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Shock Waves pp 769-774 | Cite as

Initiation of stabilized detonations by projectiles

  • P. Hung
  • J. E. Shepherd
Conference paper

Abstract

A high-speed projectile in combustible gas can initiate and stabilize a detonation wave under suitable conditions [1]. In this paper, numerical simulations of projectile induced detonation waves are presented. Using a one-step irreversible reaction model, the transition from shock-induced combustion to stabilized oblique detonation is observed via numerical simulations. An analysis of this transition by means of the critical decay-rate model, which considers a balance between energy-release due to reaction, and quenching due to shock-curvature, is presented.

Keywords

Detonation Wave Critical Radius Detonation Initiation Shock Curvature Transverse Detonation Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    M.J. Kaneshige and J.E. Shepherd: ‘Oblique Detonation Stabilized on a Hypervelocity Projectile’. In: 26th Symposium (International) on Combustion, Naples, Italy, 1996, pp.3015–3022Google Scholar
  2. 2.
    M.J. Kaneshige: Gaseous Detonation Initiation and Stabilization by Hypervelocity Projectiles. PhD thesis, California Institute of Technology, California (1999)Google Scholar
  3. 3.
    H.W. Liepmann and A. Roshko: Elements of Gasdynamics. (Dover Publications, Inc. 2001)Google Scholar
  4. 4.
    J.E. Shepherd: ‘Detonation Waves and Propulsion’. In: Combustion in High-Speed Flows, Edited by J. Buckmaster et al., (Kluwer Publishers, 1994), pp.373–420Google Scholar
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    M. Arienti, P. Hung, E. Morano, J.E. Shepherd: A level set approach to Eulerian-Lagrangian coupling. J. Fluid. Mech. 185, 212 (2003)Google Scholar
  6. 6.
    P. Hung: Algorithms for Reaction Mechanism Reduction and Numerical Simulation of Detonations Initiated by Projectiles. Ph.D. Thesis, California Institute of Technology, Pasadena (2003)Google Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • P. Hung
    • 1
  • J. E. Shepherd
    • 1
  1. 1.Graduate Aeronautical LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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