Kinetics of I 2 and HI photodissociation with implications in flame diagnostics

摘要: This paper investigates the application of iodine (I2) tracer in reactive flows to image concentration filed by using photodissociation spectroscopy (PDS). The PDS technique first uses a short laser pulse completely photodissociate iodine-containing species into atoms, and then second atoms. Due completeness rapidity (PD), I atoms after PD represents that element seeded flow, which forms conserved scalar can be used field. feasibility is evaluated three steps. First, multi-level kinetic model was developed capture major physics relevant technique. Second, controlled experiments were conducted validate model. Third, validated applied evaluate applicable range accuracy representative hydrocarbon flames. results suggest simple approach implement I2 seeding flames, provide good across wide mixture fractions strain rates.