Abstract
The possibility of using a high-voltage nanosecond discharge to initiate gaseous detonation was shown experimentally. The experiments were performed with C3H8 + 5O2 and C3H8/C4H10 + 5O2 + xN2 (x = 0–10) mixtures at an initial pressure of 0.15–0.6 atm. The discharge was initiated by a voltage pulse of duration ≈60 nsec and amplitude 4–70 kV; the energy input was 0.07–12 J. Under the conditions of the experiment, three flame propagation regimes were observed: slow combustion, transient detonation, and Chapman—Jouguet detonation. For the initiation of the C3H8+ 5O2 mixture in a tube of diameter 140 mm, the length of the deflagration to detonation transition was 130 mm at an initial pressure of 0.3 atm and an initiation energy of 70 mJ.
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Translated from Fizika Goreniya i Vzryva, Vol. 42, No. 2, pp. 80–90, March–April, 2006.
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Zhukov, V.P., Starikovskii, A.Y. Effect of a nanosecond gas discharge on deflagration to detonation transition. Combust Explos Shock Waves 42, 195–204 (2006). https://doi.org/10.1007/s10573-006-0038-2
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DOI: https://doi.org/10.1007/s10573-006-0038-2