Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2014.10a
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- Pages.800-811
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- 2014
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- 1598-2548(pISSN)
Combining CFD/FEM/BEM/SEA to Predict Interior Vehicle Wind Noise - Validation Case CAA German Working Group
자동차 유동기인 실내소음 예측을 위한 CFD/FEM/BEM/SEA 의 조합 및 검증 - CAA German Working Group
Abstract
Recent developments in the prediction of the contribution of windnoise to the interior SPL have opened a realm of new possibilities in terms of i) how the convective and acoustic sources terms can be identified, ii) how the interaction between the source terms and the side glass can be described and finally iii) how the transfer path from the sources to the interior of the vehicle can be modelled. This work discusses in details these three aspects of wind noise simulation and recommends appropriate methods to deliver required results at the right time based on i) simulation and experimental data availability, ii) design stage at which a decision must be made and iii) time available to deliver these results. Several simulation methods are used to represent the physical phenomena involved such as CFD, FEM, BEM, FE/SEA Coupled and SEA. Furthermore, a 1D and 2D wavenumber transformation is used to extract key parameters such as the convective and the acoustic component of the turbulent flow from CFD and/or experimental data whenever available. This work focuses on the validation of the wind noise source characterization method and the vibro-acoustic models on which the wind noise sources are applied.
Keywords
- Wind Noise;
- Convective & Acoustic Components;
- Aero-Vibro-Acoustics;
- FEM;
- BEM;
- SEA;
- CFD;
- Corcos Model;
- Wavenumber Transformation
- 유동소음;
- 대류 및 음향 성분;
- 유동-구조-음향;
- 유한요소법;
- 경계요소법;
- 통계적 에너지 해석법;
- 전산유체해석;
- Corcos 모델;
- 파수 변환;