Self-similar accelerative propagation of expanding wrinkled flames and explosion triggering

V'Yacheslav Akkerman, Chung K. Law, Vitaly Bychkov

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

The formulation of Taylor on the self-similar propagation of an expanding spherical piston with constant velocity was extended to an instability-wrinkled deflagration front undergoing acceleration with RF∝tα, where RF is the instantaneous flame radius, t the time, and α a constant exponent. The formulation describes radial compression waves pushed by the front, trajectories of gas particles, and the explosion condition in the gas upstream of the front. The instant and position of explosion are determined for a given reaction mechanism. For a step-function induction time, analytic formulas for the explosion time and position are derived, showing their dependence on the reaction and flow parameters including thermal expansion, specific heat ratio, and acceleration of the front.

Original languageEnglish (US)
Article number026305
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume83
Issue number2
DOIs
StatePublished - Feb 11 2011

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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