Conditional Moment Closure for Modeling Combustion Processes and Structure of Oxy-Natural Gas Flame

To realistically predict the flame structure and combustion processes of oxy-fuel flames, the present study employs the conservative CMC model fully coupled with flow solver. The detailed chemistry is utilized to accurately account for thermal dissociations and nonequilibrium effects in the high-tem...

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Bibliographic Details
Published inEnergy & fuels Vol. 23; no. 9; pp. 4370 - 4377
Main Authors Kim, Gunhong, Kim, Yongmo, Joo, Yong-Jin
Format Journal Article
LanguageEnglish
Published American Chemical Society 17.09.2009
Subjects
Combustion
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Summary:To realistically predict the flame structure and combustion processes of oxy-fuel flames, the present study employs the conservative CMC model fully coupled with flow solver. The detailed chemistry is utilized to accurately account for thermal dissociations and nonequilibrium effects in the high-temperature combustion, as well as to properly include the convective and radiative effects on local flame structure. Numerical results indicate that the present approach is reasonably well capable of capturing the essential features and precise structure of oxy-fuel flames. On the basis of the predicted unconditional and conditional means, detailed discussions of oxy-fuel flame characteristics, as well as the capabilities and defects of the present approach, are given, along with the uncertainties of the experimental data.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef9004829