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压气机叶片在加工过程中会造成加工成型的叶片与设计者的初衷有一定的偏差。为了获知偏差对叶片气动性能的影响,结合我国现有的叶片检测方法,采用单因素法数值研究了叶片扭转、轮廓度、前后缘半径、前后缘形状及弦长误差对叶片气动性能的影响规律。研究结果表明,不同位置、不同大小的误差对性能影响不一,其中叶型扭转、轮廓度及前缘(半径、形状)误差是影响性能的主要参数,而尾缘(半径、形状)误差对性能影响不明显。其中0.5°的扭转误差会恶化性能高达46.56%,0.1mm的轮廓误差最高恶化性能达20.40%。所获得的误差影响规律可以用于提供合理的加工技术要求及制定叶片质量评判标准。
Compressor blades in the process of processing will result in processing of the blade and the original intention of designers have a certain deviation. In order to know the influence of the deviation on the aerodynamic performance of the blade, the influence of the blade torsion, the profile, the radius of the anteroposterior edge, the shape of the anteroposterior edge and the chord length on the aerodynamic performance of the blade were studied by the single factor method in combination with the existing leaf detection method in our country. . The results show that the errors of different positions and different sizes have different effects on performance, of which the leaf twist, the profile and the leading edge (radius, shape) error are the main parameters that affect the performance, while the error of the trailing edge (radius, shape) Performance is not obvious. Among them, the twist error of 0.5 ° will deteriorate the performance by as much as 46.56%, and the maximum deterioration performance of the 0.1mm profile error by 20.40%. The obtained error influence law can be used to provide reasonable processing technology requirements and the development of blade quality evaluation criteria.