Large eddy simulation of mixing process in chemical oxygen-iodine lasers

Large eddy simulation has been preformed for the mixing analysis of chemical oxygen-iodine lasers. Traceable results for both flow field and scalar field show that large eddy simulation is a valid approach for the theoretical study of chemical flows. Compared with Reynolds averaging numerical simulation, large eddy simulation is accredited a high accuracy in capture transport processes, especially for the small scale mixing. According to the simulation results, a new method of I2 flow injection has been proposed for the mixing enhancement. With this method, the small signal gain coefficient has increased by 5%.