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Detonation wave diffraction in H_2–O_2–Ar mixtures

Gallier, S. and Le Palud, F. and Pintgen, F. and Mével, R. and Shepherd, J. E. (2017) Detonation wave diffraction in H_2–O_2–Ar mixtures. Proceedings of the Combustion Institute, 36 (2). pp. 2781-2789. ISSN 1540-7489. https://resolver.caltech.edu/CaltechAUTHORS:20170407-121556697

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Abstract

In the present study, we have examined the diffraction of detonation in weakly unstable hydrogen–oxygen–argon mixtures. High accuracy and computational efficiency are obtained using a high-order WENO scheme together with adaptive mesh refinement, which enables handling realistic geometries with resolution at the micrometer level. Both detailed chemistry and spectroscopic models of laser induced fluorescence and chemiluminescence were included to enable a direct comparison with experimental data. Agreement was found between the experiments and the simulations in terms of detonation diffraction structure both for sub-critical and super-critical regimes. The predicted wall reflection distance is about 12–14 cell widths, in accordance with previous experimental studies. Computations show that the re-initiation distance is relatively constant, at about 12–15 cell widths, slightly above the experimental value of 11 cell widths. The predicted critical channel height is 10–11 cell widths, which differs from experiments in circular tubes but is consistent with rectangular channel results.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://doi.org/10.1016/j.proci.2016.06.090DOIArticle
http://www.sciencedirect.com/science/article/pii/S1540748916301481PublisherArticle
ORCID:
AuthorORCID
Shepherd, J. E.0000-0003-3181-9310
Alternate Title:Detonation wave diffraction in H2–O2–Ar mixtures
Additional Information:© 2016 The Combustion Institute. Published by Elsevier Inc. Received 4 December 2015, Revised 5 June 2016, Accepted 10 June 2016, Available online 30 September 2016. The authors would like to thank Alban Combe (Herakles) for his help on AMR.
Group:GALCIT
Subject Keywords:Detonation diffraction; Adaptive mesh refinement; Planar laser-induced-fluorescence; Chemiluminescence; Hydrogen–oxygen mixtures
Issue or Number:2
Record Number:CaltechAUTHORS:20170407-121556697
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170407-121556697
Official Citation:S. Gallier, F. Le Palud, F. Pintgen, R. Mével, J.E. Shepherd, Detonation wave diffraction in H2–O2–Ar mixtures, Proceedings of the Combustion Institute, Volume 36, Issue 2, 2017, Pages 2781-2789, ISSN 1540-7489, http://doi.org/10.1016/j.proci.2016.06.090. (http://www.sciencedirect.com/science/article/pii/S1540748916301481)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75844
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:07 Apr 2017 20:08
Last Modified:03 Oct 2019 16:54

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