Parameters of Detonation of Hydrogen–Air Mixtures with Partly Dissociated Components

Numerical data on chemically equilibrium parameters of detonation of a stoichiometric hydrogen–air mixture and the same mixture with partly dissociated components are reported. It is found that the dissociated components (hydrogen, oxygen, and nitrogen atoms) produce a significant effect on the system parameters, especially on reduction of the critical energy of detonation initiation. As the fraction of atomic nitrogen in the hydrogen–air system increases, its explosion hazard also increases, and the initiation energy becomes even smaller than the critical energy of detonation initiation in the hydrogen–oxygen mixture. The system parameters for heated air are analyzed.