Abstract
On the basis of the two-phase two-velocity model of a reactive gas-dispersion medium, the authors have formulated a mathematical model of spark ignition of a bidispersed air suspension of coal dust. This model takes account of the mixture′s motion due to the expansion of the gas in its heating. Results of the numerical solution of the problem have been presented. The influence of the size of coal-dust particles on the minimum energy of spark ignition of the air suspension has been analyzed. A comparison of the calculation results and the existing experimental data has shown a satisfactory agreement between them.
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