轴流压气机低速模化设计的叶片造型

为了提高航空发动机高压压气机的气动性能,需要对高速压气机进行低速模化设计以开展试验研究.选取高压压气机后面级作为研究对象,给出了高压压气机低速模化设计的相似准则和模化设计流程,为低速模化设计提供了可以借鉴的准则.针对高速原型压气机设计工况点,制定模化设计目标,完成几何变换、通流设计、叶片造型及数值模拟.重点研究了叶片造型模化相似技术,在叶片造型设计上突破了几何相似的限制,通过三维积叠造型的设计方法保证了高低速压气机气动参数的相似性.研究为轴流压气机低速模化设计的叶片造型提供了可以借鉴的方法.

Research on blade shape of low-speed modeling design of axial compressor

In order to improve the aerodynamic performance of aero-engine high-pressure compressor, it is necessary to develop low-speed modeling design for high-speed compressor to carry out experimental research. The rear stage of high-pressure compressor was selected as the research object, and the similarity criterion and the process of low-speed modeling design for high-pressure compressor were given, which could be used for design reference. According to the design conditions of the high-speed prototype compressor, the modeling design objectives were established, and the geometric transformation, through-flow design, blade shape and numerical simulation were completed. The research focuses on the modeling similarity technology of blade shape, which breaks through the limitation of geometric similarity in blade modeling design, and ensures the similarity of aerodynamic parameters of high and low speed compressors through the design method of 3D stacking shape.