Parameters, limits, attenuation, and suppression of detonation in mixtures of an explosive gas with chemically inert microparticles

• Published in: Journal of engineering physics and thermophysics Vol. 85; no. 2; pp. 368 - 381
• Main Authors: Fedorov, A. V., Fomin, P. A., Tropin, D. A., Chen, Z.-R.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-03-2012; Springer; Springer Nature B.V
• Subjects: Algorithms; Analysis; Attenuation; Classical Mechanics; Complex Systems; Computational efficiency; Concentration (composition); Detonation; Detonation waves; Engineering; Engineering Thermodynamics; Explosions; Heat and Mass Transfer; Industrial Chemistry/Chemical Engineering; Inert; Mathematical analysis; Thermodynamics; gas–particles mixture; suppression of gaseous detonation; cell; explosion safety
• ISSN: 1062-0125; 1573-871X
• DOI: 10.1007/s10891-012-0662-5

Chapman–Jouguet parameters and the cell size of a detonation wave in mixtures of an explosive gas with chemically inert particles have been calculated. The algorithm of calculation of the minimum mass and characteristic dimension of a particle cloud ensuring successful suppression of detonation in the gas has been proposed. The calculation results are in good agreement with the available experimental data. The influence of the initial composition of the gas on the efficiency of suppression of the detonation wave has been analyzed. The issue of the dependence of the concentration limits of detonation on the mass fraction of particles has been investigated. It has been established that the increase in the concentration of the condensed phase leads to a narrowing of the existence domain of detonation and that the propagation of the detonation wave becomes impossible when the concentration of the particles is fairly high.