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Vehicle Glass Design Optimization Using a CFD/SEA Model
Technical Paper
2007-01-2306
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A new methodology to predict vehicle interior wind noise using CFD results has been developed. The CFD simulation replaces wind tunnel testing for providing flow field information around vehicle greenhouse. A loadcase model based on the CFD results is used to excite an SEA vehicle model. This new approach has been demonstrated on a production vehicle with success for the frequency range of 250-10K Hz. The CAE prediction of interior wind noise agrees within 0.2 sones from wind tunnel testing. The model has been used to evaluate wind noise performance with different door glass design parameters. A glass thickness change from 3.8 mm to 4.8 mm results in 1.1 sones improvement, which agrees well to 1.4 sones improvement from testing. Laminated glass with about 3 times higher damping results in 2.5 sones improvement. This methodology using CFD results can be used in the early stage of product development to impact designs.
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Topic
Citation
Lee, J. and DeJong, R., "Vehicle Glass Design Optimization Using a CFD/SEA Model," SAE Technical Paper 2007-01-2306, 2007, https://doi.org/10.4271/2007-01-2306.Also In
References
- DeJong, R. G. Bharj, T.S. Lee, J.J. “Vehicle Wind Noise Analysis Using a SEA Model with Measured Source Levels,” SAE Paper No. 2001-01-1629 2001
- DeJong, R.G. “A Study of Vehicle Interior Noise Using Statistical Energy Analysis,” SAE Paper No. 850960 1985
- Blake, W.M. Mechanics of Flow-Induced Sound and Vibration Academic Press London 1986