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发动机高速排气系统红外辐射特性的数值计算和分析
引用本文:金捷,朱谷君,徐南荣,张小英.发动机高速排气系统红外辐射特性的数值计算和分析[J].航空动力学报,2002,17(5):582-585.
作者姓名:金捷  朱谷君  徐南荣  张小英
作者单位:1. 中国燃气涡轮研究院,四川,成都,610500
2. 北京航空航天大学,动力系,北京,100083
基金项目:航空科学基金资助(03I51037)
摘    要:本文以排气系统三维流场数值计算为基础,采用了封闭腔理论算法及波带透过率计算模型,通过求解耗散-发射性介质中的辐射传输方程的方法,对发动机高速排气系统的热空腔辐射、喷气流辐射及热空腔-喷气流组合辐射进行了数值计算,并将计算结果与发动机实测结果进行了分析比较。研究结果表明,红外辐射的计算值与实测值相比,误差不大于30%,且其空间分布基本一致。所开发的计算方法与程序可用于排气系统红外辐射特性的数值计算与分析,基本满足工程设计的需要。

关 键 词:发动机排气系统  红外辐射  数值模拟
文章编号:1000-8055(2002)05-0582-04
收稿时间:2001/11/22 0:00:00
修稿时间:2001年11月22

Numerical Simulation of Infrared Radiation Characteristics for Aeroengine High-Speed Exhaust System
JIN Jie,ZHU Gu jun,XU Nan rong and ZHANG Xiao ying.Numerical Simulation of Infrared Radiation Characteristics for Aeroengine High-Speed Exhaust System[J].Journal of Aerospace Power,2002,17(5):582-585.
Authors:JIN Jie  ZHU Gu jun  XU Nan rong and ZHANG Xiao ying
Institution:Chinese Gas Turbine Establishment,Chengdu610500,China;Beijing University of Aeronautics and Astronautics,Beijing100083,China;Beijing University of Aeronautics and Astronautics,Beijing100083,China;Beijing University of Aeronautics and Astronautics,Beijing100083,China
Abstract:The numerical simulation of infrared radiation from cavitation,plume and cavitation plume composition of aeroengine high speed exhaust system has been conducted.This is achieved through solving the radiation transfer equation (RTE) of dissipation emission medium by means of closure domain theory and Goody band model on the basis of 3 D flowfield calculation of aeroengine exhaust system.The results of computation have been compared with that of practical engine ground test.The investigation results indicated that the relative tolerance of infrared radition is less than 30% and the infrared radition distribution of computation is roughly consistent with that of engine test.The computation methods and code referred could be applied to estimating the infrared radition of practical aeroengine exhaust system.
Keywords:aeroengine exhaust system  infrared radiation  numerical simulation
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