摘要
在计算尾喷焰燃气组分、辐射物性的基础上,用贴体坐标系下的离散坐标法(DOM),研究了不同工况下尾喷焰的红外光谱辐射特性随飞行高度的变化特征,分析了介质的辐射物性对尾喷焰辐射特性的影响. 研究结果表明: 尾喷焰的辐射物性对尾喷焰辐射传输计算有很大的影响;在所考虑的工况下,与喷焰轴向垂直的方向上光谱辐射最强.
The parameters of concentration and temperature distribution of particles and radiative parameters of gas phase molecular species are computed. The Discrete Ordinates Method in general body-fitted coordinates is used in investigating the relation between the radiation field of exhaust plume and flight altitude and Mach number, and the influence of media radiative properties on plume radiation is also analyzed. The results show that the media radiative properties intensively affect the exhaust plume radiation, for example, the particles scattering can smooth the radiative field in exhaust plume. Under the conditions described in the paper, the spectral radiative intensity vertical to axis is maximal.
出处
《上海理工大学学报》
CAS
北大核心
2003年第2期159-162,共4页
Journal of University of Shanghai For Science and Technology
基金
国家自然科学基金资助项目(50076010)
关键词
主动段
尾喷焰
红外辐射
离散坐标法
光谱特性
boosting stage
exhaust plume
infrared radiation
Discrete Ordinates Method
spectral properties
