叶轮机械弯扭叶片的研究现状及发展趋势

弯扭叶片在20世纪90年代已在英、美等发达国家较普遍地得到应用，在我国也成功地应用于蒸汽轮机，在航空发动机涡轮中的应用也有了良好的开端。文章就叶片弯曲降低能量损失的机理以及静态和动态实验对采用弯曲叶片的效果做了综合评述，对压气机采用弯曲叶片的科研进展，以及遇到的难点也作了概要的介绍。根据我们的设计经验，在文章的最后总结了弯曲叶片级设计时应遵循的几条原则。

Research Status and Development of the Bowed-Twisted Blade for Turbomachines

The bowed twisted blades have been widely used in the developed countries in the 1990s, such as the USA and UK. In China,this new type blades are also successfully applied to the steam turbines, and the application of these blades to gas turbines of air engines has had a good beginning. The effectiveness of applying the bowed twisted blades to turbines demonstrated by the tunnel and static experiments is discussed, and the mechanism of reducing the radial and cross secondary flow losses by using the bowed twisted blades is analyzed in this paper. The advances in research on compressor bowed blades and key problems in this research are considered shortly. Based on design experiences, several principles for designing stages with bowed twisted blades are summarized in the end of this paper. [