Effect of Species Concentrations on the Characteristics of Combustion and Detonation of Methane-Hydrogen-Oxygen-Nitrogen Mixtures
A. A. Vasil'ev1,2, V. A. Vasiliev1
1Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
Keywords: multi-fuel systems, initiation, critical energy, fuel-lean and fuel-rich systems, explosion hazard, ecology, carbon footprint reduction, engines operating on gaseous fuel species
Abstract
Data on the parameters of combustion and detonation of single-fuel systems methane-oxygen (air) and hydrogen-oxygen (air), as well as double-fuel systems methane-hydrogen-oxygen (air) with variation of the ratio between the initial species are presented. The influence of combustible system preheating on the parameters of detonation and combustion products is analyzed for fuel-lean, stoichiometric, and fuel-rich mixtures. It is found that preheating has a strong effect in fuel-lean combustible systems, which is manifested as reduction of the critical energy of initiation by several orders of magnitude.
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