基于高频感应风洞的壁面催化效应试验及数值研究  

Experimental and numerical study on wall catalytic effects based on inductively coupled plasma wind tunnel

作　　者：周凯 李小鹏 涂建强[1] 朱兴营[1] 高贺[1] ZHOU Kai;LI Xiaopeng;TU Jianqiang;ZHU Xingying;GAO He(Institute of Aerodynamics,China Academy of Aerospace Aerodynamics,Beijing 100074,China)

机构地区：[1]中国航天空气动力技术研究院空气动力研究所,北京100074

出　　处：《推进技术》2025年第4期288-296,共9页Journal of Propulsion Technology

摘　　要：针对高超声速飞行器壁面催化效应对气动加热的显著影响及不同材料的表面催化特性,通过高频感应风洞驻点气动热测量试验,结合数值模拟辅助诊断手段,开展地面风洞高焓非平衡来流条件下壁面催化效应规律及多种材料催化特性测试研究。数值结果表明,壁面催化效应随来流总温提高而增强,随来流总压提高而减弱,随喷管马赫数增加而增强。同时,通过多种金属、非金属材料镀膜方式来实现测试模型表面不同的催化特性,在相同的高焓非平衡来流条件下测量模型驻点热流,实验结果表明,金属膜热流明显高于非金属膜,Ag膜相对SiO_(2)膜热流最大高出101%。此外,Au膜表现出催化性随来流总焓提高而增大的趋势,分析是其对N原子的催化能力强于O原子所致。Regarding the significant influence of wall catalytic effect on aerodynamic heating of hypersonic vehicles and the surface catalytic properties of different materials,researches on the law of wall catalytic effect and the catalytic characteristics test of various materials under high enthalpy non-equilibrium incoming flow con-ditions in ground wind tunnel were carried out through inductively coupled plasma wind tunnel stagnation point aerodynamic heat measurement experiments,combined with the numerical simulation aided diagnostic method.The numerical results indicate that the wall catalytic effect increases with the increase of the total temperature of the inflow,weakens with the increase of the total pressure of the inflow,and enhances with the increase of Mach number of the nozzle.Meanwhile,coating of various metal and non-metal materials were used to represent differ-ent catalytic properties on the surface of the test models.The stagnation point heat flux of the models was mea-sured under the same high enthalpy non-equilibrium inflow.The experimental results showed that the heat flux of the metal coating was significantly higher than that of the non-metal coating,with the heat flux of Ag coating is up to 101%higher than that of the SiO_(2) coating.Moreover,the catalytic properties of the Au coating showed an in-creasing trend with the increase of the inflow total enthalpy.Analysis suggests that this is due to its stronger cata-lytic ability towards N atoms than O atoms.

关 键 词：高超声速 非平衡流动 气动加热 高频感应风洞 壁面催化效应 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]