Effect of chemically active additives on the detonation wave velocity and the detonation limits in lean mixtures

On the basis of the formalism of the one-dimensional theory of detonation with heat losses and the theory of branched-chain processes by the example of the oxidation of hydrogen-air mixtures in the presence of a hydrocarbon additive, it is shown that taking into account the reactions of termination of reaction chains on molecules of the additive, trimolecular termination, and also chain oxidation of the hydrocarbon additive allows one to qualitatively describe both the passage of the detonation velocity through a maximum with an increase in the additive content of a lean mixture and the existence of two concentration limits of detonation.