Abstract
An important flrst step in any chemical kinetic mechanism reduction is the extraction of a skeletal reaction model from a detailed reaction model consisting of over 500 reactions. Our previous work has shown that the skeletal models developed based on ignition and ∞ame propagation analyses of ethylene-air mixtures worked poorly in predicting the extinction condition of non-premixed mixtures. 1 In order to address this deflciency, sensitivity coe‐cients of ∞ame extinction of non-premixed ∞ames with respect to the reaction rate parameter perturbations are evaluated and implemented in the reduction procedure described here. To our knowledge, such an analysis of non-premixed ∞ames has never been considered previously. By combining sensitivity indices for ignition, propagation, and extinction, the development of comprehensive sensitivity index and extraction of an optimal skeletal reaction model for fuel-air mixtures consisting of ethylene/methane is the focus of this work.
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