Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy ( IF 1.7 ) Pub Date : 2021-08-01 , DOI: 10.1177/09576509211036807 Song Yan 1 , Wuli Chu 1 , Yu Li 1 , YuChen Dai 1
The change of the blade tip clearance size has an important impact on the performance of the compressor. Considering that the performance curve of the compressor is often limited by surge and stall boundaries, this paper used the numerical simulation method to investigate the influence mechanism of the blade tip clearance size change on the stall margin of transonic axial flow compressor rotor. By mathematically decomposing the calculation formula of the stall margin of rotor, the approximate calculation formula of the change of rotor’s stall margin was obtained. Then, the detailed quantitative analysis of the factors that affect the rotor’s stall margin was carried out, the influence weights of various factors on the rotor’s stall margin was also obtained. Finally, the physical mechanism of the change of the rotor’s performance parameters was obtained by the analysis of rotor tip flow field after the blade tip clearance size change.
中文翻译:
叶尖间隙变化对跨音速轴流式压气机转子失速裕度影响的数值研究
叶尖间隙尺寸的变化对压气机的性能有重要影响。考虑到压气机的性能曲线往往受到喘振和失速边界的限制,本文采用数值模拟方法研究了叶尖间隙尺寸变化对跨音速轴流压气机转子失速裕度的影响机制。通过对转子失速裕度计算公式进行数学分解,得到转子失速裕度变化的近似计算公式。然后,对影响转子失速裕度的因素进行了详细的定量分析,得到了各种因素对转子失速裕度的影响权重。最后,