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Combustion, Explosion, and Shock Waves

, Volume 54, Issue 2, pp 179–188 | Cite as

Numerical Simulation of Spark Ignition of a Coal Dust–Air Mixture

  • K. M. Moiseeva
  • A. Yu. Krainov
Article
  • 23 Downloads

Abstract

This paper describes the development of a physico-mathematical model of spark ignition of a coal dust–air mixture, which is based on a two-phase two-speed model of reacting gas-dispersion medium. There are the results of numerical solution on the problem of spark ignition of a coal dust–air mixture with allowance for its movement caused by gas expansion during heating. The relationships between the minimal energy of spark ignition of a coal dust–air mixture and the mass concentration and particle size of coal dust are obtained. The particle size increases along with the minimal energy of spark ignition. There is mass concentration of coal dust particles with which the energy of spark ignition is minimal. The comparison of the results of calculations of the minimal energy of spark ignition of coal dust with known experimental data yields their satisfactory agreement.

Keywords

coal dust–air mixture minimum energy of spark ignition numerical simulation 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Tomsk State UniversityTomskRussia

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