Thermal emission properties of gas medium with nonlinear temperature distribution
梯度温度气体介质的热辐射传递特性研究

The shock layer of high-speed missiles is highly uneven gas medium with graded temperature distribution. A radiative transfer solution method of it was developed in this paper. With the idea of discrete transfer and the light transmission model, the heat radiation strength calculation model of shock layer is established by the line of sight path along the seeker detectors . The relations between the shock wave thermal radiation noise and flow parameters was also analyzed and the empirical formula is given. The results show that for infrared band, the relationship between thermal radiation noise and the Mach number is close and the radiation alter very little when flight height (in atmosphere) change.