Реферат: The problem of a priori determination of the kinetic coefficients for detonation conditions has not yet been solved. This state is due, among other things, to the difficulties of experimentally determining the kinetic parameters for detonation conditions due to the fact that the structure of the detonation flow, due to its strong local inhomogeneity and nonstationarity, differs greatly from classical model representations (one-dimensional Michelson–Chapman–Jouguet and Grib– Zel'dovich–Neumann–Dering with smooth fronts). The assumption of homogeneity and constancy of the parameters up to the moment of ignition of the mixture does not fit well with the idea that during τ, due to an increase in the number of particles in the system due to the decay of the initial particles and the formation of intermediate radicals, the molar concentrations of the initial components cannot be constant. Therefore, instead of the assumed Сi=const, the real concentrations c in the denominator of the Arrhenius formula should be noticeably smaller, which will lead to an increase in τ. Only taking this into account makes it possible to significantly bring the experimental and calculated data closer together.

Библиографическая ссылка: Vasil'ev A.A.
Is the Arrhenius Formula for Ignition Delay Exact for Detonation?
X International Seminars on Flame Structures 09-13 Oct 2023