南京航空航天大学学报2017，Vol.49Issue(3)：313-319,7.DOI:10.16356/j.1005-2615.2017.03.003
航空发动机矢量喷管作动器伺服阀非稳态热分析
Transient Heat Transfer Analysis for Servo Valve of Aero Engine Vectoring Nozzle
刘友宏 1丁玉林 1罗一夫1
作者信息
- 1. 北京航空航天大学能源与动力工程学院,北京,100191
- 折叠
摘要
Abstract
The servo valve of aero engine vectoring nozzle is analyzed by the lumped parameter method.The variation of the time dependent temperature of the servo valve under the influence of ambient temperature,the initial temperature and the Joule heat of the servo valve is studied through the establishment of the corresponding mathematical model.The results show that:the steady temperature of servo valve only increases with the increase of ambient temperature and Joule heat,and is independent of the initial temperature of servo valve.The over temperature time of servo valve is shortened with the increase of initial temperature,ambient temperature and Joule heat.When the ambient temperature is 300 ℃ and the servo valve has a Joule heat of 0.08 W,the initial temperature changes from 50 ℃ to 100 ℃,and the over temperature time is shortened by 20.6％.When the Joule heat of servo valve is 0.08 W,the initial temperature is 70 ℃ and the ambient temperature rises from 250 ℃ to 400 ℃,the o ver temperature time is shortened by 60.8％.When the ambient temperature is 300 ℃ and the initial temperature is 122.6 ℃,Joule heat of 10 W compared with that of 0.08 W,the over temperature time is shortened by 38.3％.关键词
矢量喷管/伺服阀/非稳态热分析/集总参数法Key words
vectoring nozzle/servo valve/transient heat transfer analysis/lumped parameter method分类
航空航天引用本文复制引用
刘友宏,丁玉林,罗一夫..航空发动机矢量喷管作动器伺服阀非稳态热分析[J].南京航空航天大学学报,2017,49(3):313-319,7.
