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为了研究压气机叶片加工过程中常见的扭转度超差现象对压气机性能和流场的影响,本文采用数值模拟手段,结合理论分析方法,对单级轴流压气机动、静叶各3个典型制造截面(20%、50%和70%相对叶高)处的扭转度超差进行了详细的研究和分析。结果表明,动叶70%叶高截面的扭转度超差对压气机等熵效率和总压比的影响最为显著。进一步的敏感性分析指出,扭转度的变化与压气机的总性能参数呈负线性的变化趋势。
In order to study the influence of the overturning phenomenon on compressor performance and flow field, which is common in the process of compressor blade machining, numerical simulation methods and theoretical analysis methods are used to analyze the three typical Tolerances of twist at manufacturing cross sections (20%, 50%, and 70% relative leaf height) were studied and analyzed in detail. The results show that the ultra-poor torsion of 70% blade has the most significant effect on the isentropic efficiency and total pressure ratio of the compressor. Further sensitivity analysis points out that the change of torsion has a negative linear trend with the total performance parameters of the compressor.