Analysis of flame acceleration induced by wall friction in open tubes

V'yacheslav Akkerman, Chung K. Law, Vitaly Bychkov, Lars Erik Eriksson

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Spontaneous flame acceleration leading to explosion triggering in open tubes/channels due to wall friction was analytically and computationally studied. It was first demonstrated that the acceleration is affected when the thermal expansion across the flame exceeds a critical value depending on the combustion configuration. For the axisymmetric flame propagation in cylindrical tubes with both ends open, a theory of the initial (exponential) stage of flame acceleration in the quasi-isobaric limit was developed and substantiated by extensive numerical simulation of the hydrodynamics and combustion with an Arrhenius reaction. The dynamics of the flame shape, velocity, and acceleration rate, as well as the velocity profile ahead and behind the flame, have been determined.

Original languageEnglish (US)
Article number009005PHF
Pages (from-to)1-14
Number of pages14
JournalPhysics of Fluids
Volume22
Issue number5
DOIs
StatePublished - May 2010

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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