火箭发动机羽流红外特性计算方法研究

推进技术 ›› 2010, Vol. 31 ›› Issue (4): 423-427.

火箭发动机羽流红外特性计算方法研究

王伟臣,李世鹏,张峤,王宁飞,何丹薇

北京理工大学宇航学院;北京理工大学宇航学院;北京理工大学宇航学院;北京理工大学宇航学院;内蒙古工业大学机械学院

发布日期:2021-08-15
基金资助:
国防基础预研项目资助(B2220060060)

Research on the calculation method of infrared signature of rocket motor exhaust plume

School of Aerospace Engineering,Beijing Inst.of Technology,Beijing 100081,China;School of Aerospace Engineering,Beijing Inst.of Technology,Beijing 100082,China;School of Aerospace Engineering,Beijing Inst.of Technology,Beijing 100083,China;School of Aerospace Engineering,Beijing Inst.of Technology,Beijing 100084,China;School of Mechanical Engineering,Inner Mongolia Univ.of Technology,Huhehaote 010051,China

Published:2021-08-15

摘要/Abstract

摘要： 为研究火箭发动机羽流近场的红外辐射特性,建立了羽流红外辐射传输的计算模型,通过在能量方程中引入辐射源项,实现了流场计算与辐射传输的耦合求解。计算中考虑了7种主要燃气组分,分别使用有限体积法和离散坐标法求解羽流流场和辐射传输方程,得到了羽流红外辐射强度在1～15μm范围内随波长变化的曲线及辐射强度在近场内的分布云图,均与文献的计算结果和红外试验热图符合较好。在羽流近场内能够捕捉到流场内各点辐射强度随流场物性变化的情况,表明耦合求解能提高辐射计算精度。

关键词: 火箭发动机羽流;红外辐射;耦合求解;有限体积法;离散坐标法

Abstract: To study the infrared signature of rocket motor exhaust plume,the calculation model for infrared radiation transfer of rocket motor was built.The radiation source item was induced to energy equation,thus the plume flowfield and radiation transfer was calculated together.Finite volume method and discrete ordinates method were separately used to solve the plume flowfield of multi-species without chemical reactions and the radiation transfer equation.Thus infrared radiation(IR) signature of exhaust plume of rocket motor was obtained.Seven main species were included in the exhaust plume.The spectral radiation intensity from 1 μm to 15μm and radiation intensity contours were obtained,and both of them agree well with the results from open literature and IR experimental images.The results show that the IR characteristics near the plume field captured change with the physical characteristics of flowfield,which shows that the coupled solution can increase the calculation resolution.

Key words: Rocket motor exhaust plume;Infrared radiation;Coupled solution;Finite volume method;Discrete ordinates method

王伟臣,李世鹏,张峤,王宁飞,何丹薇. 火箭发动机羽流红外特性计算方法研究[J]. 推进技术, 2010, 31(4): 423-427.