发动机燃气喷流红外辐射场的数值模拟

詹光; 李椿萱

发动机燃气喷流红外辐射场的数值模拟

詹光,
李椿萱

北京航空航天大学航空科学与工程学院, 北京 100083

基金项目: 航天科技资金资助项目

详细信息

中图分类号: V 211.3
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出版历程
- 收稿日期: 2004-03-09
- 网络出版日期: 2005-08-31

Numerical computations of infrared signatures in exhaust flow fields of jet engines

School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 在高温流动中热辐射与流场是耦合的,但在发动机燃气喷流流场的温度范围内可以在流场计算中忽略热辐射的影响,于是流场与辐射场的模型方程可解耦.为此提出了模拟飞行器绕流流场红外辐射的解耦模型以及相应的算法.该算法首先采用总变差减小TVD(Total Variation Diminishing)格式对流场进行模拟,再引入有限体积概念,应用所取得的流场参数,在同一组网格上计算流场中的红外辐射特征.以轴对称喷管内N₂,O₂,CO₂,H₂O,CO,HCl,H₂等7组分高度欠膨胀冻结流与均匀绕流干扰流场为算例进行了验证性的模拟计算,并与已有试验和计算数据进行了对比,表明该算法是可靠的,可在较大幅度地降低计算量的情况下给出满足工程需要的结果.
- 红外辐射 /
- 冻结流 /
- 数值模拟
Abstract: The thermal radiation field in a high temperature gas flow is coupled with the flow field. However, within the temperature range of the exhaust flow field for a jet engine, the thermal radiation effects can usually be ignored in the computations of the flow field, and the governing equations on the flow field and the radiation field can be decoupled. A decoupling model for computing infrared signatures of the flow fields surrounding the aircraft was proposed. A numerical procedure was constructed by first utilizing TVD(total variation diminishing) scheme to solve the interactive flow field. A finite volume formulation for the spectral intensity was imposed to estimate the total infrared signaturesusing the computed flow field data over the same set of grids. As a test case for validating the proposed numerical procedure, the infrared signatures in an interaction flow field of a uniformed external flow and a frozen exhaust flow with 7 species, N₂, O₂, CO₂, H₂O, CO, HCl, and H₂, were computed and compared favorably with the available experimental as well as numerical results.
- infrared radiation /
- frozen flow /
- numerical simulation

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参考文献(1)

[1] 吴颂平, 李椿萱. 模拟无粘超音速射流/绕流干扰的高分辨率自适应网格数值方法[J]. 计算物理, 1991, 8(3):235~242 Wu Songping, Lee Chunhian. An adaptive grid embedding technique with high resolution for numerical simulation of inviscid supersonic jet/external-flow interactions [J]. Comp phys, 1991,8(3):235~242(in Chinese) [2] Michael Wright J, Ram Rao M, Graham Candler V, et al. Modeling issues in the computation of plume radiation signature . AIAA-98-3622, 1998 [3] Ludwing C B, Malkmus W, Reardon J E, et al. Handbook of infrared radiation from combustion gases . N73-27807, 1973 [4] Lee C H, Zheng B, Wu S P. Numerical computation of hypersonic flows over complex configuration . AIAA-99-3687,1999 [5] Yaws, Carl L. Chemical properties handbook [M]. New York:McGraw-Hill, 1999 [6] 张家荣,赵庭元. 工程常用物质的热物理性质手[M]. 北京:新时代出版社,1987 Zhang Jiarong, Zhao Tingyuan. Thermal physical properties handbook of common engineering substance [M].Beijing:New Times Press, 1987(in Chinese) [7] 范作民,傅巽权. 热力过程计算与燃气表[M]. 北京:国防工业出版社, 1987 Fan Zuomin, Fu Xunquan. Thermal computation and combustion table [M]. Beijing:National Defence Industry Press, 1987(in Chinese) [8] Yee H C, Klopfer G H, Montagne J L. High-resolution shock-capturing schemes for inviscid and viscous hypersonic flows [J]. Comp Phys, 1990, 88:31~61 [9] Zheng B, Lee C H. The effects of limiters on high resolution computations of hypersonic flows over bodies with complex shapes [J]. Comm Nonlin Sci Numer Simul, 1998, 3(2):82~87 [10] Yaniv S, Cohen Y, Kanelbaum Y, et al. Comparison of calculated and measured radiation from a rocket motor plume . AIAA-2001-0358, 2001 [11] 赵承庆,姜毅. 气体射流动力学[M]. 北京:北京理工大学版社,1998 Zhao Chengqing, Jiang Yi. Jetting gas dynamics[M]. Beijing:Beijng University of Science and Engineering Press, 1998(in Chinese)

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