Abstract
Large scale experiments on detonation initiation in gasoline-air by two different sources were carried out at stoichiometric conditions. Unconfined clouds of 1100 m3 volume generated by a special facility had a shape of semicylinder of 15–17 m in length and 6–8 m in radius. Both the charge of condensed HE and the charge of stoichiometric propane-air were used to initiate detonation in the mixture. In case of initiation by a propane-air charge the critical initiation energy was up to 7 times as large as that for HE initiation. The detonation cell size for gasoline-air was determined as 0.04–0.05 m. It was shown, that the well-known correlation between the critical energy of point blast initiation and the cell size failed for this system. The cell size obtained is close to one of propane-air, but no direct transfer of detonation from one mixture to another was observed.
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Alekseev, V.I., Dorofeev, S.B. & Sidorov, V.P. Direct initiation of detonations in unconfined gasoline sprays. Shock Waves 6, 67–71 (1996). https://doi.org/10.1007/BF02515189
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DOI: https://doi.org/10.1007/BF02515189