摘要
研究并建立了海面舰船的红外理论模型，较为完整地考虑了周围环境对物体及物体各部分之间的相互作用，包括太阳辐射、海／天背景辐射、海／空气的对流，以及船体各部分的传导和相互辐射（考虑多次反射）；同时考虑了舰船内舱对船壁的辐射和对流作用；采用蒙特卡洛方法，引入准随机数解决了复杂几何结构表面非漫反射灰体的辐射计算．研究计算了烟囱内的流动、温度场和红外辐射．针对某舰船，利用计算机技术实现了船体的三维构型、温度场、红外辐射场的计算，得到了舰船红外模拟热像．
An IR theoretical model of the ship was presented. The effect of the environment on the object, and the interaction between different parts of the object were investigated. The thermal model includes solar heating, sea/sky radiation, sea/air convection, the conduction between different parts of the ship and the surface radiation (which accounts for multiple diffuse reflections); the radiation and convection of the hold were also included. Based on the Monte Carlo method, the quasi random number was introduced to the calculation of radiant heat exchange between non diffuse gray surface of complex geometrical structure. The fluid, temperature field and IR emission of hot gas in the funnel were investigated and calculated. For a ship, the 3D surface geometry a target was defined, the temperature and IR emission field were calculated, and the simulated IR thermal image was presented.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第2期129-133,共5页
Journal of Infrared and Millimeter Waves
关键词
红外成像
模拟热像
温度场分布
准随机数
舰船
infrared, simulated thermal image, temperature field distribution, Monte Carlo method, quasi random number.
