Simple Kinetics and Detonation Wave Structure in a Methane–Air Mixture
A. V. Fedorov1, P. A. Fomin2, D. A. Tropin1
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2Lavrent'ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: detonation, detonation wave structure, reduced two-stage kinetics, methane–air mixture
Abstract
A reduced two-stage model of detonation combustion of methane in oxygen and air for equimolar and fuel-lean mixtures is proposed. One-dimensional structures of the detonation wave are calculated for different ratios of the fuel and oxidizer corresponding to the overdriven and Chapman–Jouguet regimes. A comparison of the calculated dependences of the detonation velocity on the methane concentration in the methane–air mixture with available published data reveals their reasonable agreement.
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