EVOLUTION OF A FAST FLAME BEHIND AN INDUCTION ZONE

It has been shown that pressure waves can have a large effect on the b urning rate of flames. In this paper, the evolution of convection-driv en fast flame, which is acoustically linked to a shock wave via an ind uction zone, is examined in detail. It is found that there is positive feedback mechanism and the asymptotic model breaks down as blow up oc curs. Comparison is made between the case of a piston driving a shock wave into a combustible atmosphere with these studies of a shock wave passing through an existing premixed flame.