透平静叶型叶片反弯曲作用的实验研究

陈海生; 谭春青; 康顺; 梁锡智

透平静叶型叶片反弯曲作用的实验研究

1.
北京航空航天大学宇航学院, 北京 100083
2. 中国科学院?工程热物理研究所, 北京 100080

详细信息

作者简介:
陈海生(1977-),男,山东滕州人,博士生, chen hs@buaa.edu.cn.

中图分类号: TK 474.7
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- 文章访问数: 2667
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- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2003-01-20
- 网络出版日期: 2004-06-30

Experimental investigation on effects of blade negative bowing in turbine stator cascades

1.
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Institute of Engineering Thermophysics, Chinese Academy of Scien ces, Beijing 100080, China

摘要

摘要: 在平面透平叶栅风洞中,测量了一种典型透平静叶型直叶片叶栅和叶片弯曲角分别为-10°、-20°的反弯曲叶片叶栅的出口流场和叶片表面静压.定量地分析了叶片反弯曲对叶栅出口二次流、总压损失和气流角的影响,并探讨了叶片反弯曲作用的机理.结果表明:叶片反弯曲在叶片表面特别是吸力面建立了反"C"形压力分布,它是引起叶栅性能和流场变化的主要原因,但叶片反弯曲不能改善叶栅的气动性能.
- 透平 /
- 叶栅 /
- 实验 /
- 叶片 /
- 弯曲
Abstract: The outlet flowfield and static pressure on blade surfaces of the classical turbine stator cascades with straight and -10°、-20° bowed blades were measured in the linear cascade wind tunnel. Effects of blade negative bowing on secondary flow, total pressure loss and outlet flow angle were analyzed quantitatively, mechanism of the effects was discussed as well. The results show that the negative bowing results in the "C" shape distribution of static pressure on blade surfaces, which is the main reason for the variation of characteristics of flowfield, however the aerodynamic performances of cascades can not be improved by negatively bowed blades.
- turbine /
- cascades /
- experiment /
- blades /
- bowing

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参考文献(1)

[1] 陈海生. 弯曲叶片透平叶栅和单级轴流风机气动特性的实验和数值模拟研究 . 北京:中科院工程热物理所, 2002 Chen Haisheng. Experimental and numerical investations on the aerodynamic characters in turbine cascades with bowed blades and a single-stage axial fan . Beijing:Institute of Engineering Thermophysics, Chinese Academy of Sciences, 2002(in Chinese) [2] Wang Z, Han Wanjin,Xu Wenyuan,et al. The blade curvinrg effects in a turbine stator cascades with low aspect ratio . AD 93-02713, 1993 [3] 谭春青,陈海生,康顺,等.一种典型透平静叶型叶片正弯曲作用的实验研究[J].工程热物理学报,2001,22(3):247~250 Tan Chunqing,Chen Haisheng,Kang Shun,et al.Experimental investigation of the effects of positively bowing of a typical turbine stator[J].Journal of Engineering Thermophysics,2001,22(3):247~250(in Chinese) [4] 陈海生,康顺, 谭春青,等. 叶片正弯曲对透平静叶栅叶片气动特性影响的实验研究[J].工程热物理学报, 2002, 23(2):179~182 Chen Haisheng, Kang Shun, Tan Chunqing,et al. Experimental investigation of the effects of blade positively-curving on aerodynamic characters of blades in turbine stator cascades[J]. Journal of Engineering Thermophysics, 2002,23(2):179~182(in Chinese) [5] Yamamoto A. Production and development of secondary flows and losses within two types of straight turbine cascades, part I:a stator case . ASME 86-GT-184, 1986 [6] Moore J. Secondary flows and losses downstream of a turbine cascade[J]. ASME Journal of Engineering for Gas Turbine and Power, 1985,107(4):961~968 [7] 谭春青. 透平叶栅中叶片的弯曲对流场性能影响的实验研究 . 哈尔滨:哈尔滨工业大学动力系,1993 Tan Chunqing. Experimental investigation of the effects of blade curving on the flow fields in turbine stator cascades . Harbin:Dept. of Power, Harbin Institute of Technology, 1993(in Chinese)

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