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ABOUT DUST CURTAIN CRITICAL PARAMETERS, ENSURING A COMPLETE EXTINCTION OF GAS DETONATION WAVE

Journal: Bulletin of Research Center for Safety in Coal Industry (Industial Safety) (Vol.-, No. 2)

Publication Date:

Authors : ; ; ;

Page : 113-120

Keywords : GAS DETONATION; SHOCK WAVES; FLAME; DUST CURTAIN; DETONATION ATTENUATION; FLAME EXTINCTION; CRITERIA OF DETONATION EВXTINCTION;

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Abstract

The gas mixture CH4 + 2O2 + N2 attenuation of the detonation wave is studied experimentally propagating along dust air curtains with medium bulk density ρd = 2.2 ÷ 3.5 g/l at initial pressures p0 = 0.1 ÷ 0.01 MPa. Studied quartz sand fraction with a particle size δ = 250÷600, 120÷250 and 90÷120 microns. Discovered non-monotone pulsating character of detonation attenuation when beyond its leading edge occurs secondary detonation temporarily accelerating wave.

Last modified: 2017-07-28 10:58:04