Development of Prediction Method for Aerodynamics Noise Generated Inside Tailgate Gap Sections
テールゲート見切り内部で発生する空力騒音予測手法の開発
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20265041
- Paper/Info type
- Proceedings (Spring)
No.9-26
- Pages
- 1-5(Total 5 p)
- Date of publication
- May 2026
- Publisher
- JSAE
- Language
- Japanese
- Event
- 2026 JSAE Annual Congress (Spring)
Detailed Information
| Author(J) | 1) 伊藤 祐太, 2) 山田 悟, 3) 齋田 歩, 4) Lorenzo Prati, 5) 安岡 志朗 |
|---|---|
| Author(E) | 1) Yuta Ito, 2) Satoru Yamada, 3) Ayumu Saita, 4) Lorenzo Prati, 5) Shiro Yasuoka |
| Affiliation(J) | 1) トヨタ自動車, 2) ダッソーシステムズ, 3) トヨタ自動車, 4) Dassault Systemes Singapore Pte, 5) トヨタ自動車 |
| Affiliation(E) | 1) Toyota Motor, 2) Dassault Systemes, 3) Toyota Motor, 4) Dassault Systemes Singapore Pte, 5) Toyota Motor |
| Abstract(J) | 静粛性は自動車の重要な商品性であり，騒音低減は主要な開発項目の一つとなっている．近年，HEVやBEVなどの電動車が普及する事でエンジンノイズの寄与度縮小，若しくは考慮が不要になった事や，振動騒音の低減技術向上によりロードノイズ・モーターノイズが低減するなど，高速走行時における空力騒音の寄与度が相対的に拡大している．空力騒音は，車両形状や見切り部での圧力変動が発生原因となる．これらを設計初期の段階で評価する能力は自働車メーカーにとって非常に重要であり，これまで車両形状で発生する空力騒音予測手法を開発してきた．本発表では，格子ボルツマン法（LBM) を用いた数値流体解析により，バックドア見切り内部で発生する空力騒音予測手法を開発し，実機との相関結果を報告する． Translation |
| Abstract(E) | Quietness is an important aspect of a vehicle's commercial appeal, and noise reduction has become one of the major development objectives. In recent years, with the spread of electrified vehicles such as HEVs and BEVs, the contribution of engine noise has diminished or even become negligible. Furthermore, advances in vibration and noise reduction technologies have lowered road noise and motor noise, resulting in the relative increase in the contribution of aerodynamic noise during high-speed driving. Aerodynamic noise is caused by pressure fluctuations around the vehicle's shape and groove sections. The ability to evaluate these factors at the early stages of design is extremely important for automobile manufacturers, and prediction methods for aerodynamic noise generated by vehicle shapes have been developed thus far. In this presentation, we report on the development of a prediction method for aerodynamic noise generated inside the backdoor groove section, using numerical fluid analysis based on the Lattice Boltzmann Method (LBM), along with correlation results between simulations and actual measurements. |
