Abstract
Abstract : The propensity of hydrocarbons to form soot in a diffusion flame is correlated here for the first time againt various topological indices. Two of the indices, the hydrogen deficiency index and the Balaban distance sum connectivity index, were found to be especially valuable for correlational purposes. For a total of 98 hydrocarbon fuel molecules, of differing types, regression analyses yielded good correlations between the threshold soot indices (TSIs) for diffusion flames and these two indices. An equation which can be used to estimate TSI values in fuel molecules is presented. Keywords include: Topological indices, Soot formation, Soot fuels.
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