Computation of mixing flowfield of chemical oxygen-iodine laser with FLUENT software

The computational simulations of the mixing flowfield of supersonic chemical oxygeniodine laser (COIL) using FLUENT (CFD) computation of fluid dynamics commercial software have been performed. The distribution of the averaged small signal gain along the downstream for nozzle profiles, orifices locations, pressure of secondary flow, O2(1Δ) yields, content of water vapor and dilute gases was caculated. The numerical simulation for two experimental conditions of Dalian Institute of Chemical Physics show that the trend of the computational averaged small signal gain coincides with the measured output mole power．