Abstract
Organic or metallic dust finely distributed in an oxidizing gas can sustain a deflagration which can even lead to a stable detonation in tubes of sufficient length and diameter. Extensive studies reveal that in corn starch-oxygen mixtures single head spin detonations sevelop which show a similar structure as marginal gaseous detonations. In enriched dust-oxygen mixtures single cell detonations were observed in a tube of 141 mm inside diameter. The structure of the single cell could be deduced from the records of 16 pressure transducers and 16 double response gauges giving the arrival times of the leading shock front and the combustion front. First experiments in a detonation tube on 300 mm inside diameter yielded self-sustained detonations in corn starch air mixtures at 1 bar.
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