Abstract
A comparative study of stochastic modeling of turbulent combustion has been conducted in the configuration of jet diffusion flame. Flamelet model, multivariate presumed probability density function (PDF) model, and PDF model are evaluated in terms of numerical accuracy. Fuel is a mixture of hydrogen and nitrogen. A fast chemistry is assumed in the flamelet model, a one-step irreversible reaction in the multivariate presumed PDF, and a detailed chemistry in the PDF model. The flamelet model overestimates the reaction than the others but shows an agreement with experiment results. This is attributable to turbulent models employed here. Therefore, the accuracy of combustion modeling strongly depends on the turbulent model of the flow field.
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