北京航空航天大学学报 ›› 2004, Vol. 30 ›› Issue (06): 551-556.

• 论文 • 上一篇    下一篇

透平静叶型叶片反弯曲作用的实验研究

陈海生1, 谭春青2, 康顺2, 梁锡智2   

  1. 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
  • 收稿日期:2003-01-20 出版日期:2004-06-30 发布日期:2010-09-21
  • 作者简介:陈海生(1977-),男,山东滕州人,博士生, chen hs@buaa.edu.cn.

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

Chen Haisheng1, Tan Chunqing2, Kang Shun2, Liang Xizhi2   

  1. 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
  • Received:2003-01-20 Online:2004-06-30 Published:2010-09-21

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.

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.

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