高位垂直进气旋转盘非稳态换热的实验研究

罗翔; 徐国强; 丁水汀; 陶智

高位垂直进气旋转盘非稳态换热的实验研究

北京航空航天大学能源与动力工程学院, 北京 100083

详细信息

中图分类号: V 232
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出版历程
- 收稿日期: 2003-01-24
- 网络出版日期: 2004-06-30

Experiment investigation on transient heat transfer in rotor-stator system with high-positioned air inflow

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 用实验的方法对高位垂直进气的转静系旋转盘在非稳态情况下的流动与换热特性进行了研究,主要研究了冷气流量系数和旋转雷诺数的变化对盘面温度和平均努塞尔数的影响.结果发现:冷气流量的改变对盘面的换热影响非常明显,盘面各点温度随时间的变化率是相同的;旋转雷诺数增加使盘面平均努塞尔数增大,旋转雷诺数变化的方式导致盘缘区域温度随时间的变化率与中心区域的不同.
- 传热 /
- 旋转盘 /
- 非稳态 /
- 对流换热系数
Abstract: A gas turbine disk was simplified to be a shrouded rotor-stator system with high-positioned air inflow, the rotor was heated at rim. The rotor diameter was 400 mm and its maximal rotating speed was up to 3000 r/min. Transient heat transfer characteristics of the rotor were investigated experimentally as the rotational Reynolds number and the mass flow rate were changed. The results show: the mass flow rate could always have significant effects on average Nusselt number of the rotor. The rates of temperature vs. time in everyplace are almost same. The rotational Reynolds number has a few effects on averaged Nusselt number in this experimental range. The rate of temperature vs. time at high radius is large than that at low radius under different changes of rotational Reynolds number.
- heat transfer /
- rotating disk /
- transient /
- heat transfer coefficient

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参考文献(1)

[1] Metzger D, Partipilo V. Single and multiple jet impingement heat transfer on rotating disk . AIAA 89-0174,Reno,1989 [2]Bunker R S,Metzger D E,Wittig S. Local heat transfer in turbine disk cavities :partⅡ-rotor cooling with radial location injection of coolant[J].ASME J Turbomachinery, 1992,114:221~228 [3] 徐国强,陶智,丁水汀,等. 高位垂直进气旋转盘流动与换热的实验研究[J]. 航空动力学报,2000,15(2):164~168 Xu Guoqiang, Tao Zhi, Ding Shuiting, et al. Experimental investigation on flow and heat transfer in shrouded rotating disk with high-positioned air inflow[J]. Journal of Aerospace Power, 2000, 15(2):164~168(in Chinese) [4] 徐国强,詹国治,丁水汀,等. 高位垂直进气转静系旋转盘流动与换热计算[J].推进技术,2000,21(4):40~43 Xu Guoqiang, Zhan Guozhi, Ding Shuiting, et al. Numerical calculation for flow and heat transfer of a shrouded rotating disk with high-positioned air inlet[J]. Journal of Propulsion Technology, 2000, 21(4):40~43(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):282~290 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):282~290(in Chinese) [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 . 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 inlet inflow[J]. Journal of Aerospace Power, 2000, 15(3):278~281(in Chinese)

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