Three-dimensional direct numerical simulation (DNS) with a detailed kinetic mechanism has been conducted for statistically-planar turbulent flame and turbulent V-flame of hydrogen–air mixture to clarify the effects of mean flow velocity on principal strain rates at flame front and on flame geometry. Reynolds numbers based on Taylor micro scale and turbulent intensity are selected to 60.8 and 97.1, and mean flow velocities for V-flame are 10 and 20 times laminar burning velocity. From results of DNS, eigenvalues and eigenvectors of strain tensor are evaluated to investigate characteristics of strain field near flame and flame normal alignments with the principal axes of strain in detail. It has been revealed that Reynolds number affects both magnitude of strain rates and alignment between flame normal and principal axis of strain, and that the magnitude of mean flow velocity affects flame normal alignments in turbulent V-flame.
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ASME/JSME 2011 8th Thermal Engineering Joint Conference
March 13–17, 2011
Honolulu, Hawaii, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-3892-1
PROCEEDINGS PAPER
Flow-Geometry and Reynolds-Number Effects on Flame-Turbulence Interactions
Yuki Minamoto,
Yuki Minamoto
Tokyo Institute of Technology, Tokyo, Japan
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Yuzuru Nada,
Yuzuru Nada
Toyohashi University of Technology, Aichi, Japan
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Masayasu Shimura,
Masayasu Shimura
Tokyo Institute of Technology, Tokyo, Japan
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Naoya Fukushima,
Naoya Fukushima
Tokyo Institute of Technology, Tokyo, Japan
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Youngsam Shim,
Youngsam Shim
Tokyo Institute of Technology, Tokyo, Japan
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Mamoru Tanahashi,
Mamoru Tanahashi
Tokyo Institute of Technology, Tokyo, Japan
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Toshio Miyauchi
Toshio Miyauchi
Tokyo Institute of Technology, Tokyo, Japan
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Yuki Minamoto
Tokyo Institute of Technology, Tokyo, Japan
Yuzuru Nada
Toyohashi University of Technology, Aichi, Japan
Masayasu Shimura
Tokyo Institute of Technology, Tokyo, Japan
Naoya Fukushima
Tokyo Institute of Technology, Tokyo, Japan
Youngsam Shim
Tokyo Institute of Technology, Tokyo, Japan
Mamoru Tanahashi
Tokyo Institute of Technology, Tokyo, Japan
Toshio Miyauchi
Tokyo Institute of Technology, Tokyo, Japan
Paper No:
AJTEC2011-44472, T20112; 7 pages
Published Online:
March 1, 2011
Citation
Minamoto, Y, Nada, Y, Shimura, M, Fukushima, N, Shim, Y, Tanahashi, M, & Miyauchi, T. "Flow-Geometry and Reynolds-Number Effects on Flame-Turbulence Interactions." Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASME/JSME 2011 8th Thermal Engineering Joint Conference. Honolulu, Hawaii, USA. March 13–17, 2011. T20112. ASME. https://doi.org/10.1115/AJTEC2011-44472
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