小流量下转静系盘腔传热特性

林立; 吴康; 谭勤学; 任静; 蒋洪德

doi:10.13224/j.cnki.jasp.2015.09.002

小流量下转静系盘腔传热特性

doi: 10.13224/j.cnki.jasp.2015.09.002

1. 福州大学石油化工学院节能技术研究中心, 福州 350116;
2. 清华大学机械工程学院燃气轮机研究所, 北京 100084

基金项目:

国家自然科学基金(51076076)

详细信息

作者简介:
林立(1985-),男,福建福州人,讲师,博士,主要从事燃气轮机高温部件冷却研究及工业节能研究.

中图分类号: V231.1
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出版历程
- 收稿日期: 2014-03-17
- 刊出日期: 2015-09-28

Heat transfer characteristics of rotor-stator cavity with small mass flow rate

1. Energy-saving Technology Research Center, School of Chemical Engineering, Fuzhou University, Fuzhou 350116, China;
2. Institute of Gas Turbine, School of Mechanical Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 采用热敏液晶(TLC)瞬态传热实验技术对小流量下的中心进气转静系盘腔传热特性进行研究,介绍了同步触发拍摄系统,考察了流量与转速变化对动盘面传热的影响.结果表明:在所研究工况范围内,流量变化对动盘面中低半径处传热影响较大,对高半径处影响较小;转速升高使动盘面传热效果整体增强;当湍流流动参数较小时,动盘面中高半径区域努塞尔数随半径增大而增大;采用湍流流动参数对动盘面平均努塞尔数进行归纳,实验结果与雷诺相似分析结果的偏差小于15%,一定程度上验证了雷诺相似对转静盘腔传热问题的适用性.
- 转静系盘腔 /
- 传热特性 /
- 瞬态传热实验 /
- 热敏液晶 /
- 雷诺相似
Abstract: Thermochromic liquid crystal (TLC) was used in the transient heat transfer experiments of rotor-stator cavity with central inlet and small mass flow rate. The effects of mass flow rate and rotation speed on rotary disk were studied. Results showed that, under the conditions concerned, changes of mass flow rate had a great impact on heat transfer in mid-radius and lower-radius region, and had a less impact on higher-radius region; increase of rotation speed intensified the heat transfer over the rotary disk; Nusselt number over the mid-radius and higher-radius region increased with radius when turbulent flow parameter was low; the experimental results were correlated by turbulent flow parameter and compared with results from Reynolds analogy, and the difference was less than 15%, verifying the applicability of Reynolds analogy on rotor-stator cavity to a certain extent.
- rotor-stator cavity /
- heat transfer characteristics /
- transient heat transfer experiment /
- thermochromic liquid crystal /
- Reynolds analogy

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参考文献(18)

[1]	Owen J M.The Reynolds analogy applied to flow between a rotating and a stationary disc[J].International Journal of Heat and Mass Transfer,1971,14(3):451-460.
[2]	Haynes C M,Owen J M.Heat transfer from a shrouded disk system with a radial outflow of coolant[J].Journal of Engineering for Power,1975,97(1):28-35.
[3]	Bunker R S,Metzger D E.Localheat transfer in turbine disk cavities:Part Ⅰ rotor and stator cooling with hub injection of coolant[J].Journal of Turbomachinery,1992,114(1):211-220.
[4]	Roy R P,Xu G,Feng J.Astudy of convective heat transfer in a model rotor-stator disk cavity[J].Journal of Turbomachinery,2001,123(3):621-632.
[5]	Pellé J,Harmand S.Heattransfer study in a rotor stator system air gap with an axial inflow[J].Applied Thermal Engineering,2009,29(8/9):1532-1543.
[6]	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.Effects of mass flow change on average heat transfer of rotating disk with central inlet[J].Journal of Aerospace Power,2000,15(3):278-281.(in Chinese)
[7]	孙纪宁,罗翔,刘金楠,等.瞬态法测量高转速旋转盘表面传热系数[J].航空动力学报,2012,27(5):969-974. SUN Jining,LUO Xiang,LIU Jinnan,et al.Transient measurement for measuring the heat transfer in a rotating cavity with a high rotational speed[J].Journal of Aerospace Power,2012,27(5):969-974.(in Chinese)
[8]	徐国强,詹治国,丁水汀,等.中心进气和高位垂直进气转静系旋转盘冷却品质比较[J].推进技术,2000,21(5):42-44. XU Guoqiang,ZHAN Zhiguo,DING Shuiting,et al.Comparison of cooling effectiveness between central and high-positioned air inlet rotor-stator disk systems[J].Journal of Propulsion Technology,2000,21(5):42-44.(in Chinese)
[9]	丁水汀,陶智,徐国强,等.旋转盘腔冷却问题的工程评价[J].航空动力学报,1999,14(1):83-86. DING Shuiting,TAO Zhi,XU Guoqiang,et al.An Engineering evaluation system of turbine disc cooling configuration[J].Journal of Aerospace Power,1999,14(1):83-86.(in Chinese)
[10]	林立,任静,蒋洪德.小流量下的转静系盘腔传热特征分析[J].工程热物理学报,2012,33(7):1122-1126. LIN Li,REN Jing,JIANG Hongde.Heat transfer characteristic of rotor-stator system with small radial outflow[J].Journal of Engineering Thermophysics,2012,33(7):1122-1126.(in Chinese)
[11]	Lin L,Ren J,Jiang H D,et al.Heat transfer characteristics of a rotor-stator system with small radial outflow[R].ASME Paper GT2012-69759,2012.
[12]	Agilent Technologies Incorporation.Agilent 34980A multifunction switch/measure unit user's guide[R].Loveland,USA:Agilent Technologies Incorporation,2005.
[13]	林立.燃气轮机转静系盘腔内流动传热机理研究[D].北京:清华大学,2013. LIN Li.Research on the mechanism of flow and heat transfer in rotor-stator cavities in gas turbine[D].Beijing:Tsinghua University,2013.(in Chinese)
[14]	Kakade V.Fluiddynamic and heat transfer measurements in gas turbine pre-swirl cooling systems[D].Bath,UK:University of Bath,2009.
[15]	Syson B J,Pilbrow R G,Owen J M.Effect of rotation on temperature response of thermochromic liquid crystal[J].International Journal of Heat and Fluid Flow,1996,17(5):491-499.
[16]	Owen J M.Transient heat transfer measurements using thermochromic liquid crystal:Part 2 experimental uncertainties[J].International Journal of Heat and Fluid Flow,2003,24:23-28.
[17]	杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,2006.
[18]	Owen J M,Rogers R H.Flow and heat transfer in rotating-disc systems:Volume 1 rotor-stator systems[M].Taunton,Research Studies Press,1989.