典型涡扇双发动机排气系统红外辐射特征数值分析  

Numerical Simulation of Radiation Intensity of Typical Turbofan Double Engine Exhaust System

作　　者：苏浩男 娄宗勇 李大伟 陈立海 SU Hao-nan;LOU Zong-yong;LI Da-wei;CHEN Li-hai(Hebei Petroleum University of Technology Civil-military Integration Demonstration Base,Chengde 067000,China)

机构地区：[1]河北石油职业技术大学、河北省军民融合示范基地,河北承德067000

出　　处：《承德石油高等专科学校学报》2022年第6期57-64,87,共9页Journal of Chengde Petroleum College

基　　金：中央引导地方科技发展资金(226Z0101G)。

摘　　要：以典型涡扇发动机双发排气系统为例,研究其红外辐射特征。首先,利用流体仿真软件对双发排气系统的流场进行了数值模拟,然后采用RMCM方法计算双发排气系统的红外辐射特征。结果表明:双发排气系统的红外辐射并不是单发排气系统的简单叠加;加装波瓣混合器可显著降低双发排气系统的红外辐射,辐射强度最大降低48.76%,锁定距离最大降低29.73%。Based on the typical turbofan engine exhaust system as an example, study the infrared radiation characteristics. The distribution of the characteristics of flow field were obtained by CFD. The IR characteristics of these models were calculated by Reverse Monte Carlo method(RMCM). The results show that, infrared radiation of double engine exhaust system is not a simple superposition of single exhaust system. Lobe mixer can significantly reduce the exhaust system of infrared radiation,radiation intensity by 48. 76%, biggest lock distance reduced by 29. 73%.

关 键 词：双发动机排气系统 红外辐射 波瓣混合器 

分 类 号：V235[航空宇航科学与技术—航空宇航推进理论与工程]