タイトル | Analysis of three dimensional flow around NACA0012 airfoil at low Reynolds numbers |
その他のタイトル | Analysis of three dimensional flow around NACA0012 airfoil at low Reynolds numbers |
著者(日) | 中江 雄亮; 本橋 龍郎; 小紫 誠子; 桑原 邦郎 |
著者(英) | Nakae, Yusuke; Motohashi, Tatsuo; Komurasaki, Satoko; Kuwahara, Kunio |
著者所属(日) | 日本大学 大学院理工学研究科; 日本大学 理工学部 航空宇宙工学科; 日本大学 理工学部 数学科; 計算流体力学研究所 |
著者所属(英) | Nihon University Graduate School of Science and Technology; Nihon University Department of Aerospace Engineering, College of Science and Technology; Nihon University Department of Mathematics, College of Science and Technology; Institute of Computational Fluid Dynamics |
発行日 | 2007-02 |
刊行物名 | 平成18年度/第50回日本大学理工学部学術講演会講演論文集 Proceedings of the 2006FY/50th Science Lecture Meeting of the College of Science and Technology, Nihon University |
開始ページ | 1118 |
終了ページ | 1119 |
刊行年月日 | 2007-02 |
言語 | eng |
抄録 | Three-dimensional numerical simulations have been made to clarify the aerodynamic characteristics of the airfoil (NACA0012) at low Reynolds numbers below 10(exp 5) and to reveal differences between the two-dimensional numerical simulation and the three-dimensional one. Two- and three-dimensional time-dependent Navier-Stokes equations are solved by finite-difference approximation without using any turbulence models. And the multi-directional finite-difference scheme was also utilized to stabilize computations and to compute precisely. In three-dimensional numerical simulations, spanwise transformations of flow fields are observed, especially at the range of high angle of attack. And, longitudinal vortex structure might play an important role in three-dimensionalization of the boundary layer on the airfoil. These transformations can never be simulated by two-dimensional computation. |
キーワード | three dimensional flow; aerodynamic characteristic; numerical simulation; airfoil; low Reynolds number; separation bubble; boundary condition; flow distribution; Navier-Stokes equation; 3次元流; 空力特性; 数値シミュレーション; 翼型; 低レイノルズ数; 剥離泡; 境界条件; 流れの分布; ナビエ・ストークス方程式 |
資料種別 | Conference Paper |
ISSN | 1346-9754 |
SHI-NO | AA0063202036 |
URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/51529 |