Turbulent jet initiation of detonation in hydrogen-air mixtures |
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Authors: | S B Dorofeev A V Bezmelnitsin V P Sidorov J G Yankin I D Matsukov |
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Institution: | (1) Applied Chemical Physics Institute, Russian Research Centre “Kurchatov Institute”, 123182 Moscow, Russia |
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Abstract: | Large scale experiments (50 m3) have been carried out on the initiation of detonation by means of a jet of hot combustion products. The effects of hydrogen
concentration (18–30% vol.), jet orifice diameter (100–400 mm), and the mixture composition in constant volume explosion chamber
(25–50%) were investigated. Both high enough hydrogen concentration and large enough jet size are necessary for detonation
initiation. The minimum values are within the ranges of 20 to 25% vol. H2, and of 100 to 200 mm correspondingly. A minimum ratio of jet size and mixture cell width 12–13 is required for detonation
initiation. |
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Keywords: | Detonation Initiation Turbulent jet |
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