Deflagration-to-detonation transition in air-binary fuel mixtures in an obstacle-laden channel |
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Authors: | S. P. Medvedev A. N. Polenov S. V. Khomik B. E. Gel’fand |
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Affiliation: | 1.Semenov Institute of Chemical Physics,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | The results of studying deflagration-to-detonation transition (DDT) in hydrogen-methane (propane)-air in a detonation tube with uniformly spaced annular obstacles are presented. The effect of the scaling factor on the DDT was identified. The boundary between fast deflagration and detonation regimes was calculated using a criterion based on a comparison of the gasdynamic and chemical characteristic times for the ignition of the mixture behind the shock wave reflected from an obstacle. |
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