Establishment of Wind noise Prediction Method Caused by Flow of Vehicle Shape Using CFD.
CFDを用いた車体形状の流れに起因する空力騒音予測手法の確立
- Delivery
- Available on the other site
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- Publication code
- 20244092
- Paper/Info type
- JSAE Transaction
Vol.55 No.2
- Pages
- 381-386(Total 6 p)
- Date of publication
- Mar 2024
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 伊藤 祐太, 2) 若松 幹生, 3) ファン ビン ロン, 4) 安岡 志朗 |
| Author(E) | 1) Yuta Ito, 2) Mikio Wakamatsu, 3) Vinh Long Phan, 4) Shiro Yasuoka |
| Affiliation(J) | 1) トヨタ自動車, 2) トヨタ自動車, 3) トヨタ自動車, 4) トヨタ自動車 |
| Abstract(J) | 空力騒音は,流れの中の乱流により引き起こされる音波による圧力変動が車室内へ透過・伝搬する現象である.本発表では,非定常CFDを用いた車両外形形状により生じる乱流から発生する空力騒音(外形発生音)の予測及び発生部位の特定手法を確立した為,実機とのコリレーション結果と共に報告する. Translation |
| Abstract(E) | Quietness is one of the key factors of quality and competitiveness of a vehicle, and noise reduction is one of the main objectives in vehicle development. In recent years, with the increasing popularity of HEV (Hybrid Electric Vehicle) and BEV (Battery Electric Vehicle), innovations in vibration and noise reduction technology have led to significant reductions of engine noise, road noise and motor noise. As a result, contribution of exterior wind noise has become more dominant, particularly in high-speed cruising conditions. Exterior wind noise is generated by acoustic pressure fluctuation induced by turbulent flow around a vehicle, and it propagates and transmits inside the cabin. In this paper, we propose a method for predicting exterior wind noise and identifying noise sources based on simulation results of the flow field around vehicle and show its validation by comparison with the results of wind tunnel evaluation. |
