This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Transient SEA Model for Transmission of Non-Stationary Wind Noise
Technical Paper
2019-01-1473
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Automakers have reported that passenger perception of vehicle interior wind noise is strongly correlated to the non-Gaussian and non-stationary character of the exterior aero-acoustic wind loading. Researchers in other domains have shown that leptokurtic non-Gaussian loading (Kurtosis κ>3) can be synthesized by non-stationary modulation of otherwise Gaussian random loading. This paper introduces a transient statistical energy analysis (SEA) model for the aero-vibro acoustic transmission of non-stationary wind noise which uses the same approach - a modulation of otherwise Gaussian random fluctuating pressure loading, in each one third octave band. The authors have previously shown that the non-stationary character of random wind loading can be measured in a wind tunnel or on the road with a suitable surface pressure microphone array. This paper reviews the formulation of a Transient SEA model and the predicted modulation frequency response functions for transmission of non-stationary exterior wind noise. Non-stationary wind noise test data is then used to show the validity of the model, correlating the modulation statistics of exterior surface pressure, with the modulation statistics of interior wind noise response.
Recommended Content
Authors
Citation
Bremner, P., Clifton, S., and Todter, C., "A Transient SEA Model for Transmission of Non-Stationary Wind Noise," SAE Technical Paper 2019-01-1473, 2019, https://doi.org/10.4271/2019-01-1473.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 |
Also In
References
- Peric , C. , Watkins , S. , Linqvist , E. , and Saunders , J. Effects of On-Road Turbulence on Automotive Wind Noise: Comparing Wind-Tunnel and On-Road Tests SAE Technical Paper 970406 1997 10.4271/970406
- Amman , S. , Greenberg , B. , Gulker , B. and Abhyankar , S. Subjective Quantification of Wind Buffeting Noise Proc. SAE NVH Conf. Traverse City, MI 1999
- Blommer , M. , Amman , S. , Abhyankar , S. , and Dedecker , B. Sound Quality Metric Development for Wind Buffeting and Gusting Noise SAE Technical Paper 2003-01-1509 2003 10.4271/2003-01-1509
- Cogotti , D. , Cardano , G. , Carlino , and Cogotti , F. Aerodynamics and Aeroacoustics of Passenger Cars in Controlled High Turbulence Flow: Some New Results SAE Technical Paper 2005-01-1455 2005 10.4271/2005-01-1455
- Riegel , M. , Helfer , M. , and Wiedemann , J. The Effect of Turbulence on In-Cabin Wind Noise - A Comparison of Road and Wind Tunnel Results Proc. 6th MIRA Intnl. Vehicle Aerodynamics Conf 2006
- Krampol , S. , Riegel , M. , and Wiedemann , J. A Procedure to Simulate the Turbulent Noise Interior of Cars Proc. NAG/DAGA Intnl. Conf. Rotterdam 2009
- Thompson , M.A. , Watkins , S. , and Kim , J. Wind-Tunnel and On-Road Wind Noise: Comparison and Replication SAE Technical Paper 2013-01-1255 2013
- Watkins , S. , Thompson , M.A. , and Alam , F. Transient Wind Noise SAE Technical Paper 2013-01-0096 2013 10.4271/2013-01-0096
- Lindener , N. , Miehling , H. , Cogotti , A. , Cogotti , F. , and Maffei , M. Aeroacoustic Measurements in Turbulent Flow on the Road and in the Wind Tunnel SAE Technical Paper 2007-01-1551 2007 10.4271/2007-01-1551
- Oettle , N. 2013
- Terakado , S. et al Experimental Investigation of Aeroacoustic Cabin Noise in Unsteady Flow by Means of a New Turbulence Generating Device SAE World Congress Detroit, MI 2017
- Hartmann , M. , Ocker , J. et al Wind Noise Caused by the A-Pillar and the Side Mirror Flow Proc. AIAA Aeroacoustics Conf. Colorado Springs, CO 2012
- Bremner , P.G , Huff , J. , and Bolton , J.S. A Model Study of How Tire Construction and Materials Affect Vibration-Radiated Noise SAE 972014, Proc. SAE Noise & Vibration Conf. Traverse City 1997
- Peng , G.C. SEA Modeling of Vehicle Wind Noise and Load Case Representation SAE Technical Paper 2007-01-2304 2007 10.4271/2007-01-2304
- Bremner , P.G. , Clifton , S.M. , and Todter , C. Characteristics of Non-Stationary Sources of Wind Noise Measured with a Surface Pressure Array SAE Technical Paper 2017-01-1785 2017 10.4271/2017-01-1785
- Rouillard , V. and Sek , M.A. Synthesizing Nonstationary, Non-Gaussian Wheeled Vehicle Vibrations Proc. Intnl. Heavy Vehicle Technology Symp. HVT11 Melbourne, Australia 2010
- Thrane , N. The Hilbert Transform Bruel & Kjaer Technical Review 3 1984
- Lyon , R.H. and DeJong , R.G. Theory and Application of Statistical Energy Analysis Second Butterworth -Heinemann 1995
- DeJong , R.G. , Bharj , T.S. , and Lee , J.J. Vehicle Wind Noise Analysis Using a SEA Model with Measured Source Levels SAE Technical Paper 2001-01-1629 2001 10.4271/2001-01-1629
- Bremner P.G. and Wilby , J.F Aero-Vibro-Acoustics: Problem Statement and Model-Based Design Methods Proc. AIAA Aeroacoustics Conf. Breckenridge CO 2002
- Bremner , P.G. An Aero-Vibro-Acoustic Transmission Model for Non-Stationary Random Wind Noise; Part I Theory Sound & Vibration 2019
- Terakado , S. and Bremner , P.G. An Aero-Vibro-Acoustic Transmission Model for Non-Stationary Random Wind Noise; Part II Wind Tunnel Validation Sound & Vibration 2019