红外技术, 2014, 36 (1): 58, 网络出版: 2014-02-26
直升机排气系统尾焰红外辐射数值计算研究
Numerical Research on Plume Infrared Radiation of Helicopter Exhaust System
排气系统 直升机尾焰 红外辐射 数值计算 exhaust system helicopter plume infrared radiation numerical computation EWBM EWBM RTE RTE
摘要
尾焰是直升机红外辐射的主要来源之一。通过将直升机尾焰流场模型、气体辐射指数宽谱带模型(EWBM)和辐射传输方程( RTE)相结合,发展了一种直升机尾焰红外辐射特性估算方法。通过 2个算例从不同的角度对该方法进行了验证,结果表明:采用该方法对尾焰红外辐射进行计算与分析是可行的,能满足工程设计的需要。
Abstract
Plume is one of main radiation sources of helicopter exhaust system. A numerical method of helicopter plume infrared radiation was developed, which combined radiative transfer equation (RTE) with plume flow field model and exponential wide band model (EWBM) of gas radiation. Two computation cases were used to test the method from different aspects, which confirmed that the method is feasible for computation and analysis of plume infrared radiation, and can meet the requirement of engineering design.
马庚军, 张云飞. 直升机排气系统尾焰红外辐射数值计算研究[J]. 红外技术, 2014, 36(1): 58. MA Geng-jun, ZHANG Yun-fei. Numerical Research on Plume Infrared Radiation of Helicopter Exhaust System[J]. Infrared Technology, 2014, 36(1): 58.