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Journal of Coal Science and Engineering (China)

, Volume 19, Issue 4, pp 435–440 | Cite as

Detonation initiated disintegration of coal particle due to the maximum strain energy theory

  • D. M. PatadiyaEmail author
  • S. Jaisankar
  • T. S. Sheshadri
Article

Abstract

Fragmentation behaviour of coal particles subjected to detonation wave is being studied. Detonation wave is initiated by a plasma cartridge at one end of a detonation tube. Coal particles are subjected to a shock whose temperature depends on the Mach number of the detonation wave. Temperature shock is found to generate thermal stresses which may fragment the coal particles. A non-dimensional mathematical model for the heat transfer process in the coal particle is proposed. Thermal stresses are calculated at various times and radii while maximum strain energy theory is used to understand the failure behavior viz., the time, temperature and location of fracture. A physical model for coal particle fragmentation when subjected to detonation wave is also proposed. The study suggests that detonation combustion of coal is qualitatively different from conventional method.

Keywords

coal particle detonation wave spontaneous fragmentation 

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Copyright information

© The Editorial Office of Journal of Coal Science and Engineering (China) and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • D. M. Patadiya
    • 1
    Email author
  • S. Jaisankar
    • 1
  • T. S. Sheshadri
    • 1
  1. 1.Department of Aerospace EngineeringIndian Institute of ScienceBangaloreIndia

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