CAJ | 학술논문

高温气体流场辐射特性在高超声速飞行器目标探测、识别和气动热环境预测等方面具有重要应用。基于带辐射模型，考虑硅基防热材料热化学烧蚀产物的可见光和红外辐射机制，建立了烧蚀产物光谱参数的计算方法，发展了高温气体烧蚀流场辐射特性计算软件。高温气体烧蚀流场的数值模拟结果，利用所发展的辐射计算软件，计算分析了自由飞弹道靶实验模型及高超声速钝头体流场的辐射特性，重点研究了各种烧蚀产物的影响。研究表明：烧蚀产物对流场红外辐射特性具有重要影响。
고온기체류장복사특성재고초성속비행기목표탐측、식별화기동열배경예측등방면구유중요응용。기우대복사모형，고필규기방열재료열화학소식산물적가견광화홍외복사궤제，건립료소식산물광보삼수적계산방법，발전료고온기체소식류장복사특성계산연건。고온기체소식류장적수치모의결과，이용소발전적복사계산연건，계산분석료자유비탄도파실험모형급고초성속둔두체류장적복사특성，중점연구료각충소식산물적영향。연구표명：소식산물대류장홍외복사특성구유중요영향。
The radiation characteristics of high-temperature gas flow have important application in detection, discrimination and aerothermal environment prediction for hypersonic vehicles. Based on a band model and considering the visible and infrared radiation of the ablation products of silicon-based materials for heat-shield, the method and code were developed to compute spectral parameter of ablation products and the radiation characteristics of high temperature gas flow field. The flow field parameters resulted from the numerical simulation and used the code, the radiation characteristics of flow over a model in a free-flight ballistic range and hypersonic blunt body were computed, and particularly the ablation effects were studied. The research shows that the ablation products have important effects on infrared radiation of the flow field.