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通过数值模拟方法，预估某型涡扇发动机加力燃烧室污染性能。采用ｋ－ε双方程模型描述紊流特性；采用修正的ｋ－ε－ｇ紊流燃烧模型和两步反应系统，来估算燃烧流场。其中ＣＯ和ＮＯ浓度都通过求解其紊流输运方程得到，而碳粒浓度采用多维经验分析法获取。对最大状态和加力状态等１８种飞行工况下加力室流场和污染性能进行了数值计算。结果表明：随着飞行高度和飞行马赫数的改变，污染物排放浓度也发生相应的变化，计算所得的污染物排放浓度变化规律是合理的。
The numerical simulation method is used to predict the performance of a turbofan afterburner. Turbulence characteristics were described using a k-ε two-equation model; a modified k-ε-g turbulent combustion model and a two-step reaction system were used to estimate the combustion flow field. The concentrations of CO and NO were obtained by solving the turbulent transport equation, while the carbon concentration was obtained by multi-dimensional empirical analysis. Numerical simulations were performed on the flow field and the pollution performance of the force chamber under 18 flight conditions, including the maximum state and the state of added force. The results show that with the change of flight altitude and flight Mach number, the pollutant emission concentration also changes correspondingly, and the calculated variation rule of pollutant emission concentration is reasonable.