涡轮叶片尾缘复合通道隔板结构对流动的影响

丁水汀; 李 果; 李 莉; 王 勇

涡轮叶片尾缘复合通道隔板结构对流动的影响

北京航空航天大学航空发动机气动热力重点实验室, 北京 100191

详细信息

作者简介:
丁水汀(1967-),男,辽宁铁岭人,教授,dst@buaa.edu.cn.

中图分类号: V 23
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出版历程
- 收稿日期: 2008-05-26
- 网络出版日期: 2009-06-30

Effect of different clapboards structure in turbine blade trailing edge complex passages on flow characteristics

National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 涡轮叶片尾缘隔板结构的优化可以强化换热,其机理是破坏附面层的形成,并形成脉动效果.本试验通过流道中打入粒子,在激光片光源的照射下使用高速摄像头拍摄涡轮叶片尾缘带隔板的复合通道内的流动形式.主要试验了2种不同结构的隔板(矩形隔板与120°波形隔板)在射流孔全部打开和单个射流孔打开时的流动形式,以及波形隔板在不同条件下对流动形式的影响.结果表明:矩形隔板和波形隔板都对射流有所影响;波形隔板射流有其特有的震荡效果,在固定几何条件下,主要与进口雷诺数相关.
- 叶片尾缘 /
- 片光源 /
- 高速摄像 /
- 隔板 /
- 震荡
Abstract: The experiment mainly conducted the effect of two different structure diaphragm plates in the complex passages on heat transfer of turbine blade trailing edge. A laser bean irradiated the passages and a low-motion vidicon screened the particle-s flow in second pass passage. Comparison the flow was made among two kinds of diaphragm plates: rectangular diaphragm plates(RDP), 120° waved diaphragm plates(WDP) in the complex passages of turbine blade trailing edge. It was found that both these two diaphragm plates influence the flow, and the WDP has a special oscillation pulsating flow effect in the second passage. For WDP, the Re has fierceness influence. The oscillation effects enhance along with the Re change.
- turbine trailing edge /
- patch lamp-house /
- low-motion vidicon /
- diaphragm plates /
- oscillation effect

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参考文献(1)

[1] 曹玉璋,陶智,徐国强,等.航空发动机传热学[M].北京:北京航空航天大学出版社,2005 Cao Yuzhang, Tao Zhi, Xu Guoqiang, et al. Theory of heat transform for aero engine[M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2005(in Chinese) [2] 丁水汀,刘丽艳,李莉,等.涡轮叶片尾缘复合通道中隔板结构对换热特性的影响[J].航空动力学报,2006, 21(3):523-527 Ding Shuiting, Liu Liyan, Li Li,et al. The effect of different clapboards structure in turbine blade trailing edge complex passages on heat transfer characteristics[J]. Journal of Aerospace Power, 2006, 21(3):523-527(in Chinese) [3] 丁水汀,李莉. 涡轮叶片尾缘复合通道隔板结构[J].北京航空航天大学学报,2006,32(3):276-279 Ding Shuiting, Li Li. Different structure diaphragm plates in complex passages of turbine blade trailing edge[J]. Journal of Beijing University of Aeronautics and Astronautics,2006, 32(3):276-279(in Chinese) [4] Rush T A, Newell T A, Jacobi A M. An experimental study of flow and heat transfer insinusoidal wavy passages[J]. International Journal of Heat and Mass Transfer, 1999(42):1541-1553 [5] 李莉,丁水汀,陶智,等.涡轮叶片尾缘复合通道的换热[J].北京航空航天大学学报,2005,31(2):202-205 Li Li, Ding Shuiting, Tao Zhi, et al. Heat transfer in complex passages of turbine blade trailing edge[J]. Journal of Beijing University of Aeronautics and Astronautics,2005, 31(2):202-205(in Chinese) [6] Wang G, Wanka S P. Convective heat transfer in periodic wavy passages [J]. Int J Heat Mass Transfer, 1995,38(17):3219-3230 [7] Khine Y Y, Banish R M. Electromagnetic damping of convective contamination in self-diffusivity experiments with periodic heating conditions[J]. Materials Science and Engineering, 2005, A 393:338-343

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