小偏距S弯二元喷管的红外辐射特性数值分析

于明飞; 吉洪湖; 李宁; 王浩; 斯仁; 刘健

doi:10.13224/j.cnki.jasp.2015.09.005

小偏距S弯二元喷管的红外辐射特性数值分析

doi: 10.13224/j.cnki.jasp.2015.09.005

于明飞^1,2,
吉洪湖¹,
李宁²,
王浩¹,
斯仁¹,
刘健¹

1. 南京航空航天大学能源与动力学院, 南京 210016;
2. 中国航空工业集团公司贵州航空发动机研究所, 贵阳 550081

详细信息

作者简介:
于明飞(1982-),男,江西星子人,工程师,硕士生,主要从事航空发动机红外隐身技术研究.

中图分类号: V218
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出版历程
- 收稿日期: 2014-03-12
- 刊出日期: 2015-09-28

Numerical analysis on infrared radiation characteristics of two-dimensional S-nozzle with small offset

1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Guizhou Aero-engine Research Institute, Aviation Industry Corporation of China, Guiyang 550081, China

摘要

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.
- S弯二元喷管 /
- 小偏距 /
- 红外辐射 /
- 反向蒙特卡罗法 /
- 排气系统
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%.
- 2-D S-nozzle /
- small offset /
- infrared radiation /
- reverse Monte-Carlo method /
- exhaust system

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参考文献(18)

[1]	朱宝鎏,朱荣昌.作战飞机效能评估[M].2版.北京:航空工业出版社,2006.
[2]	武振波,武哲.武装直升机红外隐身系统研究[J].北京航空航天大学学报,2003,29(7):588-592. WU Zhenbo,WU Zhe.Research on infrared stealth system for armed helicopter[J].Journal of Beijing University of Aeronautics and Astronautics,2003,29(7):588-592.(in Chinese)
[3]	Stevens H I.F-15/non axisymmetric nozzle system integration study support program contractor report[R].NASA-CR-135252,1978.
[4]	张勃,吉洪湖.大宽高比矩形喷管的射流与外流的掺混特性的数值研究[J].航空动力学报,2005,20(1):104-110. ZHANG Bo,JI Honghu.Numerical study of internal and external flow mixing for rectangular nozzles with large aspect ratio[J].Journal of Aerospace Power,2005,20(1):104-110.(in Chinese)
[5]	张勃,吉洪湖,罗明东,等.宽高比对尾向可见明火矩形喷管红外抑制特性影响研究[J].航空动力学报,2007,22(11):1820-1825. ZHANG Bo,JI Honghu,LUO Mingdong.Research of influence of aspect ratio on infrared suppressing characteristics of rectangular nozzles[J].Journal of Aerospace Power,2007,22(11):1820-1825.(in Chinese)
[6]	额日其太,王志杰,吴寿生.高速热喷流条件下二元收扩喷管扩张段壁面冷却的初步试验研究[J].航空动力学报,2002,17(1):40-44. Eriqitai,WANG Zhijie,WU Shousheng.Preliminary experimental investigation on the divergent wall cooling of two dimensional C-D nozzles at high speed and hot jet conditions[J].Journal of Aerospace Power,2002,17(1):40-44.(in Chinese)
[7]	罗明东,吉洪湖,黄伟,等.无加力涡扇发动机二元喷管的红外辐射特性实验研究[J].航空动力学报,2006,21(4):631-636. LUO Mingdong,JI Honghu,HUANG Wei,et al.An experimental investigation on infrared radiation on characteristics of 2-D nozzles of turbofan engines afterburner[J].Journal of Aerospace Power,2006,21(4):631-636.(in Chinese)
[8]	胡传炘.隐身涂层技术[M].北京:化学工业出版社,2004.
[9]	斯仁,吉洪湖,黄伟.低发射率对二元引射喷管无人机红外特征及探测距离的影响[J].南京航空航天大学学报,2013,45(5):665-671. SI Ren,JI Honghu,HUANG Wei.Effect of low emissivity on infrared signature and detcetion range of UAV with 2-D ejector nozzle[J].Journal of Nanjing University of Aeroautics and Astronautics,2013,45(5):665-671.(in Chinese)
[10]	刘健,宫禹,吉洪湖,等.战斗机8~14μm波段红外特征及低发射率材料隐身效果[J].航空动力学报,2014,29(2):259-267. LIU Jian,GONG Yu,JI Honghu,et al.Fighter's infrared characteristics between 8 and 14μm and infrared stealth effect of low emissivity materials[J].Journal of Aerospace Power,2014,29(2):259-267.(in Chinese)
[11]	冯晓星,吉洪湖,斯仁.战斗机3~5μm波段红外特征空间分布及低发射率材料隐身效果分析[J].红外技术,2011,33(7):389-405. FENG Xiaoxing,JI Honghu,SI Ren.Numerical study on spatial distribution of 3~5μm infrared signature and stealth effect of low emissivity material for fighter aircraft[J]. Infrared Technology,2011,33(7):389-405.(in Chinese)
[12]	张航,谭慧俊,李湘萍.X-47狭缝式进气道的流动特征与工作性能[J].航空学报,2009,30(12):2243-2249. ZHANG Hang,TAN Huijun,LI Xiangping.Flow structure and performance characteristics of X-47-like slot-shaped inlet[J].Acta Aeronautica et Astronautica Sinica,2009,30(12):2243-2249.(in Chinese)
[13]	Brunet E,Seine N S,Daris T,et al.Exhaust essambly forming a horizontal propulsion gas elbow in an aircraft:United States,US007784284B[P].2010-08-31.
[14]	刘常春,吉洪湖.一种双S弯二元喷管的红外辐射特性数值研究[J].航空动力学报,2013,28(7):1483-1488. LIU Changchun,JI Honghu.Numerical simulation on infrared radiation characteristice of serpentine 2-D nozzle[J].Journal of Aerospace Power,2013,28(7):1483-1488.(in Chinese)
[15]	李荣松,王强,额日其太.尾缘修型的二元喷管内外流场数值研究[J].航空动力学报,2005,20(3):389-393. LI Ronsong,WANG Qiang,Eriqitai.Numerical investigation of two-dimensional nozzle with trailing edge modification[J].Journal of Aerospace Power,2005,20(3):389-393.(in Chinese)
[16]	胡娅萍,吉洪湖,白涛涛.湍流模型对发动机排气系统流场和红外辐射特征计算的影响[J].航空动力学报,2012,27(11):2414-2420. HU Yaping,JI Honghu,BAI Taotao.Effect of turbulence models on numerical simulation of flow and infrared radiation characteristics of aero-engine exhaust system[J].Journal of Aerospace Power,2012,27(11):2414-2420.(in Chinese)
[17]	陶文铨.数值传热学[M].2版.西安:西安交通大学出版社,2001.
[18]	黄伟,吉洪湖,斯仁,等.涡扇发动机排气系统红外特征[J].推进技术,2010,31(6):745-750. HUANG Wei,JI Honghu,SI Ren,et al.Infrared characteristics calculating of turbofan engine exhaust system[J].Journal of Propulsion Technology,2010,31(6):745-750.(in Chinese)