Detonation of Gas-Particle Flow


  1. Zhang, F.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN)
Fine organic or metallic particles suspended in an oxidizing or combustible gas form a reactive particle-gas mixture. Explosion pressures in such mixtures are remarkably higher than those of gaseous fuel-air mixtures because of the high energy content of particles and the initial particle mass that transitions to explosion product gases. According to the component reactivity, detonation in particle-gas mixtures may be classified as: 1) "Heterogeneous detonation" in a reactive particle-oxidizing gas mixture 2) "Hybrid detonation" in a reactive particle-reactive gas mixture 3) "Dusty detonation" in an inert particle-reactive gas mixture Reactive particles can be fuel particles or monopropellant particles that contain both fuel and oxidizer. While dust explosions have been recognized from the beginning of coal mine exploitation, fundamental studies of heterogeneous detonation in gas-particle flow may trace their origin to the experimental work of Strauss [1] in 1968 for aluminum particle-oxygen mixtures, Nettleton and Stirling [2] in 1973 for coal dust-oxygen mixtures, Cybulski [3] in 1971 for coal dust-air mixtures, and Bartknecht [4] for other organic dust-air mixtures. Since then the fundamental heterogeneous detonation studies might be divided into two periods: global phenomenon studies between the 1970s and 1980s and transverse wave detonation studies since the late 1980s. Representative works in the first period include Wolanski and his coworkers [5,6] for coal dusts, Kauf
Report Number
DRDC-SUFFIELD-SL-2008-046 — Scientific Literature
Date of publication
16 Nov 2009
Number of Pages
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