高位预旋进气转静盘腔换热实验

王锁芳; 朱强华; 栾海峰; 张羽

高位预旋进气转静盘腔换热实验

南京航空航天大学高新技术研究院, 南京 210016

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出版历程
- 收稿日期: 2006-07-10
- 修回日期: 2007-01-30
- 刊出日期: 2007-08-28

Experimental study on heat transfer in rotor-stator cavity with high-positioned pre-swirl inflow

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 将某型发动机的涡轮盘腔结构简化成高位预旋进气的转静盘腔模型, 结合热色液晶先进测温显示技术, 通过实验的方法研究了转静盘间距、进气流量、旋转雷诺数以及旋流比等参数的变化对冷气降温效果和转盘换热效果的影响.实验结果表明:高位预旋进气对转盘外缘的冷却效果较好, 转盘上的温度分布呈现为同心圆形状;随着旋转雷诺数和转静盘间距的增大或者进气流量的减小, 冷气的总温降减小, 气流对转盘的换热效果变差.
- 航空、航天推进系统 /
- 预旋 /
- 转静盘腔 /
- 换热 /
- 实验 /
- 热色液晶
Abstract: A turbine disc-cavity cooling configuration of an aero-engine was simplified to a rotor-stator cavity model with high-positioned pre-swirl nozzle.The influences of rotor-stator gap, cooling air flux, rotational Reynolds number and swirl ratio on the drop of cooling air temperature and heat transfer on the rotor were experimentally investigated by using advanced temperature measurement technology of the thermochromic liquid crystal.The experimental results indicate that, the high-positioned pre-swirling inflow yields outstanding cooling effect on the rotor fringe, and the temperature of the rotor is distributed in the shape of concentric circle;the drop of cooling air temperature diminishes with the increase of rotational Reynolds number and rotor-stator gap, or with the decrease of cooling air flux, meanwhile, the cooling effect on the rotor becomes worse.
- aerospace propulsion system /
- pre-swirl /
- rotor-stator cavity /
- heat transfer /
- experiment /
- thermochromic liquid crystal

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参考文献(12)

[1]	侯晓春,季鹤鸣,刘庆国,等.高性能航空燃气轮机燃烧技术[M].北京:国防工业出版社,2002.
[2]	Owen J M,Rogers R H.Flow and heat transfer in rotating disc system[M].Rotating Cavities,Research Studies Press,Vo2,Taunton,UK,1999.
[3]	Karabay H,Wilson M,Owen J M.Prediciton effect of swirl on flow and heat transfer in a rotating cavity[J].International Jounal of Heat and Fluid Flow,2001,22:143-155.
[4]	Wilson M,Pilbrow R,Owen J M.Flow and heat transfer in a pre-swirl rotor-stator system[J].Journal of Turbomachinery,1997,119:364-373.
[5]	冶萍,张靖周.有预旋进气转静盘腔中的流动和换热特性数值研究[J].航空动力学报,2004,19(3):370-374.YE Ping,ZHANG Jingzhou.Numerical investigation of flow and heat transfer performances in pre-swirl rotor-stator cavity[J].Journal of Aerospace Power,2004,19 (3):370-374.
[6]	Yan Y Y,Newton P J,Wilson M,et al.Heat transfer measurements using liquid crystals in a preswirl rotat-ing-disk system[J].Journal of Gas Turbines and Power,2005,127:375-382.
[7]	Lock G D,Wilson M,Owen J M.Influence of fluid dynamics on heat transfer in a preswirl rotating-disk sys-tem[J].Journal of Gas Turbines and Power,2005,127:791-797.
[8]	丁水汀,徐国强,陶智,等.外缘预旋进气的旋转空腔主盘局部换热及流阻特性研究[J].推进技术,1998,19(6):45-49.DING Shuiting,XU Guoqiang,TAO Zhi,et al.Local heat transfer and flow characteristics of rotating cavity with tangential pre-swirling fringe guide van and radial out-let[J].Journal of Propulsion Technology,1998,19 (6):45-49.
[9]	丁水汀,陶智,徐国强,等.带进气预旋的旋转空腔平均换热特性研究[J].航空动力学报,1998,13(3):277-280.DING Shuiting,TAO Zhi,XU Gu oqiang,et al.A study on averaged heat transfer characteristics of a rotating cavity with preswirling inflow[J].Journal of Aerospace Power,1998,13(3):277-280.
[10]	张曦,周鹏,何世平,等.应用热色液晶测量射流撞击壁面温度分布[J].实验力学,1996,11(3):246-250.ZHANG Xi,ZHOU Peng,HE Shiping,et al.Measurement of wall temperature distribution with a impinging jet using thermochromic liquid crystals[J].Journal of Experimen-tal Mechanics,1996,11 (3):246-250.
[11]	Syson B J,Pilbrow P G,Owen J M.Effect of rotation on temperature response of thermochromic liquid crystal[J].International Jounal of Heat and Fluid Flow,1996,17(5):491-499.
[12]	El-oun Z B,Owen J M.Pre-swirl blade-cooling effec-tive-ness in an adiabatic rotor-stator system[R].ASME Paper No.88-GT-276,1988.