A Methodology for Assessing Axial Compressor Stability with Inlet Temperature Ramp Distortion

  • SUN Dakun ,
  • GU Benhao ,
  • NING Fangfei ,
  • FANG Yibo ,
  • DONG Xu ,
  • XU Dengke ,
  • SUN Xiaofeng
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  • 1. School of Energy and Power Engineering, Beihang University, Beijing 102206, China
    2. Research Institute of Aero-engine, Beihang University, Beijing 102206, China

网络出版日期: 2024-04-30

基金资助

The research presented here is supported by National Natural Science Foundation of China (NSFC Grant Nos. 52306036,52325602), Science Center for Gas Turbine Project (P2022-A-II-002-001, P2022-C-II-003-001), Project funded by China Postdoctoral Science Foundation (2022M720346) and National Science and Technology Major Project (Y2022-II-0003-0006, Y2022-II-0002-0005). Also, the research is supported by the Key Laboratory of Pre-Research Management Centre (No. 6142702200101) and the Fundamental Research Funds for the Central Universities (YWF-23-Q-1009, YWF-23-Q-1065).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024

A Methodology for Assessing Axial Compressor Stability with Inlet Temperature Ramp Distortion

  • SUN Dakun ,
  • GU Benhao ,
  • NING Fangfei ,
  • FANG Yibo ,
  • DONG Xu ,
  • XU Dengke ,
  • SUN Xiaofeng
Expand
  • 1. School of Energy and Power Engineering, Beihang University, Beijing 102206, China
    2. Research Institute of Aero-engine, Beihang University, Beijing 102206, China

Online published: 2024-04-30

Supported by

The research presented here is supported by National Natural Science Foundation of China (NSFC Grant Nos. 52306036,52325602), Science Center for Gas Turbine Project (P2022-A-II-002-001, P2022-C-II-003-001), Project funded by China Postdoctoral Science Foundation (2022M720346) and National Science and Technology Major Project (Y2022-II-0003-0006, Y2022-II-0002-0005). Also, the research is supported by the Key Laboratory of Pre-Research Management Centre (No. 6142702200101) and the Fundamental Research Funds for the Central Universities (YWF-23-Q-1009, YWF-23-Q-1065).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024

摘要

基于针对周期流动的小扰动稳定性模型,本文研究了进口热冲击畸变对轴流压气机的影响,并对此状态下压气机的稳定性进行了评估。首先,本文参考谐波平衡法的控制方程,提出了适用于内部包含周期流动的压气机的小扰动稳定性模型,并在均匀进口的单级低速压气机TA36上进行了验证。然后,本文基于谐波平衡法模拟了TA36在不同进口热冲击畸变和恒定出口背压下的非定常流动。基于这些模拟结果,本文使用所提出的小扰动模型分析了压气机的稳定性。此外,本文还采用动态模态分解法精确提取了热冲击畸变带来的压力振荡。本文讨论了热冲击畸变中温升率和斯特劳哈尔数这两个参数的影响。研究结果表明,温升率增加会导致叶栅特性中迟滞环现象的出现及迟滞环的扩大,并降低压气机稳定性。根据温升率不同,可将压气机分为稳定状态和极限状态两个阶段。此外,模型预测结果表明,进口热冲击畸变的斯特劳哈尔数增加会提高压气机的稳定性。动态模态分解法的相关结果则证明,对于热冲击畸变下的压气机,其压力震荡的高阶模态和转子叶尖的振幅增加是稳定性下降的标志。

本文引用格式

SUN Dakun , GU Benhao , NING Fangfei , FANG Yibo , DONG Xu , XU Dengke , SUN Xiaofeng . A Methodology for Assessing Axial Compressor Stability with Inlet Temperature Ramp Distortion[J]. 热科学学报, 2024 , 33(3) : 856 -871 . DOI: 10.1007/s11630-024-1961-9

Abstract

Based on a small perturbation stability model for periodic flow, the effects of inlet total temperature ramp distortion on the axial compressor are investigated and the compressor stability is quantitatively evaluated. In the beginning, a small perturbation stability model for the periodic flow in compressors is proposed, referring to the governing equations of the Harmonic Balance Method. This stability model is validated on a single-stage low-speed compressor TA36 with uniform inlet flow. Then, the unsteady flow of TA36 with different inlet total temperature ramps and constant back pressure is simulated based on the Harmonic Balance Method. Based on these simulations, the compressor stability is analyzed using the proposed small perturbation model.Further, the Dynamic Mode Decomposition method is employed to accurately extract pressure oscillations. The two parameters of the temperature ramp, ramp rate and Strouhal number, are discussed in this paper. The results indicate the occurrence and extension of hysteresis loops in the rows, and a decrease in compressor stability with increasing ramp rate. Compressor performance is divided into two phases, stable and limit, based on the ramp rate. Furthermore, the model predictions suggest that a decrease in period length and an increase in Strouhal number lead to improved compressor stability. The DMD results imply that for compressors with inlet temperature ramp distortion, the increase of high-order modes and oscillations at the rotor tip is always the signal of decreasing stability.

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