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Reduction of Aero-Acoustics Tonal Noise for a Tractor Cooling Fan
Technical Paper
2021-26-0299
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Currently, noise pollution has become one of the major environmental concerns. To address this, new noise standards and regulations are being introduced and mandate the tractor OEM’s (Original Equipment Manufacturer) to meet the defined noise levels. Fan noise from the cooling fan is one of the key contributors to the overall vehicle noise. Hence, the reduction of fan noise at the source is a very important and critical task. Even though fan noise is broadband in nature its aerodynamic noise sources are most dominant at the higher harmonics of the blade pass frequency (BPF). The aerodynamic noise of a fan can be varied by changing the fan geometry viz., blade profile, fan width and diameter, number of blades, and ring on its periphery. A cooling fan is an important component of the cooling system which ensures adequate airflow for radiator cooling and avoids engine overheating with uniform heat dissipation. The important parameters that need to be considered while designing a cooling fan are noise level, airflow, and power consumption. A good fan design should provide a lower noise level while maintaining adequate airflow for the engine. The various fan designs are numerically simulated using experimentally validated CFD (Computational Fluid Dynamics) and CAA (Computational Aero Acoustics) techniques with appropriate boundary conditions to predict the airflow and noise level, respectively. With the aid of simulation, an improved 7-blade fan was developed with new blade profile and a ring on its periphery. The optimum blade profile ensured increased airflow for engine cooling and the ring on its periphery avoids turbulence resulting in lower noise. This project will also be considered for further validation plans on real-time vehicle applications to realize the objective of design as future scope of work.
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Avinash, D., Shankar, M., Maller, R., and V, R., "Reduction of Aero-Acoustics Tonal Noise for a Tractor Cooling Fan," SAE Technical Paper 2021-26-0299, 2021, https://doi.org/10.4271/2021-26-0299.Data Sets - Support Documents
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References
- Harkude , M.N. and Malagi , R.R. Automobile Noise and Vibration - Sources, Prediction, and Control Proceeding of NCRIET-2015 & Indian J. Sci. Res 12 1 2015 001 006
- Neise , W. Review of Fan Noise Generation Mechanisms and Control Methods Fan Noise - An International INCE Symposium CETIM Senlis, France 45 56 1992
- Lowson , M.V. Reduction of Compressor Noise Radiation Journal of the Acoustical Society of America 1968 37 50
- Blake , W.K. Mechanics of Flow-Induced Sound and Vibration Second 1 2017
- Kato , C. , Kaiho , M. , and Manabe , A. An Overset Finite-Element Large-Eddy Simulation Method with Application to Turbomachinery and Aeroacoustics Journal of Applied Mechanics 70 1 2003 32 43
- Gutin , L. 1948
- Lighthill , J.M. On Sound Generated Aerodynamically Vol-I - General Theory Proceedings of the Royal Society of London (A) 211 1952 564 587
- Curle , N. The Influence of Solid Boundaries Upon Aerodynamic Sound Proceedings of the Royal Society (A) 231 1955 505 514
- Ffowcs Williams , J.E. and Hawkings , D.L. Sound Generation by Turbulence and Surfaces in Arbitrary Motion Philosophical Transactions of the Royal Society (A) 264 321 1969 342
- Neise , W. Review of Noise Reduction Methods for Centrifugal Fans J. Eng. Ind., ASME 104 2 1982 151 161
- Carolus , T. Fans: Aerodynamic Design, Sound Prediction, Construction 3rd Wiesbaden Teubner Verlag 2003
- Bommes , L. , Fricke , J. , and Grundmann , R. Fans Essen Vulkan Verlag 2003
- Khelladi , S. , Kouidri , S. , Bakir , F. , and Rey , R. Predicting Tonal Noise from a High Rotational Speed Centrifugal Fan Journal of Sound and Vibration 313 1-2 2008 113 133
- Müller , G. and Möser , M. Handbook of Engineering Acoustics 2012 598 616
- Ansys Inc. 2019
- Goldstein , M.E. Aeroacoustics McGraw-Hill Book Company 1976
- Mulvany , N.J. , Chen , L. , Tu , J.Y. , and Anderson , B. 2004
- Neise , W. Noise Reduction in Centrifugal Fans: A Literature Survey Journal of Sound and Vibration 43 1976 375 403
- Baad , P.K. Effects of Acoustic Loading on Axial Flow Fan Noise Generation Noise Control Engineering 8 1977 5 15
- Chiu , W.-S. , Lauchle , G.C. , and Thompson , D.E. Subsonic Axial Flow Fan Noise and Unsteady Rotor Force Journal of Acoustic Society of America 85 2 1989 641 647
- Lee , S. , Kim , K.-Y. , Kim , J.-Y. , and Yang , G.-C. A Study of the Effects of Non-Uniform Inlet Flows Upon Performance and Tonal Radiation from a Propeller Fan Conference proceeding of ASME Fluids Engineering Division Summer Meeting 1 9 1998