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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2012, Volume 53, Issue 5, Pages 3–12
(Mi pmtf1395)
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This article is cited in 1 scientific paper (total in 1 paper)
Structure of the detonation wave front in a mixture of nitromethane with acetone
S. N. Buravova Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moskovskaya oblast’, 142432, Russia
Abstract:
It is shown that the leading front of an inhomogeneous detonation wave is a shock wave in which wave structures of the type of triple shock configurations are moving. It was experimentally found that the reaction in these inhomogeneities occurs in oblique shock waves. The reaction sites at the wave front are ring-shaped. In a 75: 25 mixture of nitromethane with acetone, up to 70% of the front surface is occupied by the reaction at the sites in the wave front. Measurements of the mass velocity profile indicate that afterburning takes place in the unloading area behind the Jouguet plane. Calculations of the heat release in the reaction mixture with a decrease in the mass velocity indicate that the material that have not reacted in the inhomogeneities can be ignited in the induction zone. It is suggested that the adiabatic flashes are a mechanism that generates inhomogeneities in the detonation wave front.
Keywords:
detonation, nitromethane, non-one-dimensional structure of the front, shock wave, reaction sites, chemical transformation, triple shock configuration, ignition, initiation.
Received: 02.08.2011 Accepted: 17.11.2011
Citation:
S. N. Buravova, “Structure of the detonation wave front in a mixture of nitromethane with acetone”, Prikl. Mekh. Tekh. Fiz., 53:5 (2012), 3–12; J. Appl. Mech. Tech. Phys., 53:5 (2012), 633–641
Linking options:
https://www.mathnet.ru/eng/pmtf1395 https://www.mathnet.ru/eng/pmtf/v53/i5/p3
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