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


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.


coal particle detonation wave spontaneous fragmentation 


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  1. Abramowitz M, Stegun I A, 1965. Handbook of mathematical functions (8th ed.). Dover Publications.Google Scholar
  2. Carslaw H S, 1959. Conduction of heat in solids (2nd ed.). Oxford Press.Google Scholar
  3. Chirone R, Massimilla L, 1988. Primary fragmentation of coal in fluidized bed combustion. In: 22nd Symposium (International) on Combustion, the Combustion Institute, 267–277.Google Scholar
  4. Dacombe P, Pourkashanian M, Williams A, Yap L, 1999. Combustion-induced fragmentation behavior of isolated coal particles. Fuel, 78: 1847–1857.CrossRefGoogle Scholar
  5. Dean G Duffy, 2004. Transform methods for solving partial differential equation (2nd ed.). Chapman and Hall.CrossRefGoogle Scholar
  6. Enkhzhargal K H, Salomatov V V, 2010. Mathematical modeling of the heat treatment and combustion of a coal particle I, heating stage. J. of Eng. Phy. and Thermophysics, 83: 891–901.CrossRefGoogle Scholar
  7. Kreyszig E, 2006. Advanced engineering mathematics (8th ed.). John Wiley.Google Scholar
  8. No S Y, Syred N, 1990. Thermal stress and pressure effects on coal particle fragmentation and burning behavior in a cyclone combustor. J. of Inst. of Energy, 63: 195–202.Google Scholar
  9. Shigley J E, 2000. Mechanical engineering design. McGraw Hill Book Company.Google Scholar
  10. Timoshenko S P, Goodier J N, 1970. Theory of elasticity (3rd ed.). McGraw Hill Book Company.Google Scholar

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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