Volume 22 Issue 8
Aug.  2007
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ZHAO Jun, LIU Yang-wei, LIU Bao-jie. Frequency-domain analysis of NASA67 unsteady flow field[J]. Journal of Aerospace Power, 2007, 22(8): 1371-1377.
Citation: ZHAO Jun, LIU Yang-wei, LIU Bao-jie. Frequency-domain analysis of NASA67 unsteady flow field[J]. Journal of Aerospace Power, 2007, 22(8): 1371-1377.

Frequency-domain analysis of NASA67 unsteady flow field

  • Received Date: 2006-07-31
  • Rev Recd Date: 2006-10-25
  • Publish Date: 2007-08-28
  • Based on fast fourier transformation for the typical profile of NASA67 unsteady flow field, the rotor-stator interactions, the circumferential distributions of typical unsteady perturbations at the rotor-stator interface and the inter-blade phase angle were analyzed in the frequency-domain.Also, some phenomena difficult to observe in time-domain were visualized in frequency-domain.Finally, the deterministic stresses from five-order harmonic synthesis and unsteady simulation were compared, meanwhile the feasibility and advantage of nonlinear harmonic method in modeling the deterministic stresses were analyzed.

     

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