This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Computational Aero-Acoustics Simulation of Compressor Whoosh Noise in Automotive Turbochargers
Technical Paper
2013-01-1880
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The advent of Eco-Boost technology in gasoline engines creates new challenges that need to be addressed with innovative designs. One of them is flow induced noise caused by flow, entering the turbocharger, at off design operation. At certain vehicle operation conditions, the mass flow rate and pressure ratio are such that compressor wheel generates a broad band frequency noise caused by flow separation from blade surfaces, which is called ‘whoosh’ noise.
Flow bench and engine testing can be used to detect flow induced noise, but understanding the fundamental mechanisms of such noise generation is necessary for developing an effective design. This paper describes Computational Aero-Acoustic (CAA) analyses performed to study the effects of inlet condition on the whoosh noise. A 3D Computational Fluid Dynamics (CFD) simulation performed including the entire compressor wheel and volute. The wheel consisted of six main and six splitter blades.
Based on the CAE results, a Leading-Edge Step at the compressor inlet in conjunction with an Inlet Guide Vane (or swirl vane) (IGV) were proposed to lower whoosh noise. Effectiveness of such innovative design is demonstrated in experimental testing.
Recommended Content
Authors
Citation
Karim, A., Miazgowicz, K., Lizotte, B., and Zouani, A., "Computational Aero-Acoustics Simulation of Compressor Whoosh Noise in Automotive Turbochargers," SAE Technical Paper 2013-01-1880, 2013, https://doi.org/10.4271/2013-01-1880.Also In
References
- Brand , J. , Fallen , M. , and Kammer , H. Future Technologies against Turbocharger Noise Transferred to Exhaust Systems SAE Technical Paper 2008-01-0891 2008 10.4271/2008-01-0891
- Teng , C. , Pan , F. , Missaoui , J. , and Deraad , S. Flow Noises Associated with Integrated Compressor Anti-Surge Valve SAE Technical Paper 2011-01-1532 2011 10.4271/2011-01-1532
- Allam , S. , Knutsson , M. , and Boden , H. Development of Acoustic Models for High Frequency Resonators for Turbocharged IC-Engines SAE Technical Paper 2012-01-1559 2012 10.4271/2012-01-1559
- Teng , C. and Homco , S. Investigation of Compressor Whoosh Noise in Automotive Turbochargers SAE Int. J. Passeng. Cars - Mech. Syst. 2 1 1345 1351 2009 10.4271/2009-01-2053
- Trochon , E. A New Type of Silencers for Turbocharger Noise Control SAE Technical Paper 2001-01-1436 2001 10.4271/2001-01-1436
- Kindl , M. Helmut , Schorn , A. Norbert , Horst Schulte , Serrano , R. Jose , Margot , Xandra and Donayre , C. J Influence of Various Compressor Inlet Designs on Compressor Performance Ford Research and Advanced Engineering Technical Reports September 2004 SRR-2004-0151
- Brooks , Thomas F. , Pope , D. Stuart , and Marcolini , Michael A. Airfoil Self Noise and Prediction NASA Reference Publication 1218 July 1989
- Pampren , Ronald C. Compressor Surge and Stall Concepts ETI, inc. Norwich, Vermont 1993