| Summary: | Based on computational simulation and computational fluid dynamics (CFD), this paper analyzes and compares the effects of incoming flow with clean air and air containing CO2/H2O pollution components on the performance of supersonic combustion of hydrogen fuel and ethylene fuel in the combustor through simulation and calculation. The research conclusion shows that the pressure change in the combustor obtained by the numerical simulation results and the theoretical calculation result are basically the same, indicating that both can distinguish the effect of pollution components on the performance of supersonic combustion. For hydrogen fuel, numerical simulation and calculation results show that the monomer and mixed pollution components have a strong inhibiting effect on the increase of pressure in the combustor, and the decline of pressure is nonlinear. Besides, the presence of pollutants can change the operating model in the combustor. For ethylene fuel, pollutants can lead to a decrease in the mass fraction of the chemical reaction product— H2O. Both hydrogen fuel and ethylene fuel will lead to a decrease in the temperature in the combustor and a reduction in combustion efficiency.
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