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.