Structure of H2/O2/N2 flames at atmospheric pressure studied by molecular beam mass spectrometry and modeling

Structure of laminar premixed flat H2/O2/N2 flames with different equivalence ratios at atmospheric pressure isinvestigated experimentally and by numerical modeling. Concentration profiles of stable species (H2, O2, H2O) as well as of H atoms and OH radicals in the flames were measured using molecular beam mass-spectrometry with soft ionization by electron impact. A good agreement between the obtained experimental data and the results of numerical simulation using three different detailed kinetic mechanisms indicates the robustness of these models in predicting the structure of hydrogen-oxygen flames at atmospheric pressure.