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Acoustic resonance in rotor cascades caused by inlet distortion

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Study establishes a model revealing acoustic resonance effects in rotor cascades, implying design adjustments to minimize vibrations.

This research aims to explain acoustic resonance in rotor cascades caused by inlet distortion and its implications for turbomachinery.
Developed a theoretical model to analyze acoustic resonance phenomena.
Focused on the effects of inlet distortion in rotating annular cascades.
Proposed a modified Campbell diagram for design applications.
Established model aligns with experimental trends of Parker-type rotor acoustic resonances.
High unsteady blade loading observed at resonance frequencies, exceeding cut-on frequency.
Resonance frequencies intersect with synchronous excitation frequencies across varied speeds.

Shen et al. (2026) studied this question.

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