Detonation propagation limits in hydrogen-oxygen mixtures in a tube filled with repeated perforated plates
| Autor: | Hong-Hao Ma, Lu-Qing Wang |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Jet (fluid)
Materials science Hydrogen Renewable Energy Sustainability and the Environment Detonation velocity Detonation Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Combustion Fuel Technology chemistry Tube (container) Composite material Body orifice FOIL method |
| Zdroj: | International Journal of Hydrogen Energy. 47:645-650 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2021.10.017 |
| Popis: | This study investigated the propagation behaviors of quasi-detonations in a round tube filled with repeated perforated plates. Stoichiometric hydrogen-oxygen mixtures at different initial pressures were tested. Photodiodes and soot foil were used to record detonation velocity and cellular structure between two adjacent perforated plates. The orifice diameter ( d ), hole spacing ( l ) of the perforated plate and the obstacle spacing ( S ) were varied. The results show that the ratio of the overall jet diameter ( D 0 , defined as the diameter of the circumcircle of the orifices) to the detonation cell size ( λ ) is in the range of 12–14 for the occurrence of Chapman-Jouguet detonations. The combustion regimes are affected by l / d , i.e., smaller l / d results in higher combustion velocity. At the detonation propagation limits, the results confirm the criterion L / λ > 7, in which L = ( S + D ) / [ 2 ( 1 − 1 − B R ) ] , D and B R are, respectively, the tube diameter and blockage ratio of the perforated plate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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