基于CFD网格的激波流场热辐射计算方法

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  摘要:针对高速飞行器在气动热环境下的激波热辐射问题,提出一种基于計算流体网格的激波流场热辐射计算方法。首先利用CFD模拟流场数据,结合分子光谱辐射数据库,采用窄谱带模型计算每一个网格的气体吸收系数,然后通过求解网格化的辐射传递方程得到整个激波流场的热辐射情况。根据对激波流场数据的仿真分析,得到了激波流场热辐射随飞行高度和飞行速度的变化规律。
  关键词:气动光学;红外探测;激波流场;气动热辐射
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