高性能叶轮机全3维叶片技术趋势展望

高性能叶轮机是驱动先进航空发动机/地面燃气轮机发展的核心技术,为明晰叶轮机技术发展问题与趋势,在相关文献调研基础上,从基元叶栅、展向积叠、端区处理、精细化设计以及全局观念等方面出发,概要分析阐述了中国叶轮机全3维叶片技术继续发展的要点与突破口,指出全面综合最大折转亚声速叶栅、允许分离超声速叶栅、弱化激波叶栅、掠弯参数化积叠、叶身/端壁融合等基础研究成果并结合伴随方法进行精细化设计的负荷最大化技术,再辅以3维空间、非定常流动、细节关联等全局观念下派生的技术是全3维叶片技术的重要发展方向.未来全3维叶片将注重全3维空间流线曲率的良好控制.

Trend of Full Three-dimensional Blading Techniques for High Performance Turbomachinery

High performance turbomachinery is essential to advance the development of aeroengine and industry gas turbine. In order to clarify its problems and trends, some main aspects of full three-dimensional blading techniques were presented, including cascade elements, spanwise stacking, endwall treatment, detail design and global view point, etc. An important research direction was pointed out, which integrates the research results in subsonic cascade with high turning angle, supersonic cascade with limited separation, reduced shock cascade, spanwise stacking with sweep and bow, blended blade and endwall, and detailed design with adjoint optimization, and again combined with techniques derived from global viewpoint about unsteady three-dimensional turbomachinery flow. In order to seek good control, full three-dimensional streamline curvature would be the focus of blade design in the future.