Spatial Correlation of Turbulent Flow Pressure Fluctuations Downstream of an Obstruction
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- 形態
- 価格
- 一般価格(税込):¥6,600 会員価格(税込):¥5,280
- 文献・情報種別
- SAE Paper
No.2021-01-1049
- 掲載ページ
- 1-6(Total 6 p)
- 発行年月
- 2021年 8月
- 出版社
- SAE International
- 言語
- 英語
- イベント
- Noise and Vibration Conference & Exhibition
書誌事項
著者(英) | 1) Richard DeJong, 2) Renard Tubergen, 3) Abigail Willson |
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勤務先(英) | 1) Calvin Engineering, 2) Calvin University, 3) Pennsylvania State University |
抄録(英) | The structural excitation by turbulent flow pressure fluctuations continues to be an important part of vehicle NVH analysis and design. Much of the analytical work on turbulent flow has been limited to flow over smooth, flat surfaces. Measurements and CFD analyses show a significantly different pressure spectrum for flows over an obstruction. The coupling of the turbulent pressure excitation to the structural vibration and transmitted sound depends on the spatial matching between the source and response fields. This paper develops an analytical model for the spatial correlation of turbulent flow pressure fluctuations downstream of an obstruction. Such a model is useful in the early design stage of a vehicle and is compatible with SEA models of the fluid structure interaction. 翻訳 |