An updated comprehensive kinetic model of hydrogen combustion

Abstract

A comprehensively tested H2/O2 chemical kinetic mechanism based on Mueller et al. [1] and recently published kinetic and thermodynamic information is presented. The revised mechanism is validated against a wide range of experimental conditions, including those found in shock tubes, flow reactors, and laminar premixed flame. Excellent agreement of the model predictions with the experimental observations demonstrates the mechanism is comprehensive and has good predictive capabilities for different experimental systems, including new results published subsequent to the work of Mueller et al. [1], particularly high pressure laminar flame speed and shock tube ignition results. The reaction H+OH+M is found to be primarily significant only to laminar flame speed propagation predictions at high pressure. All experimental hydrogen flame speed observations can be adequately fit using any of the several transport coefficient estimates presently available in the literature for the hydrogen oxygen system simply by adjusting the rate parameters for this reaction within their present uncertainties