Dynamics of flame propagation using laser-induced spark initiation: Ignition energy measurements

Journal of Applied Physics - Tập 64 Số 3 - Trang 1499-1507 - 1988
Jack A. Syage1, E. W. Fournier1, R. Rianda1, Randolph B. Cohen1
1Aerophysics Laboratory, The Aerospace Corporation, P. O. Box 92957, Los Angeles, California 90009

Tóm tắt

A method is described for measuring low-energy ignition of combustable mixtures using nanosecond and picosecond laser-induced breakdown. Ignition studies are reported for homogeneous H2/air mixtures. The extent of flame inhibition in H2/air was investigated as a function of CO2 concentration. Our electrodeless spark ignition results are compared with earlier work using electric discharge ignition. A simple model for flame ignition is advanced, based on the temporal and energy density characteristics of the source energy. Implications of laser-induced spark ignition in homogeneous fuel mixtures to the molecular dynamics of flame propagation are discussed.

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