Direct initiation of detonations in unconfined gasoline sprays |
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Authors: | V I Alekseev S B Dorofeev V P Sidorov |
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Institution: | (1) Applied Chemical Physics Institute, Russian Research Centre “Kurchatov Institute”, Moscow, 123182, Russia, RU |
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Abstract: | Large scale experiments on detonation initiation in gasoline-air by two different sources were carried out at stoichiometric
conditions. Unconfined clouds of 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.
Received 10 March 1995 / Accepted 12 March 1995 |
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Keywords: | :Detonation initiation Gasoline spray |
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