遮挡板结构对二元喷管红外辐射特性的影响

范仁钰; 张靖周; 单勇

遮挡板结构对二元喷管红外辐射特性的影响

南京航空航天大学能源与动力学院,南京 210016

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出版历程
- 收稿日期: 2009-12-23
- 修回日期: 2010-05-31
- 刊出日期: 2011-02-28

Effects of sheltering baffles on the infrared radiation characteristics of two-dimensional nozzles

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

摘要

摘要: 在宽高比3.33的圆转矩形二元喷管的出口处安装下遮挡板,通过基于计算流体动力学/红外辐射(CFD/IR)数值模拟的方法来研究遮挡板结构对喷管壁面和尾焰的红外辐射强度的抑制效果.研究表明带狭缝气膜冷却的双层遮挡板对排气系统的红外辐射具有更为显著的抑制效果.
- 排气系统 /
- 二元喷管 /
- 红外辐射 /
- 遮挡板 /
- 计算流体动力学
Abstract: The non-axis-symmetric circular-to-rectangular nozzle is capable of suppressing the infrared radiation signature with less performance loss compared to axis-symmetric nozzle.This paper researched the effects of different sheltering baffle structures on the infrared radiation suppression of the two-dimensional nozzle with aspect ratio 3.33 by computational fluid dynamics/infrared radiation (CFD/IR) numerical simulation.The investigation shows that the double-sheltering baffles with film slots on the upper sheltering baffle have more obvious infrared radiation suppression effect.
- exhaust system /
- two-dimensional (2-D) nozzle /
- infrared radiation /
- sheltering baffles /
- computational fluid dynamics (CFD)

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参考文献(12)

[1]	Chu C W,Wun W A.Simple 2D nozzle plume for IR analysis .AIAA Paper 80-1808,1980.
[2]	郑礼宝,张靖周.矢量二元收扩喷管热射流复杂流场特征研究[J].流体力学实验与测量,2000,14(2):26-30. ZHENG Libao,ZHANG Jingzhou.Investigation of hot-jet characteristics of 2-D C-D vectoring nozzles[J].Experiments and Measurements in Fluid Mechanics,2000,14(2):26-30.(in Chinese)
[3]	郑礼宝.全尺寸二元喷管红外辐射特性研究[J].航空学报,2002,23(2):140-142. ZHENG Libao.Infrared emission from turbojet with two-dimensional nozzle[J].Acta Aeronoutica et Astronautica Sinica,2002,23(2):140-142.(in Chinese)
[4]	张勃,吉洪湖.大宽高比矩形喷管的射流与外流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 investigation of hot jet mixing with outflow characteristics of high aspect ratio C-D nozzles[J].Journal of Aerospace Power,2005,20(1):104-110.(in Chinese)
[5]	罗明东,吉洪湖,黄伟,等.涡扇发动机二元喷管的红外光谱辐射特性实验[J].推进技术,2007,28(4):394-398. LUO Mingdong,JI Honghu,HUANG Wei,et al.Experiment on spectral infrared radiant characteristics of two-dimensional nozzles[J].Journal of Propulsion Technology,2007,28(4):394-398.(in Chinese)
[6]	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[J].航空动力学报,2006,21(4):122-128. LUO Mingdong,JI Honghu,HUANG Wei,et al.Experiment on spectral infrared radiant characteristics of two-dimensional nozzles of turbofan engines[J].Journal of Propulsion Technology,2006,21(4):122-128.(in Chinese)
[7]	王宏亮,张靖周,单勇.球型收敛调节片喷管红外特性数值研究[J].航空学报,2009,30(9):1576-1582. WANG Hongliang,ZHANG Jingzhou,SHAN Yong.Numerical study on infrared radiation characteristics of spherical convergent flap nozzles[J].Acta Aeronoutica et Astronautica Sinica,2009,30(9):1576-1582.(in Chinese)
[8]	ZHANG Kunyuan,ZHANG Rongxue,XU Hui. Investigation of single expansion ramp nozzle[J].Journal of Propulsion Technology,2001,22(5):380-382.
[9]	罗昕,张靖周,单勇,等.加遮挡板后二元喷管的红外辐射特性数值模拟[J].推进技术,2008,29(6):696-700. LUO Xin,ZHANG Jingzhou,SHAN Yong.Numerical simulation on the infrared radiation characteristics of two-dimensional nozzles with sheltering baffles[J].Journal of Propulsion Technology,2008,29(6):696-700.(in Chinese)
[10]	Pao S P,Carlson J R.Computational investigation of circular-to-rectangular transition ducts[J].Journal of Propulsion and Power,1994,10(1):95-100.
[11]	单勇,张靖周,李立国.直升机红外抑制器红外辐射特性的数值研究和实验验证[J].红外与毫米波学报,2006,25(2):96-100. SHAN Yong,ZHANG Jingzhou,LI Liguo.Numerical calculation and experimental verification for the infrared radiation characteristics of helicopter infrared radiation suppressor[J].Journal of Infrared and Millimeter Waves,2006,25(2):96-100.(in Chinese)
[12]	SHAN Yong,ZHANG Jingzhou.Numerical investigation of flow mixture enhancement and infrared radiation shield by lobed forced mixer[J].Applied Thermal Engineering,2009,29(18):3687-3695.