DYNAMICAL ASPECTS OF PULSED FLAMES

A one-dimensional model for the so-called pulsed flames, which are emp loyed for molecular detection and in some combustion related measureme nts, is formulated and studied numerically. It is shown that the pulse d flame is in fact a highly nonlinear realization of the classical osc illatory instability of the anchored flame. Yet to maintain the pulsed flame within the detector's tube one may need an external heat source adapting the pulsations amplitude to the tube length.