NPU-LL 叶片系列构型气动性能研究

In order to improve the aerodynamic load and stability of the axial compressor, the leading and trailing edges of several blades are arranged staggered with each other in the circumferential direction at different axial positions to form a non-uniform blade row of the compressor. This paper proposes four new configurations of compressor blades, which is uniformly defined as the NPU-Liu-Liao blade series configuration(Abbreviation: LL Blade). This paper introduces the structural characteristics and parameters of NPU-LL blade series configuration, explores its flow characteristics, and preliminarily reveals the prominent advantages of NPU-LL blade series configuration in flow control. The aerodynamic characteristics of four NPU-LL blade cascade layouts are calculated and compared with the conventional cascade. The results show that the configuration of NPU-LL blade series breaks the limitation of traditional blade uniform layout, which can effectively improve the aerodynamic performance of compressor and provide a new idea for the optimization design of compressor performance.