This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Computational Aeroacoustic Study of Windshield Wiper Influence on Passenger Vehicle Greenhouse Windnoise
Technical Paper
2014-01-2051
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents an approach to numerically simulate greenhouse windnoise. The term “greenhouse windnoise” here describes the sound transferred to the interior through the glass panels of a series vehicle. Different panels, e.g. the windshield or sideglass, are contributing to the overall noise level. Attached parts as mirrors or wipers are affecting the flow around the vehicle and thus the pressure fluctuations which are acting as loads onto the panels.
Especially the wiper influence and the effect of different wiper positions onto the windshield contribution is examined and set in context with the overall noise levels and other contributors. In addition, the effect of different flow yaw angles on the windnoise level in general and the wiper contributions in particular are demonstrated.
As computational aeroacoustics requires accurate, highly resolved simulation of transient and compressible flow, a Lattice-Boltzmann approach is used. The noise transmission through the interior is then modeled by statistical energy analysis (SEA), representing the vehicle cabin and the panels excited by the flow.
Results are verified by comparisons to windtunnel experiments.
Recommended Content
Authors
Topic
Citation
Neuhierl, B., Schroeck, D., Senthooran, S., and Moron, P., "A Computational Aeroacoustic Study of Windshield Wiper Influence on Passenger Vehicle Greenhouse Windnoise," SAE Technical Paper 2014-01-2051, 2014, https://doi.org/10.4271/2014-01-2051.Also In
References
- Moron , P. , Powell , R. , Freed , D. , Perot , F. et al. A CFD/SEA Approach for Prediction of Vehicle Interior Noise due to Wind Noise SAE Technical Paper 2009-01-2203 2009 10.4271/2009-01-2203
- Chen , H. , Teixeira , C. and Molvig , K. Digital Physics Approach to Computational Fluid Dynamics, Some Theoretical Feature Int. J. Mod. Phys. C 8 4 675 1997
- Chen , S. and Doolen , G. Lattice Boltzmann Method for Fluid Flows Ann. Rev. Fluid Mech. 30 329 364 1998
- Senthooran , S. et al Prediction of wall pressure fluctuations on an automobile side-glass using a lattice-Boltzmann method AIAA Paper 2006-2559 Cambridge, Massachusetts 2006
- Lepley , D. , Graf , A. , Powell , R. , and Senthooran , S. A Computational Approach to Evaluate the Vehicle Interior Noise from Greenhouse Wind Noise Sources SAE Technical Paper 2010-01-0285 2010 10.4271/2010-01-0285
- Senthooran , S. , Mutnuri , L. , Amodeo , J. , Powell , R. et al. A Computational Approach to Evaluate the Automotive Windscreen Wiper Placement Options Early in the Design Process SAE Int. J. Passeng. Cars - Mech. Syst. 6 2 1262 1268 2013 10.4271/2013-01-1933
- Schröck , D. , Neuhierl , B. , Moron , P. , Powell , R. An Approach to a Holistic Interior Noise Prediction Including Simulated and Experimental Contributions, Progress in Vehicle Aerodynamics and Thermal Management FKFS conference Stuttgart 2013
- Müller , G. , Jany , J. , and Neuhierl , B. Reducing a Sports Activity Vehicle's Aeroacoustic Noise using a Validated CAA Process SAE Technical Paper 2012-01-1552 2012
- Moron , P. , Hazir , A. , Crouse , B. , Powell , R. et al. Hybrid Technique for Underbody Noise Transmission of Wind Noise SAE Technical Paper 2011-01-1700 2011 10.4271/2011-01-1700