A Simple Theory of Multicomponent Diffusion and Simulation of the Combustion of a Stoichiometric H2/O2 Mixture
Sabdenov K.O. Erzada M. Suleimenov A.T.
February 2022Pleiades journals
Technical Physics
2022#67Issue 2152 - 160 pp.
Abstract: A theory of multicomponent diffusion based on Fick’s law is proposed, in which, when writing the Maxwell–Stefan equations, a multicomponent mixture appears to consist of two components: the isolated substance and all the others with average characteristics. The number of diffusion coefficients is significantly reduced, a method for calculating them is indicated, and they strongly depend on the concentration of the mixture components. Based on the results of this theory, we simulated the combustion of a stoichiometric H2/O2 mixture. For each component, large chemical works are carried out with variable signs, but in total they partially destroy each other. The analysis of the effect of changing the composition of the mixture on the transfer processes, temperature, and combustion rate was carried out.
burning rate , chemical work , gas mixtures , molar mass , multicomponent diffusion
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Eurasian National University, Nur-Sultan, 010008, Kazakhstan
Eurasian National University
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