e3b3215b-a316-4081-b87b-09a9a9153ab020250805121805623wseas:wseasmdt@crossref.orgMDT DepositInternational Journal of Chemical Engineering and Materials2945-051910.37394/232031https://wseas.com/journals/cem/32620253262025410.37394/232031.2025.4https://wseas.com/journals/cem/2025.phpOn the Detonation of a Methane-oxygen Mixture in a Plane-radial ChamberD. V.VoroninLavrentyev Institute of Hydrodynamics of SB RAS, Lavrentyev str, 15, 630090 Novosibirsk RUSSIANumerical modeling of the formation, subsequent ignition, and development of the detonation process in methane-oxygen mixtures within a flat radial chamber is performed using the Reynolds equations. Fuel and oxidizer are supplied separately to the chamber through valves in its rigid walls. The main equations are based on two-dimensional, non-stationary conservation laws for mass, momentum, and energy of a compressible, chemically reacting gas. The model accounts for turbulence and diffusion processes in multicomponent mixtures. It is shown that a self-sustaining detonation process occurs in the chamber even at relatively small shock wave amplitudes. The detonation wave parameters are largely determined by the mixing rate of the reacting components and the ability to reach ignition concentration limits.852025852025911007https://wseas.com/journals/cem/2025/a14cem-007(2025).pdf10.37394/232031.2025.4.7https://wseas.com/journals/cem/2025/a14cem-007(2025).pdfVojciechowski, B. W. Stationary detonation, Dokl. USSR Academy of sciences. 1959. Vol. 129, No. 6. P. 1254 - 1256. Bykovskii F. A., Zhdan S. A. Continuous spin detonation. Novosibirsk. Publishing house of SB RAS. 2013. Frolov, S. M., Ivanov V. S and others. The afterburning of the detonation combustion chamber. Reports of the Russian Academy of Sciences, 2020, vol. 490, p. 82-86. 10.37394/232013.2023.18.11Voronin D.V. On the optimal choice of type of combustion chamber for the initiation of gas detonation - WSEAS Transactions on Fluid Mechanics. 2023. V.18. P.109-113. DOI: 10.37394/232013.2023.18.11. Anderson D., Tannehill J., Pletcher R. Computational fluid mechanics and heat transfer, New York, Hemisphere, 1984. Voronin D. V. On the self-ignition of gas in the flat vortex camera. Physics of combustion and explosion. 2017. Vol. 53, No. 5. P. 24-30. Loitsyanskii L. G. Mechanics of Liquids and Gases. Pergamon Press, Oxford, New York, 1966. Belotsercovskii O.M., Davydov Yu.M. Method of large particles in gas dynamics, Moscow, Nauka, 1984.