Computational Aero-Acoustics Simulation of Compressor Whoosh Noise in Automotive Turbochargers

Paper #:
  • 2013-01-1880

Published:
  • 2013-05-13
DOI:
  • 10.4271/2013-01-1880
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.
Pages:
8
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.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2016-11-15
Technical Paper / Journal Article
2010-04-12
Training / Education
2011-04-12