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Strong flame acceleration and detonation limit of hydrogen-oxygen mixture at cryogenic temperature
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Shen, Xiaobo, Fu, Wenju, Liang, Wenkai, Wen, Jennifer X., Liu, Haifeng and Law, Chung K. (2023) Strong flame acceleration and detonation limit of hydrogen-oxygen mixture at cryogenic temperature. Proceedings of the Combustion Institute, 39 (3). pp. 2967-2977. doi:10.1016/j.proci.2022.07.005 ISSN 1540-7489.
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Official URL: https://doi.org/10.1016/j.proci.2022.07.005
Abstract
A series of experiments were carried out in a closed tube at cryogenic temperature (77 K) for hydrogen-oxygen mixtures. Flame propagation speed and overpressure were measured by optical fibers and pressure sensors, respectively. The first and second shock waves were captured in the cryogenic experiments, although the shock waves always precede the flames in all cases indicating the absence of stable detonation. However, strong flame acceleration was observed for all situations, which is consistent with the prediction by expansion ratio and Zeldovich number. Besides, the tube diameter and length are also critical for flame acceleration to supersonic. All the flames in this work accelerate drastically reaching the C-J deflagration state. But at 0.4 atm, only fast flame is formed, while at higher initial pressures, the flame further accelerates to a galloping mode manifesting a near-limit detonation, which could be indicated by the stability parameter χ.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||||||||
SWORD Depositor: | Library Publications Router | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Hydrogen -- Flammability, Flame -- Simulation methods, Combustion -- Simulation methods, Low temperatures | ||||||||||||||||||
Journal or Publication Title: | Proceedings of the Combustion Institute | ||||||||||||||||||
Publisher: | Elsevier Inc. | ||||||||||||||||||
ISSN: | 1540-7489 | ||||||||||||||||||
Official Date: | 7 June 2023 | ||||||||||||||||||
Dates: |
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Volume: | 39 | ||||||||||||||||||
Number: | 3 | ||||||||||||||||||
Page Range: | pp. 2967-2977 | ||||||||||||||||||
DOI: | 10.1016/j.proci.2022.07.005 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 19 October 2022 | ||||||||||||||||||
Date of first compliant Open Access: | 20 October 2022 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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