CARS and Fluorescent study of ignition of H₂/O₂ mixtures upon photodissociation of O₂ molecular

¹ Central Institute of Aviation Motors, Moscow, Russia
² Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia
³ Moskow Institute of Physics and Technology, Dolgoprudny, Moscow region, Russia

^* Corresponding author: sergey.kostritsa@gmail.com

Abstract

The research is devoted to gas mixtures ignition by UV laser radiation. The dissociation of O₂ molecules by a pulse of excimer ArF laser radiation at 193-nm wavelength with formation of the chemically active oxygen atoms initiating chain reactions which cause ignition of H₂/O₂ mixture was employed. The experimental test bench was created with CARS and fluorescent techniques for experimental investigation of some peculiarities of mixture ignition and combustion caused by such photo-dissociation, at conditions typical for combustion chamber. Two-dimensional numerical modeling of combustion process in model combustion chamber, based on kinetic mechanism of H₂ oxidation including atom O(¹P) and radicals OH(A²Σ⁺), was performed.