Numerical simulation of ignition of a hydrogen-oxygen mixture in view of electronically excited components

Abstract

Results are given of numerical simulation of the kinetics of ignition of a stoichiometric hydrogenoxygen mixture diluted with argon behind the front of an incident shock wave. The simulation involves the use of a data base for rate constants of chemical reactions, which includes processes in view of electronically excited components OH*(2Σ+), O*(1 D), and O*2(1Δ). The calculated values of time required to reach the maximum of intensity of radiation of excited OH* radical at wavelength λ = 306.4 nm are in adequate agreement with the experimentally measured values. The contributions made by various reactions to the production of components of the gas ixture are determined.