波纹对高亚音叶型气动敏感位置和宽度研究

Based on the analysis of the processing status of compressor blades, this paper summarizes the sensitive position and sensitive width of the local waviness deviation, and takes the high-subsonic profile of an engine rotor blade as the research object to carry out a numerical simulation study on the sensitive position and sensitive width. The results show that the range of arc length from 0% to 20% is the region where the aerodynamic performance is more sensitive to the local waviness deviation, and the local waviness deviation mainly affects the positive angle of attack characteristics of the profile. There is a critical waviness width in the aerodynamic sensitive area- 10% of the airfoil arc length. When the actual waviness width is smaller than the critical width, the compressor performance will be rapidly deteriorated; when the actual waviness width is greater than the critical width, the flow near leading edge can be improved, and loss in boundary layer is reduced. Based on the research results in this paper, it is suggested that the compressor blade acceptance stage should focus on the local waviness deviation near the leading edge whose width is less than 10% of the blade arc length.