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CFD Simulation of Side Glass Surface Noise Spectra for a Bluff SUV
Technical Paper
2006-01-0137
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Simulation of local flow structures in the A-pillar/side glass region of bluff SUV geometries, typical of Land Rover vehicles, presents a considerable challenge. Features such as relatively tight A-pillar radii and upright windscreens produce flows that are difficult to simulate. However, the usefulness of aerodynamics simulations in the early assessment of wind noise depends particularly on the local accuracy obtained in this region. This paper extends work previously published by the author(1) with additional data and analysis. An extended review of the relevant published literature is also provided. Then the degree to which a commercial Lattice-Boltzman solver (Exa PowerFLOW™) is currently able to capture both the local flow structure and surface pressure distribution (both time averaged and unsteady) is evaluated. Influential factors in the simulation are shown to be spatial resolution, turbulence and boundary layer modelling. It is demonstrated that, whilst reasonable predictions are obtained for the surface noise spectra, both the size and strength of the A-pillar vortex are substantially over-predicted. Finally an attempt is made to estimate the frequency range that the simulation could be reasonably expected to capture. This analysis suggests that the simulation is bounded by the limitations of the turbulence model, rather than spatial resolution.
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Citation
Gaylard, A., "CFD Simulation of Side Glass Surface Noise Spectra for a Bluff SUV," SAE Technical Paper 2006-01-0137, 2006, https://doi.org/10.4271/2006-01-0137.Also In
SAE 2006 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V115-6; Published: 2007-03-30
Number: V115-6; Published: 2007-03-30
References
- Gaylard, A. P. Simulation of A-Pillar/Side Glass Flows for Bluff SUV Geometries Fifth MIRA International Conference On Vehicle Aerodynamics 13-14 October 2004 Heritage Motor Centre Warwick, UK
- Lietz, R. Pien, W. Remondi, S. A CFD Validation Study For Automotive Aerodynamics SAE Paper 2000-01-0129 0148-7191 Society of Automotive Engineers, Inc. Warrendale PA 2000
- Amodeo, J The Development of CFD as a Primary Design Tool at Jaguar Cars Fifth MIRA International Conference On Vehicle Aerodynamics 13-14 October 2004 Heritage Motor Centre Gaydon, UK
- Watanabe, M. Harita, M. Hayashi, E. The Effect of Body Shapes on Wind Noise SAE Paper 780266 Society of Automotive Engineers, Inc. Warrendale PA 1978
- Carr, G.W. Potential for Aerodynamic Drag Reduction in Car Design Impact of Aerodynamics on Vehicle Design, SP3 International Association for Vehicle Design London 1983
- Haruna, S. Nouzawa, T. Kamimoto, I. Sato, H. An Experimental Analysis and Estimation of Aerodynamic Noise Using a Production Vehicle SAE Paper. 900316 0148-7191 Society of Automotive Engineers, Inc. Warrendale PA 1990
- Sadakata, O. Kanamaru, K. Kakamu, T. A Consideration Of Wind Noise Reduction By Air Flow Control XXII FISITA Congress September 25-30 1988 Dearborn, Michigan Automotive Systems Technology: The Future SAE P-211. Paper 885115 2.182 2.189 Society of Automotive Engineers Inc. Warrendale PA 1988
- Sovani, S D Chen, K-H Aeroacoustics of an Automotive A-Pillar Raingutter: A Numerical Study with the Ffowcs-Williams Hawkings Method SAE Technical Paper Series 2005-01-2492 SAE 2005 Noise and Vibration Conference and Exhibition Traverse City, Michigan May 16-19 2005
- Murad, N. M. Naser, J. Alam, F. Watkins, S. Simulation of Vehicle A-Pillar Aerodynamics using Various Turbulence Models SAE Paper 2004-01-0231 0-7680-1319-4 Society of Automotive Engineers, Inc. Warrendale PA 2004
- Leep-Apolloni, L. Strumolo, G. S. Gulker, W. Wind Noise Spectral Predictions Using a Lattice-Based Method SAE Technical Paper Series 1999-01-1810 , Proceedings of the 1999 Noise and Vibration Conference, (P-342), Noise and Vibration Conference & Exposition Traverse City, Michigan May 17-20 1999
- Védy, E. Van Lier, L. Parchen R.R. Golliard J. van Beek, P.J.G. Tibaut P. Baier, W. Application of Statistical Noise Generation and Radiation for Aeroacoustic Predictions in the Automotive Industry SAE Technical Paper Series 2005-01-2494 SAE 2005 Noise and Vibration Conference and Exhibition Traverse City, Michigan May 16-19 2005
- Uchida, K. Okumura, K. Aerodynamic Noise Simulation Based on Lattice Boltzmann Method (Surface Pressure Fluctuations Around A-Pillar) SAE Paper 1999-01-1127 0148-7191 Society of Automotive Engineers, Inc. Warrendale PA 1999
- Cooper, K. R. The Effect of Front Edge Rounding and Rear Edge Shaping on the Aerodynamic Drag of Bluff Vehicles in Ground Proximity SAE Paper 850288 Society of Automotive Engineers, Inc. Warrendale PA 1985
- Pervaiz, M. M. Teixeira, C. Two Equation Turbulence Modeling with the Lattice-Boltzmann Method 2 nd International Symposium on Computational Technologies for Fluids/Thermal/Chemical Systems with Industrial Applications August 5th - 8th 1999 Boston, MA
- Anagnost, A. Alajbegovic, A. Chen, H. Hill, D. Teixeira, C. Molvig, K. DIGITAL PHYSICS™ analysis of the Morel body in ground proximity SAE Paper 971039 Society of Automotive Engineers, Inc. Warrendale PA 1997
- Stapleford, W.R. Carr, G.W. Aerodynamic Noise in Road Vehicles: Part 1 MIRA Report 1971/2 1971
- Ogawa, S. Kamioka, T. George, A. R. Review of Aerodynamic Noise Prediction Using CFD SAE Paper 1999-01-1126 0148-7191 Society of Automotive Engineers, Inc. Warrendale PA 1999
- Ayar, A. Ambs, R. Capellmann, C. Schillemeit, B. Matthes, M. Prediction of Flow-Induced Noise in Automotive HVAC Systems Using a Combined CFD/CA Approach SAE Paper 2005-01-0509 2005 SAE World Congress Detroit, Michigan April 11-14 2005
- Belanger, A Private Communication