宽带k分布模型用于亚声速飞行器尾焰探测  

Detection of subsonic aircraft plume using wide band k-distribution model

作　　者：尹雪梅[1] 吴学红[1] 龚毅[1] 吕彦力[1] 

机构地区：[1]郑州轻工业学院机电工程学院,河南郑州450002

出　　处：《热科学与技术》2013年第2期153-156,共4页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(21006099);郑州市科技创新团队资助项目(10CXTD151)

摘　　要：气体辐射特性计算在大气遥感和温室气体气候效应等研究中占有重要地位。利用工程经验公式计算尾喷焰流场的温度、浓度和压力分布,采用一种对应于12点Gauss-Lobatto积分点的k分布吸收系数可由简单的拟合多项式计算得到且混合物辐射特性处理简单的宽带k分布模型计算气体辐射特性,对亚声速飞行器尾喷焰在一些探测器工作谱带区间的远程探测辐射信号进行了模拟计算,并与逐线计算作了比较。结果表明:宽带k分布模型的计算结果和逐线计算相比误差较小,可用该模型对亚声速飞行器尾喷焰的远程探测进行计算。The calculation of gas radiation characteristics plays an important role in the study of atmospheric remote sensing and climatic effects of green-house gas.The temperature,gas molar concentration and pressure fields of subsonic aircraft plume were solved using engineering empirical formulations,and the plume remote sensing radiation signals in some detectors′working spectrum were calculated using wide band k-distribution model,with the absorption coefficient variables corresponding to 12-point Gauss-Lobatto quadrature points derived by a simple formulation The results were compared with the line-by-line calculations and the result shows that the relative errors are small and the wide band k-distribution model can be used for the calculation of the remote sensing of subsonic aircraft plume.

关 键 词：宽带K分布模型 远程探测 亚声速飞行器 

分 类 号：TK124[动力工程及工程热物理—工程热物理]