Wrinkling of spherically expanding flames

Document Type

Article

Publication Date

1-1-2002

Abstract

The onset of instability and subsequent development of cells on spherically expanding flames isexamined theoretically. The model used accounts for both hydrodynamic and diffusive-thermal effects and, incontrast to earlier theories, is valid for variable transport properties over a wide range of equivalence ratios. The analysis yields predictions for a number of flame properties, including growth rate of small disturbances, critical flame size for the instability onset, cell size beyond the threshold, and an estimate of the speed of the developing turbulent flame. It is shown that results using the more realistic temperature-dependent transport coefficients are more commensurate with experimental data concerning the critical conditions, that is, flame size or Peclet number, at the transition from one burning regime to another.

Identifier

84915751798 (Scopus)

Publication Title

Proceedings of the Combustion Institute

External Full Text Location

https://doi.org/10.1016/s1540-7489(02)80187-0

ISSN

15407489

First Page

1527

Last Page

1535

Issue

2

Volume

29

Fund Ref

National Science Foundation

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