5001 A Study on the Estimation of Chemical Species Concentration based on DNS
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In order to achieve high-efficiency combustion or clean combustion without toxic emission, it is very important to control the combustion mechanism. Thus, it is necessary to measure or estimate the temperature and the mass fractions of major or minor chemical species. With the recent progress in computational capabilities, many kinds of the direct numerical simulations of the chemical reaction have been carried out and the resulting database can be used for the prediction of combustion. But, there have been incorporated many kinds of assumption and approximation in the real simulations. Presently, the authors of this study have tested two major simulation codes, which are CEA and OPPDIF, and compared the results to quantify the effect of approximations on the resulting database.
