| 小偏距S弯二元喷管的红外辐射特性数值分析 |
| |
| 引用本文： | 于明飞,吉洪湖,李宁,王浩,斯仁,刘健.小偏距S弯二元喷管的红外辐射特性数值分析[J].航空动力学报,2015,30(9):2080-2087. |
| |
| 作者姓名： | 于明飞 吉洪湖 李宁 王浩 斯仁 刘健 |
| |
| 作者单位： | 南京航空航天大学 能源与动力学院, 南京 210016;中国航空工业集团公司 贵州航空发动机研究所, 贵阳 550081,南京航空航天大学 能源与动力学院, 南京 210016,中国航空工业集团公司 贵州航空发动机研究所, 贵阳 550081,南京航空航天大学 能源与动力学院, 南京 210016,南京航空航天大学 能源与动力学院, 南京 210016,南京航空航天大学 能源与动力学院, 南京 210016 |
| |
| 摘 要： | 为了降低飞行器的红外辐射,适应发动机排气系统与飞机后机身的匹配,设计了一种非常规的S弯二元喷管,喷管出口中心线与发动机轴线不共线,有一个小偏距.在商业软件中计算该S弯二元喷管的温度场、速度场、压力场和组分浓度的分布,采用自主开发的红外软件,用反向蒙特卡罗法计算该喷管的红外辐射特性,并与基准轴对称喷管的计算结果进行对比,计算结果表明:采用小偏距S弯二元喷管后,能够对排气系统内部高温部件有一定的遮挡,对红外辐射特征有一定的抑制作用,最大能够降低33%的红外辐射.
|
| 关 键 词： | S弯二元喷管 小偏距 红外辐射 反向蒙特卡罗法 排气系统 |
| 收稿时间： | 2014/3/12 0:00:00 |
Numerical analysis on infrared radiation characteristics of two-dimensional S-nozzle with small offset |
| |
| YU Ming-fei,JI Hong-hu,LI Ning,WANG Hao,SI Ren and LIU Jian.Numerical analysis on infrared radiation characteristics of two-dimensional S-nozzle with small offset[J].Journal of Aerospace Power,2015,30(9):2080-2087. |
| |
| Authors: | YU Ming-fei JI Hong-hu LI Ning WANG Hao SI Ren and LIU Jian |
| |
| Institution: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;Guizhou Aero-engine Research Institute, Aviation Industry Corporation of China, Guiyang 550081, China,College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Guizhou Aero-engine Research Institute, Aviation Industry Corporation of China, Guiyang 550081, China,College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China and College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
| Abstract: | In order to reduce the infrared radiation of aircraft, and make the exhaust system match the aircraft afterbody, a kind of unconventional two-dimensional(2-D)S-nozzle was designed to suppress the infrared radiation characteristics. There was a small offset given that the nozzle's center line and the engine's axis were not collinear. Based on the distribution of temperature, pressure and species mass fraction of the two-dimensional S-nozzle obtained from CFD results, the infrared radiation characteristics of two-dimensional S-nozzle was calculated with reverse Monte-Carlo method, then analyzed and compared with axisymmetric nozzle. The results show that, the two-dimensional S-nozzle is capable of shielding the high temperature elements inside the exhaust system effectively, and the infrared radiation characteristics of the exhaust system can be further suppressed by 33%. |
| |
| Keywords: | 2-D S-nozzle small offset infrared radiation reverse Monte-Carlo method exhaust system |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
|
