Abstract
The time-dependent approach for computing the speed of plane laminar flames in one dimension has been extended by providing a more general formulation which allows the computation of cylindrical and spherical flames in addition to planar flames. A rational approach for obtaining minimum ignition energies of flammable mixtures based on multireaction kinetics has been presented. Examples of flame speed as well as ignition energy for both planar and spherical flames were calculated using a computer program based on the formulation. An appreciable decrease in flame speed was computed when the flame radius was of the same order as the flame thickness. Good agreement has been obtained with (1) Spalding's computation of the hydrazine decomposition flame and (2) experlmental results for the ozone decomposition flame.
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