基于Fluent的飞机红外辐射特性建模与仿真  

Modeling and Simulation of Airplane Infrared Signature Using Fluent

作　　者：吴沿庆 廖守亿 张作宇 

机构地区：[1]火箭军工程大学测控工程系,陕西西安710025

出　　处：《红外技术》2017年第6期548-552,共5页Infrared Technology

摘　　要：建立飞机几何模型进行非结构化网格处理,基于F1uent软件对飞机在外流场作用下的气动热进行了数值模拟计算,综合考虑尾喷管、尾焰辐射对飞机机身温度的影响,获得飞机表面的温度分布数据,然后基于反向蒙特卡洛法建立飞机机身红外辐射特性计算模型,利用辐射传输方程计算尾焰红外辐照度,通过灰度转换获得飞机的红外图像。An aircraft geometric model is established for unstructured grid processing, and numerical simulation of the aerodynamic heat in the external flow field is carried out using the Fluent software. Considering the influence of nozzle and plume radiation on the aircraft temperature, the temperature distribution data of aircraft surface is obtained. The model for calculating infrared radiation of aircraft fuselage is established based on the reverse Monte Carlo method, the infrared irradiance of plume is calculated based on the radiative transfer equation, and the infrared image of the airplane is obtained using the method of gray level transformation.

关 键 词：红外辐射特性 FLUENT 非结构化网格 反向蒙特卡洛法 灰度转换 

分 类 号：TN219[电子电信—物理电子学]