Effect of species concentrations on the characteristics of combustion and detonation of methane-hydrogen-oxygen-nitrogen mixtures

A. A. Vasil'ev^ab, V. A. Vasil'ev<sup>a

a</sup> Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk
^b Novosibirsk State University

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.

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.

UDC: 534.222.2+536.46+661.215.1

Received: 18.08.2023
Revised: 22.09.2023
Accepted: 11.10.2023

DOI: 10.15372/FGV2023.9379

 English version: Combustion, Explosion and Shock Waves, 2025, 61:1, 1–10

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