Simplified diffusion model for detailed and reduced reaction mechanisms

R.L.G.M. Eggels, L.M.T. Somers, L.P.H. Goey, de

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Abstract

A diffusion model is proposed, which simplifies the application of reduced reaction mechanisms considerably, whereas the results agree well with computations using a more detailed constant Lewis number diffusion model. Results are presented for one-dimensional premixed burner-stabilized flames using methane/air and hydrogen/air mixtures. The diffusion model is based on unit Lewis number assumptions for most of the species. Only for H and H2 non-unit Lewis numbers are applied. As a result, the mass fractions of the elements do not change in the °ame, which implies that these element mass fractions do not have to be taken into account as additional degrees of freedom for reduced reaction mechanisms.
Original languageEnglish
Title of host publicationProceedings of the third Workshop on Modelling of Chemically Reacting Systems
EditorsJ. Warnatz, F. Berendt
Publication statusPublished - 1997

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