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The vibration of turbine blisk seriously affects their service life and reliability. When the vibration of blisk is analyzed, the accurate and rapid prediction of aerodynamic damping is very important. Therefore, a double-passage traveling wave method (DPTW) based on the energy method is proposed to calculate unsteady fluids, which uses shape correction method based on phase-lagged boundary conditions. Meanwhile, the variables of the fluid domain are obtained by accessing the Fourier coefficients on the periodic interface. Finally, the aerodynamic damping of the turbine blade as a whole was calculated at different inter-blade phase angles (IBPA). The comparison with the results of the full passage method shows that DPTW method has high computational efficiency, and the calculation error is not more than 5%.

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Analysis of Aerodynamic Damping Characteristics of Integral Turbine Blade Disk

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Xuewei Lu,
  • Youfu Song,
  • Yihong Chen,
  • Weiyi Xie,
  • Xiangjie Xiong,
  • Changli Liu

摘要

The vibration of turbine blisk seriously affects their service life and reliability. When the vibration of blisk is analyzed, the accurate and rapid prediction of aerodynamic damping is very important. Therefore, a double-passage traveling wave method (DPTW) based on the energy method is proposed to calculate unsteady fluids, which uses shape correction method based on phase-lagged boundary conditions. Meanwhile, the variables of the fluid domain are obtained by accessing the Fourier coefficients on the periodic interface. Finally, the aerodynamic damping of the turbine blade as a whole was calculated at different inter-blade phase angles (IBPA). The comparison with the results of the full passage method shows that DPTW method has high computational efficiency, and the calculation error is not more than 5%.