Modeling and simulation of infrared radiation characteristics of aircraft

The Airplane 3D geometric model is established with unstructured mesh dividing. The numerical simulation of the airplane outflow field is carried out based on the commercial CFD software, the temperature distribution data of aircraft surface is obtained, the radiation process of the tail nozzle and plume radiation is modeled and calculated. The calculation model of infrared radiation characteristic of airframe is established based on Reverse Monte Carlo method, the infrared irradiance of plume is calculated based on radiative transfer equation, The infrared radiation characteristics of the aircraft is obtained, the infrared image of airplane is obtained by method of gray level transformation.