Numerical analysis of supersonic combustion with kerosene using two different chemical reaction models

Numerical analysis of supersonic combustion with kerosene was carried out using two chemical reaction models.One is the one-step irreversible finite rate chemical reaction,and the other is the mixture-fraction equilibrium chemical reaction model combined with the discrete droplet model and probability density function at the same time to describe the interaction of turbulence and combustion.Compared the numerical results with the experimental data validated the models used in the numerical simulation.In the assumed computation conditions,compared with the irreversible finite rate chemical reaction model,the mixture-fraction equilibrium chemical reaction model combined with other models can predict exactly kerosene spray combustion in the dual-mode supersonic combustor.The integrated cavity flame holder,fuel injector,mixer and flame holder together can improve mixing and combustion of the liquid kerosene and air mixture.The combustion efficiency is 0.880 6 measured at the combustor exit.