Abstract
A possibility of using some kinetic models for the description of detonation of a gaseous hydrogen–air mixture is justified. A hierarchy of mathematical models from the simplest model of combustion under static conditions to the model of unsteady nonequilibrium gas dynamics is numerically constructed. Verification is performed on the basis of experimental data on the ignition delay time as a function of temperature and on the detonation wave velocity as a function of dilution of the mixture by argon or nitrogen. A mathematical technology for the description of cellular detonation propagation in channels of various engineering devices is developed on the basis of detailed and reduced kinetic mechanisms of nonequilibrium chemical transformations within the framework of the ANSYS Fluent commercial software system. It is demonstrated that the cell size in a mixture diluted by argon by 92% in a channel 30 mm wide is in good agreement with experimental data.
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Original Russian Text © I.A. Bedarev, K.V. Rylova, A.V. Fedorov.
Published in Fizika Goreniya i Vzryva, Vol. 51, No. 5, pp. 22–33, September–October, 2015.
Original article submitted May 23, 2014.
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Bedarev, I.A., Rylova, K.V. & Fedorov, A.V. Application of detailed and reduced kinetic schemes for the description of detonation of diluted hydrogen–air mixtures. Combust Explos Shock Waves 51, 528–539 (2015). https://doi.org/10.1134/S0010508215050032
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DOI: https://doi.org/10.1134/S0010508215050032