JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
64303013.pdf1.41 MB
titleNACA0015周りのtrailing edge noiseの数値シミュレーション
Other TitleNumerical Simulation around NACA0015 with Tonal Noise Generation
Author(jpn)黒滝, 卓司; 住, 隆博; 跡部, 隆; 桧山, 淳
Author(eng)Kurotaki, Takuji; Sumi, Takahiro; Atobe, Takashi; Hiyama, Jun
Author Affiliation(jpn)宇宙航空研究開発機構研究開発本部; 宇宙航空研究開発機構研究開発本部; 宇宙航空研究開発機構研究開発本部; 三向ソフトウェア
Author Affiliation(eng)Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Sanko Software
Issue Date2009-02-27
PublisherJapan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構
Publication titleJAXA special publication: Proceedings fo 40th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2008
宇宙航空研究開発機構特別資料: 第40回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2008論文集
VolumeJAXA-SP-08-009
Publication date2009-02-27
Languagejpn
eng
AbstractA new numerical simulation approach is applied to the flow around an NACA0015 aerofoil with tonal noise generation including the natural transition on the suction side. The acoustic fields clearly show the radiation of sound waves from just after the trailing edge region. Numerical simulations also capture a separated region at the trailing edge on the pressure side. The linear stability analysis on the pressure side shows the possibility of the existence of T-S waves and the most unstable frequency up to the separation almost coincides with the peak frequency. The power spectrum distribution of stream wise velocity fluctuation clearly indicates that the generation of T-S waves on the pressure side is strongly relevant to the determination mechanism of the selection of peak frequency of the tonal edge noise and that the selfexcited feedback mechanism exists between just after the stagnation point at the leading edge and the trailing edge region.
Description形態: カラー図版あり
会議: 第40回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2008. 会期: 2008年6月12日-6月13日. 会場: 東北大学片平キャンパス
Document TypeTechnical Report
JAXA Category特別資料
ISSN1349-113X
NCIDAA11984031
SHI-NOAA0064303013
Report NoJAXA-SP-08-009
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/16060


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