Abstract: For the development of low-noise fan designs the sound generation must be reduced at the source, but also sound transmission effects through the rotor can be exploited to reduce the noise emitted to the far-field. Rotor ...

Abstract: Rotating instability (RI) occurs at offdesign conditions in axial compressors, predominantly in rotor configurations with large tip clearances. Characteristic spectral signatures with sidebyside peaks below the blade passing ...

Abstract: Rotating instability (RI) occurs at offdesign conditions in compressors, predominantly in configurations with large tip or hub clearance ratios of s* ≥3%. RI is the source of the blade tip vortex noise and a potential ...