This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Flow Instabilities and Noise Generation in Vane Axial Fans Due to Rotating Stall and Surge
Annotation ability available
Sector:
Language:
English
Abstract
The main characteristic of axial flow fans is instabilities in their performance and noise characteristics in partial load operation. Those instabilities are a consequence of rotating stalls created in the rotor blade and/or in guide vane cascade. At some operation conditions the rotating stalls caused an appearance of surge representing the lowest region of fan operating stability. The rotating stalls and especially the surge appearances caused a steep increase in the emitted noise and lowered the performances of the fan. The present paper highlights the rotating stall generation phenomena and its influence on the emitted total noise level and noise spectra at axial flow fans with inlet and outlet guide vanes.
Recommended Content
Aerospace Standard | Installed Outdoor Engine Testing |
Aerospace Standard | Turbofan and Turbojet Gas Turbine Engine Test Cell Correlation |
Technical Paper | Radial and Tangential Flow Fans-An Alternative to Axial Flow Fans for Low Noise Automotive Cooling Systems |
Authors
Topic
Citation
Čudina, M., "Flow Instabilities and Noise Generation in Vane Axial Fans Due to Rotating Stall and Surge," SAE Technical Paper 952104, 1995, https://doi.org/10.4271/952104.Also In
References
- Longhouse, R. E. Noise Mechanism Separation and Design Consideration for Low Tip-Speed Axial-Flow Fans. Journal of Sound and Vibration 1976 48 4 1976
- Longhouse, R. E. Vortex Shedding Noise of Low Tip Speed, Axial Flow Fans Journal of Sound and Vibration 1977 53 1 1977
- Longhouse, R.E. Control of Tip-Vortex Noise of Axial Flow Fans by Rotating Shrouds Journal of Sound and Vibration 1978 58 2 1978
- Greitzer, E. M. The Stability of Pumping System-The 1980 Freeman Scholar Lecture Journal of Fluids Engineering 103 1981
- Eckert, B. Schnell, E. Springer-Verlag Berlin/Göttingen/Heidelberg, Germany 1961
- Schultz, H. Springer-Verlag Berlin 1977
- Stenning, A.H. Rotating Stall and Surge Transaction of the ASME Journal of Fluids Engineering 102 1980
- Suzuki, S. Ugai, Y. Rotating Stall Noise Generated by Centrifugal Fan and its Control Proceedings of the Inter-Noise 88 Avignon, France 1988
- Okada, K. Excellent Low Frequency Noise due to the Rotating Stall of Centrifugal Fan Proceedings of the Inter-Noise 88 Avignon, France 1988
- Mongeau, L. Thompson, D.E. Mclaughlin, D.K. Sound Generation by Rotating Stall in Centrifugal Turbo Machines Journal of Sound and Vibration 1993 163 1 1993
- Čudina, M. Noise Generated by a Vane-Axial Fan with Inlet Guide Vanes Noise Control Engineering Journal 7 8 39 1 1992
- Čudina, M. Trenc, F. Steržaj M. Noise Analysis of the Engine Cooling Fan Proceedings of the INTER NOISE '90 Goethebourg, Sweden 1990
- Čudina, M. Noise of Axial Flow Fans Operating at Partial Loads Proceedings of the IAT'95 Conference Radenci, Slovenia 1995