The presented work aims to improve CFD explosion modeling for lean hydrogen-air mixtures on under-resolved grids. Validation data is obtained from an entirely closed laboratory scale explosion channel (GraVent facility). Investigated hydrogen-air concentrations range from 6 to 19 vol.-%. Initial conditions are p = 1 atm and T = 293 K. Two highly time-resolved optical measurement techniques are applied simultaneously: (1) 10 kHz shadowgraphy captures line-of-sight integrated macroscopic flame propagation; and (2) 20 kHz OH-PLIF (planar laser-induced fluorescence of the OH radical) resolves microscopic flame topology without line-of-sight integration. This paper presents the experiment, measurement techniques, data evaluation methods and initial results. The evaluation methods encompass the determination of flame tip velocity over distance and a detailed time-resolved quantification of flame topology based on OH-PLIF images. One parameter is the length of wrinkled flame fronts in the OH-PLIF plane obtained through automated post-processing. It reveals the expected enlargement of flame surface area by instabilities on microscopic level. A strong effect of mixture composition is observed.
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2016 24th International Conference on Nuclear Engineering
June 26–30, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5005-3
PROCEEDINGS PAPER
Application of High-Speed OH-PLIF Technique for Improvement of Lean Hydrogen-Air Combustion Modeling
Peter Katzy,
Peter Katzy
Technische Universität München, Garching, Germany
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Lorenz R. Boeck,
Lorenz R. Boeck
Technische Universität München, Garching, Germany
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Josef Hasslberger,
Josef Hasslberger
Technische Universität München, Garching, Germany
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Thomas Sattelmayer
Thomas Sattelmayer
Technische Universität München, Garching, Germany
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Peter Katzy
Technische Universität München, Garching, Germany
Lorenz R. Boeck
Technische Universität München, Garching, Germany
Josef Hasslberger
Technische Universität München, Garching, Germany
Thomas Sattelmayer
Technische Universität München, Garching, Germany
Paper No:
ICONE24-60130, V005T15A005; 10 pages
Published Online:
October 25, 2016
Citation
Katzy, P, Boeck, LR, Hasslberger, J, & Sattelmayer, T. "Application of High-Speed OH-PLIF Technique for Improvement of Lean Hydrogen-Air Combustion Modeling." Proceedings of the 2016 24th International Conference on Nuclear Engineering. Volume 5: Student Paper Competition. Charlotte, North Carolina, USA. June 26–30, 2016. V005T15A005. ASME. https://doi.org/10.1115/ICONE24-60130
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