【摘要】 为了研究无量纲叶尖间隙定义方式对压气机性能影响评估结果的差异，以涵盖四种负荷系数、五种展弦比和五种不同大小间隙的单级亚音压气机数值数据库为研究基础，详细分析了不同无量纲叶尖间隙定义方式对转子尖部性能影响的差异，明确了对不同性能参数评估时更加合理的间隙无量纲定义方式。最后，采用非线性回归方法归纳了压气机性能影响的敏感性经验公式。结果表明：在分析压气机效率参数时应以转子叶高对间隙尺寸做无量纲，而在分析压升参数时应以转子弦长做无量纲。从各个设计参数的敏感性相对大小关系来看，间隙对性能敏感性的影响最大，其次是负荷系数，而展弦比对性能敏感性的影响最小。更多还原

【Abstract】 To investigate the impact of different definitions of dimensionless tip clearance on the performance evaluation of compressors, a numerical database of a single-stage subsonic compressor with four load coefficients, five aspect ratios, and five different tip clearances was utilized as the research foundation. A detailed analysis was conducted on the differences in the impact of different nondimensional tip clearance definitions on rotor tip performance, and a more reasonable nondimensional clearance definition method was identified for evaluating different performance parameters.Finally, the sensitivity empirical formula for the impact of compressor performance was summarized using nonlinear regression method. The results show that when analyzing the efficiency parameters of the compressor, the rotor blade height should be used as a nondimensional factor for the gap size, while when analyzing the pressure rise parameters, the rotor chord length should be used as a nondimensional factor. In terms of the sensitivity of various design parameters, the tip clearance has the greatest impact on performance sensitivity, followed by the load coefficient. The aspect ratio has the smallest impact on performance sensitivity.更多还原