A study of acoustic resonance in a low-speed multistage compressor
- Rolls-Royce PLC, Derby (United Kingdom)
Measurements are presented of a resonant acoustic phenomenon occurring in a low-speed multistage compressor. The results show that this phenomenon shares many characteristics with acoustic resonance as measured in high-speed compressors. These similarities include a rotating pressure field, several acoustic frequencies corresponding to different circumferential modes, step changes in frequency as the flow rate is increased, and acoustic frequencies that are independent of flow coefficient, shaft speed, and the axial length of the compression system. The paper includes measurements of the helical structure of the rotating pressure field and of the variation in amplitude of the acoustic signal over a stator exit plane.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 330488
- Report Number(s):
- CONF-970604-; ISSN 0889-504X; TRN: IM9915%%4
- Journal Information:
- Journal of Turbomachinery, Vol. 121, Issue 1; Conference: 42. international gas turbine and aeroengine congress and exhibition, Orlando, FL (United States), 2-5 Jun 1997; Other Information: PBD: Jan 1999
- Country of Publication:
- United States
- Language:
- English
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