Formal governing equations are derived for the mean orientation vector, 〈n〉f, and the mean curvature, 〈∇ · n〉f, in turbulent premixed combustion. Balance is checked to evaluate all component terms and to understand their physical implications in DNS of two test flames. The terms involving ∇T(vn + Sd) and n″(vn + Sd)″ are dominant to determine 〈n〉f through a flame brush and at the leading edge. All listed terms are relevant to determine 〈∇·n〉f, while those involving and (∇·n)″ (vn + Sd)″ become important at the edges. Different trends are observed on the dominant terms for thicker flamelets with the Karlovitz number greater than unity. Further investigation may be required to clarify relative importance of the component terms in different regimes of realistic flame conditions.
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ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
July 26–31, 2015
Seoul, South Korea
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5732-8
PROCEEDINGS PAPER
Analysis of Mean Orientation Vector and Mean Curvature in Statistically Steady Turbulent Premixed Combustion
Jaesung Kwon,
Jaesung Kwon
Pohang University of Science and Technology, Gyeongbuk, Korea
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Dohyun Kim,
Dohyun Kim
Pohang University of Science and Technology, Gyeongbuk, Korea
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Kang Y. Huh
Kang Y. Huh
Pohang University of Science and Technology, Gyeongbuk, Korea
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Jaesung Kwon
Pohang University of Science and Technology, Gyeongbuk, Korea
Dohyun Kim
Pohang University of Science and Technology, Gyeongbuk, Korea
Kang Y. Huh
Pohang University of Science and Technology, Gyeongbuk, Korea
Paper No:
AJKFluids2015-06426, V01AT06A002; 6 pages
Published Online:
April 4, 2016
Citation
Kwon, J, Kim, D, & Huh, KY. "Analysis of Mean Orientation Vector and Mean Curvature in Statistically Steady Turbulent Premixed Combustion." Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. Volume 1A: Symposia, Part 2. Seoul, South Korea. July 26–31, 2015. V01AT06A002. ASME. https://doi.org/10.1115/AJKFluids2015-06426
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