风洞环境下飞行器模型侧喷喷流红外辐射特性数值模拟分析及测量修正方法  

Numerical Simulation Analysis and Measurement Correction Method of Infrared Radiation Characteristics of Side Jet of Aircraft Model in Wind Tunnel Environment

作　　者：张乐乐 施小娟[1] 吉洪湖[1] ZHANG Le-le;SHI Xiao-juan;JI Hong-hu(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《红外》2025年第2期36-48,共13页Infrared

摘　　要：研究风洞环境下飞行器模型侧喷喷流红外辐射特性及测量修正方法对开展风洞试验具有重要意义。在风洞环境中对飞行器侧喷喷流的红外辐射进行测量时,风洞内壁面和飞行器模型壁面产生的辐射是喷流红外测量的干扰源。通过求解质量方程、动量方程、能量方程和组分传输方程等,对风洞环境下飞行器模型侧喷喷流流场及3~5μm波段各个辐射源的红外辐射特性进行了数值模拟。研究结果表明,随着试验段进口马赫数Ma_(in)的增大,风洞内壁面和飞行器模型壁面的辐射强度增加,侧喷喷流的积分辐射强度先减小后增大。通过对各个辐射源的辐射特性进行分析,掌握了各个辐射源的积分辐射强度随Ma_(in)的变化规律,最终得到了适用于本文模型及边界条件的风洞环境下飞行器模型侧喷喷流红外辐射特性修正方法。Studying the infrared radiation characteristics of the side jet of an aircraft model in a wind tunnel environment and its measurement correction methods is of great significance for conducting wind tunnel tests.When measuring the infrared radiation of the side jet of an aircraft in a wind tunnel environment,the radiation generated by the inner wall of the wind tunnel and the wall of the aircraft model is an interference source for the infrared measurement of the jet.By solving the mass equation,momentum equation,energy equation and component transfer equation,the flow field of the side jet of the aircraft model in a wind tunnel environment and the infrared radiation characteristics of each radiation source in the 3-5μm band are numerically simulated.The research results show that with the increase of the Mach number Ma_(in)at the inlet of the test section,the radiation intensity of the inner wall of the wind tunnel and the wall of the aircraft model increases,and the integrated radiation intensity of the side jet first decreases and then increases.By analyzing the radiation characteristics of each radiation source,the variation law of the integrated radiation intensity of each radiation source with Ma_(in)is mastered,and finally the correction method of the infrared radiation characteristics of the side jet of the aircraft model in a wind tunnel environment suitable for the model of this paper and the boundary conditions is obtained.

关 键 词：风洞环境 侧喷喷流 红外辐射 数值模拟 

分 类 号：V218[航空宇航科学与技术—航空宇航推进理论与工程]