Forced Response Calculation of Axial Compressor Rotor Blade Considering Wake Sweeping and Wake Fluctuation

  • PENG Wei ,
  • LI Xuesong ,
  • REN Xiaodong ,
  • GU Chunwei ,
  • QUE Xiaobin
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  • 1. Gas Turbine Research Institute, Tsinghua University, Beijing 100084, China
    2. China Untied Gas Turbine Technology Co., Ltd., Beijing 102209, China

Online published: 2025-07-04

Supported by

This research was supported by the National Science and Technology Major Project of China (J2019-II-0005-0025).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Abstract

Upstream blade wake turbulence fluctuation may affect compressor blade forced response caused by wake sweeping. In order to investigate the effect of wake turbulence fluctuation and predict the blade vibration more accurately, this paper proposes a forced response calculation model that considers the excitation of upstream blade wake turbulence fluctuation on the basis of the conventional forced response calculation method. Using a three-stage axial compressor as the research subject, a quasi-three-dimensional large eddy simulation is conducted using the blade profile at 77.8% of the span of the inlet guide vane. Analysis of the flow field around the inlet guide vane indicates noticeable total pressure fluctuation in the wake of the inlet guide vane. The influence of upstream wake turbulence fluctuation is incorporated into the forced response calculation model in the form of total pressure fluctuation to obtain more accurate excitation forces. Specifically, the relationship between the amplitude of total pressure fluctuation and total pressure loss is established according to the results of large eddy simulation, and different formulas are set according to the position zoning of suction surface and pressure surface. Computational results show that, if only wake sweeping is considered, the maximum amplitude is 27% lower than the test result. However, when wake sweeping and wake fluctuation are considered, the calculated result better matches the test result, with only a 6% reduction compared to the test result. The results confirm the effectiveness of the proposed model.

Cite this article

PENG Wei , LI Xuesong , REN Xiaodong , GU Chunwei , QUE Xiaobin . Forced Response Calculation of Axial Compressor Rotor Blade Considering Wake Sweeping and Wake Fluctuation[J]. Journal of Thermal Science, 2025 , 34(4) : 1241 -1256 . DOI: 10.1007/s11630-025-2124-3

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