瞬态法测量高转速旋转盘表面传热系数

孙纪宁; 罗翔; 刘金楠; 徐国强; 周志翔; 邱长波

瞬态法测量高转速旋转盘表面传热系数

1.
北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室, 北京 100191
2.
中国航空工业集团公司中国航空动力机械研究所, 湖南株洲412002

基金项目: 国家自然科学基金(50806004)

计量
- 文章访问数: 1537
- HTML浏览量: 1
- PDF量: 627
- 被引次数: 0
出版历程
- 收稿日期: 2011-09-27
- 刊出日期: 2012-05-28

Transient measurement for measuring the heat transfer in a rotating cavity with a high rotational speed

1.
National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2.
China Aviation Powerplant Research Institute, Aviation Industry Corporation of China, Zhuzhou Hunan 412002, China

摘要

摘要: 将实际发动机涡轮盘冷却系统简化为中心进气旋转盘,用瞬态实验的方法对该结构的换热特性进行了研究.以高转速旋转换热实验台为基础,建立了转静系盘腔中瞬态换热的实验流程和数据处理方法,得到了转盘表面的努塞尔数,并研究了流量系数、旋转雷诺数和出气间隙比对努塞尔数的影响.研究结果表明:对于中心进气冷却结构,在转盘低半径处,转盘表面的表面传热主要由冷气冲击控制,随着半径的的增大冲击对换热的影响减弱.转盘表面的努塞尔数随冷气流量系数的增大而增大,随旋转雷诺数的增大而增大,随出气间隙比的增大而减小.
- 传热 /
- 旋转盘 /
- 高转速 /
- 表面传热 /
- 瞬态法
Abstract: A real turbine disk cooling configuration was simplified to be a shrouded rotating disk system with central coolant air.Heat transfer characteristic was studied by experimental method.On the heat transfer test rig with high rotating-speed for rotating components,the procedure of experiment and the method of data processing were established initially.The Nusselt number of the rotating disk surface was got,and the variations with the mass flow coefficient,the rotating Reynolds number and the ration of sealing clearance were studied.Conclusions could be drawn as follows:For central inlet,the heat transfer in the lower radius is mainly controlled by the impingement of cooling air,the influence of impingement decreases with the increasing of radius.The Nusselt number increases with the mass flow coefficient and the rotating Reynolds number,decreases with the ratio of sealing clearance.
- heat transfer /
- rotating disk /
- high rotating speed /
- convective heat transfer /
- transient heat transfer measurement

HTML

参考文献(14)

[1]	曹玉璋.航空发动机传热学[M].北京:北京航空航天大学出版社,2005.
[2]	徐国强,曹玉璋,邱绪光.中心进气的旋转盘平均换热特性研究[J].航空动力学报,1994,9(1):27-30. XU Guoqiang,CAO Yuzhang,QIU Xuguang.Heat transfer from shrouded rotation disk with centric air inflow[J].Journal of Aerospace Power,1994,9(1):27-30.(in Chinese)
[3]	徐国强,丁水汀,邱绪光,等.具有中心进气外缘加热旋转盘的局部换热特性研究[J].航空动力学报,1995,10(3):229-232. XU Guoqiang,DING Shuiting,QIU Xuguang,et al.An investigation on local heat transfer performance for rim heated rotating disk with central air inflow[J].Journal of Aerospace Power,1995,10(3):229-232.(in Chinese)
[4]	罗翔,王建宁,徐国强.流量变化对中心进气旋转盘平均换热的影响[J].航空动力学报.2000,15(3):278-281. LUO Xiang,WANG Jianning,XU Guoqiang.Transient heat transfer characteristics of shrouded rotating disk with unsteady centric air inflow[J].Journal of Aerospace Power,2000,15(3):278-281.(in Chinese)
[5]	罗翔,王建宁,徐国强.转速非稳态变化对中心进气旋转盘平均换热的影响[J].航空动力学报 2000,15(3):282-285,290. LUO Xiang,WANG Jianning,XU Guoqiang.Transient heat transfer characteristics of shrouded rotating disk with variation of rotating speed[J].Journal of Aerospace Power,2000,15(3):282-285,290.(in Chinese)
[6]	王锁芳,朱强华,栾海峰,等.高位预旋进气转静盘腔换热实验[J].航空动力学报,2007,22(8):1216-1221. WANG Suofang,ZHU Qianghua,LUAN Haifeng,et al.Experimental study on heat transfer in rotor-stator cavity with high-positioned pre-swirl inflow[J].Journal of Aerospace Power,2007,22(8):1216-1221.(in Chinese)
[7]	王锁芳,朱强华,张羽,等.预旋进气位置对转静盘腔换热影响的数值研究[J].航空动力学报,2007,22(8):1227-1232. WANG Suofang,ZHU Qianghua,ZHANG Yu,et al.Numerical studies of heat transfer in a rotor-stator cavity with different radial positions of pre-swirl inlet[J].Journal of Aerospace Power,2007,22(8):1227-1232.(in Chinese)
[8]	Saniei N,Yuan Z X,Johnson T.Heat transfer from a stationary disk situated near a secondary rotating disk.Missouri:8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2002-3011.
[9]	Ko S H,Rhode D L.Thermal details in a rotor-stator cavity at engine conditions with a mainstream[J].Journal of Turbomachinery,1992,114(2):446-453.
[10]	Long C A.Disk heat transfer in a rotating cavity with an axial throughflow of cooling air[J].Int.J.Heat Fluid Flow,1994,15(4):307-316.
[11]	Wilson M,Pilbrow R,Owen J M.Flow and heat transfer in a preswirl rotor-stator system[J].J.of Turbomachinery,1997,119(2):364-373.
[12]	Lock G D,YAN Youyou,Newton P J.Heat transfer measurements using liquid crystals in a preswirl rotating-disk system[J].Journal of Engineering for Gas Turbines and Power,2005,127(2):375-382.
[13]	Lock G D,Wilson M,Owen J M.Influence of fluid dynamics on heat transfer in a preswirl rotating-disk system[J].Journal of Engineering for Gas Turbines and Power,2005,127(4):791-797.
[14]	凌善康,李湜然.温度测量基础[M].北京:中国标准出版社,1998.