非轴对称端壁设计的高负荷涡轮气热性能研究进展

非轴对称端壁设计因能够有效地减少涡轮叶栅的二次流损失和提高气动性能而在高负荷涡轮设计中得到应用。简要回顾了涡轮叶栅二次流模型和非轴对称端壁造型方法,重点综述了非轴对称端壁设计的高负荷涡轮气动性能研究进展和抑制端壁二次流的作用机制,介绍了非轴对称端壁设计的高负荷涡轮端壁气热耦合作用的冷却特性研究进展,总结了高负荷涡轮非轴对称端壁设计技术的应用成果,展望了非轴对称端壁设计在高负荷涡轮的高效气动和冷却布局应用方面需要深入研究的内容。

Aerothermal Performance Research Progress of High Load Turbines with Non-Axisymmetric Endwall Design

Non-axisymmetric endwall is applied in the high load turbine design because of efficient reducing the secondary flow loss and improving the aerodynamic performance of turbine cascade. In this article, the secondary flow model of turbine cascade and methods of non-axisymmetric endwall contouring are briefly introduced, the aerodynamic performance research progress of high load turbine with nonaxisymmetric endwall design and the mechanism of suppressing endwall secondary flow were emphatically reviewed, research progress of the cooling characteristics under function of aerothermal coupling effect of the high load turbine endwall with non-axisymmetric endwall design was presented, application achievements of the high load turbine non-axisymmetric endwall design technique was summarized, and further research of the non-axisymmetric endwall design in the aspect of the high efficient aerodynamic and cooling layout of high load turbine were prospected.