Nonlinear dynamics of flame in a narrow channel with a temperature gradient

Abstract

The non-stationary behaviour of near-limit premixed flame propagating in a microchannel with temperature gradient was theoretically investigated. A one-dimensional (1D) nonlinear evolutionary equation of the flame front was obtained. The nonlinear model outlined the flame stabilization, nonlinear flame oscillations and flames with repetitive extinction and ignition processes that were observed in experiments.

Keywords:

• Flame
• Stability
• Bifurcation
• Nonlinearity
• Microcombustion

Acknowledgements

The authors would like to thank Mr T. Kataoka for interesting discussion of experimental details. This work was partially supported by the Russian Foundation for Basic Research under Grant RFBR 05-02-16408.