Effects of Slat Position on the Slat Noise Characteristics
| Autor: | Amemiya, Kazuhisa, Murayama, Mitsuhiro, Yamamoto, Kazuomi, Hirai, Toru, Tanaka, Kentaro, Ikeda, Tomoaki |
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| Jazyk: | japonština |
| Rok vydání: | 2019 |
| Zdroj: | 宇宙航空研究開発機構特別資料: 第50回流体力学講演会/第36回航空宇宙数値シミュレーション技術シンポジウム論文集 = JAXA Special Publication: Proceedings of the 50th Fluid Dynamics Conference / the 36th Aerospace Numerical Simulation Symposium. :183-188 |
| ISSN: | 2433-2232 |
| Popis: | 第50回流体力学講演会/第36回航空宇宙数値シミュレーション技術シンポジウム (2018年7月4日-6日. 宮崎市民プラザ), 宮崎市, 宮崎 50th Fluid Dynamics Conference /the 36th Aerospace Numerical Simulation Symposium (July 4-6, 2018. Miyazaki Citizen's Plaza), Miyazaki, Japan In this study, effect of leading-edge slat position on the slat noise characteristics is investigated by aeroacoustic simulations using Delayed Detached Eddy Simulation toward slat noise reduction. Previous studies indicated that smaller recirculation region in the slat cove with increasing angle of attack results in decrease of broadband noise and narrowband peaks (NBPs). To achieve smaller recirculation region in the slat cove at a target angle of attack, the overlap between slat and main wing is changed. From the analysis of far-field sound pressure, it is found that low frequency broadband fluctuation and NBPs decrease, and the overall sound-pressure levels is significantly reduced especially in the direction of the lower surface side as a result of the noise reduction of slat itself. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA1830029022 レポート番号: JAXA-SP-18-005 |
| Databáze: | OpenAIRE |
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