【摘要】 发动机排气系统是飞机红外辐射的重要辐射源。通过将排气系统的流场计算模型、气体的红外辐射指数宽谱带模型(EWBM)和辐射传输方程(RTE)结合起来,发展了一种发动机排气系统红外辐射特性估算方法,并开发了相关程序。通过算例将计算结果与试验测量结果进行比较,验证了该方法在排气系统红外辐射特性数值计算与分析方面的可行性和有效性。更多还原

【Abstract】 Engine exhaust system is the important radiation source of aircraft. A numerical computation method of engine exhaust system infrared radiation and its program were developed,which combined radiative transfer equation(RTE)with plume flow field model and exponential wide band model(EWBM)of gas radiation. The comparison between the calculating result and the experiment result was made in a computation case,which confi rmed that the method and its program are feasible and effective for computation and analysis of engine exhaust system infrared radiation.更多还原