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Other TitleNumerical Analysis on Unsteady Aerodynamic Characteristics of Corrugated Wing Section
Author(jpn)濵﨑, 勝俊; 鈴木, 宏二郎
Author(eng)Hamasaki, Katsutoshi; Suzuki, Kojiro
Author Affiliation(jpn)東京大学大学院; 東京大学大学院新領域創成科学研究科
Author Affiliation(eng)Graduate School, The University of Tokyo; Graduate School of Frontier Sciences, The University of Tokyo
Issue Date2013-03-29
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料
JAXA Special Publication: Proceedings of 44th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2012
Start page231
End page236
Publication date2013-03-29
AbstractIt is important to realize the unsteady aerodynamics of the wing in relation to the flow field around it in low Reynolds number flow. In this study, the numerical analysis of the two-dimensional flow around a corrugated wing section at Reynolds number 10,000 is carried out. The calculated lift coefficient shows unsteady behavior, depending on the angle of attack. In the case of zero angle of attack, the calculated lift coefficient shows almost steady behavior as well as periodic oscillation. However, the strong unsteadiness is shown in the cases of large angle of attack. The chaotic feature of its unsteadiness is analyzed by the spectral analysis and the attractor reconstruction technique using the time-delay coordinate, as well as the phase-plane plot. As a result, the spectral distributions in the cases of large angle of attack are closely similar to the distribution of the Brownian noise. The observation of the flow field indicates that s""" uch feature is closely related to the periodic or non-periodic motion of the separated vortices over the corrugated wing section. More advanced, essential realization of the obtained spectral distributions similar to of the Brownian noise should be clarified with additional researches.
Description会議情報: 第44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2012 (2012年7月5日-6日. 富山国際会議場大手町フォーラム), 富山市, 富山県
形態: カラー図版あり
Meeting Information: 44th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2012 (July 5-6, 2012. Toyama International Conference Center), Toyama Japan
Physical characteristics: Original contains color illustrations
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-12-010

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