脉冲射流强化混合对喷流红外辐射特性的影响

朱希娟; 额日其太; 李家军; 王强

脉冲射流强化混合对喷流红外辐射特性的影响

北京航空航天大学能源与动力工程学院, 北京 100191

详细信息

作者简介:
朱希娟(1981-),女,山东聊城人,博士生,zxj811129@163.com.

中图分类号: V 231.1
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- 被引次数: 0
出版历程
- 收稿日期: 2010-02-01
- 网络出版日期: 2011-05-30

Effect of jet mixing enhancement by pulsed blowing on infrared radiation of plume

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 计算了脉冲射流强化混合喷流在3~5 μm波段的红外辐射特性,并与无脉冲激励喷流的红外辐射特性进行了比较,分析了脉冲射流强化混合对喷流红外隐身的效果.流场及温度场采用有限体积法和重整化群(RNG,Renormalization Group)k-ε湍流模型求解N-S方程得到.喷流的红外辐射强度采用有限体积法结合窄带模型求解吸收发射性介质辐射传输方程得到.计算结果显示,在亚音速条件下,少量的射流流量(占3%的主流流量)就可以使核心区长度缩减一半以上,在天顶角90°方向探测喷流的红外辐射强度,各个方位角上都有较大衰减,与激励源垂直的平面上的衰减效果相比,与之平行的平面上的更为强烈.
- 脉冲射流 /
- 强化混合 /
- 红外辐射 /
- 窄带模型 /
- 有限体积法
Abstract: A three-dimensional infrared (IR) radiation code of the plume was developed by the finite volume method (FVM) coupled with narrow band model in non-gray absorbing-emitting media. The infrared radiation of the unforced plume and the forced plume, which is mixed by injecting high amplitude and low mass flux plused slot jets into subsonic shear layer were simulated by the code. The 3-D flow field of the jet was simulated numerically by FVM, renormalization group(RNG) k-ε turbulence model. The results indicate that small injection flow rates (about 3%) can make sharp increases in both velocity and temperature decay rates at middle Mach number. At the zenithal angle of 90°, the IR radiation of the plume at each azimuth angle has tremendous reduction, and the decreases in the plane parallel with the actuators are larger than those in the plane perpendicular to the actuators.
- pulsed blowing /
- mixing enhancement /
- infrared radiation /
- narrow band mode /
- finite volume method

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参考文献(1)

[1] Parekh D E,Kibens V,Glezer A,et al.Innovative jet flow control:mixing enhancement experiments .AIAA 96-0308,1996 [2] Freund J B,Moin P.Jet mixing enhancement by high-amplitude fluidic actuation[J].AIAA Journal,2000,38(10):1863-1870 [3] 李家军,额日其太,王强.脉冲射流强化喷流混合的数值模拟[J].北京航空航天大学学报,2009,35(12):1491-1494 Li Jiajun,Eriqitai,Wang Qiang.Jet mixing enhancement by pulsed blowing[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(12):1491-1494(in Chinese) [4] Chui E H,Raithby G D,Hughes P M J.Prediction of radiative transfer in cylindrical enclosures with the finite volume method[J].J Thermophys Heat Transfer,1992,6:605-611 [5] Chai J C,Lee H S,Patankar S V.Finite volume method for radiative heat transfer[J].J of Thermophysics and Heat Transfer,1994,8(3):419-425 [6] Chui E H,Raithby G D.Computation of radiant heat transfer on a nonorthogonal mesh using the finite volume method[J].Numerical Heat Transfer:Part B,1993,23:269-288 [7] 董士奎,余其铮,谈和平,等．燃烧产物二氧化碳高温辐射的窄谱带模型参数[J]．航空动力学报,2001,16(4):355-359 Dong Shikui,Yu Qizheng,Tan Heping,et al.Narrow band model parameters of high temperature radiation for Carbon dioxide of combustion products[J].Journal of Aerospace Power,2001,16(4):355-359(in Chinese) [8] 董士奎,谈和平,余其铮,等．300~3 000 K水蒸气红外辐射谱带模型参数[J]．热能动力工程,2001,16(91):33-38 Dong Shikui,Tan Heping,Yu Qizheng,et al.Infrared radiative spectral band-model parameters for water vapor in the 300~3 000 K temperature range[J].Journal of Engineering for Thermal Energy and Power,2001,16(91):33-38(in Chinese) [9] Young S J.Nonisothermal band model theory [J].J of Quantitative Spectroscopy and Radiative Transfer,1976,18:1-28 [10] Ferziger J H,Peric M.Computational methods for fluid dynamics[M].Berlin:Springer,1996

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