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Cyclic deflagration-to-detonation transition in the flow-type combustion chamber of a pulse-detonation burner

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Abstract

The possibility of realization of a rapid cyclic deflagration-to-detonation transition (DDT) with a frequency of up to 2 Hz under conditions of high-velocity flow (∼10 m/s) and separate supply of the combustible mixture components (methane and air) in a tube, 5.5 m in length and 150 mm in diameter, with an open end at a low ignition energy (∼1 J) is for the first time demonstrated. It is shown that such a tube with turbulizing obstacles of special shape and placement can ensure reliable DDT at a distance of 3–4 m from the ignition source within ΔτDDT ≤ 20 ms after ignition. The results will be used in the development of a new type of industrial burner—a pulse-detonation burner for high-rate heating and fragmentation, combining thermal and shock-wave (mechanical) impacts on the treated object.

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References

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Correspondence to S. M. Frolov.

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Original Russian Text © S.M. Frolov, V.S. Aksenov, K.A. Avdeev, A.A. Borisov, V.S. Ivanov, A.S. Koval’, S.N. Medvedev, V.A. Smetanyuk, F.S. Frolov, I.O. Shamshin, 2013, published in Khimicheskaya Fizika, 2013, Vol. 32, No. 3, pp. 39–43.

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Frolov, S.M., Aksenov, V.S., Avdeev, K.A. et al. Cyclic deflagration-to-detonation transition in the flow-type combustion chamber of a pulse-detonation burner. Russ. J. Phys. Chem. B 7, 137–141 (2013). https://doi.org/10.1134/S1990793113020024

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  • DOI: https://doi.org/10.1134/S1990793113020024

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