JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
Other TitleA Survey of Reynolds-Averaged Turbulence Models in Aeronautical Engineering and Their Physical Interpretation Based on Time Scales
Author(jpn)吉澤, 徴; 松尾, 裕一
Author(eng)Yoshizawa, Akira; Matsuo, Yuichi
Author Affiliation(jpn)宇宙航空研究開発機構航空本部数値解析技術研究グループ(JAXA); 宇宙航空研究開発機構航空本部数値解析技術研究グループ(JAXA)
Author Affiliation(eng)Numerical Simulation Research Group, Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA); Numerical Simulation Research Group, Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA)
Issue Date2015-03-10
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構研究開発報告
JAXA Research and Development Report
Start page1
End page21
Publication date2015-03-10
Abstractレイノルズ平均乱流モデルは工学諸分野において広く利用されているが,分野間での独自性も強い.とくに,航空工学分野と機械工学をはじめとする他分野との差異は,顕著である.航空工学分野の特徴として,層流と乱流両状態の共存,圧縮性などの複雑因子の存在,翼性能を上げるために要求される計算精度の高さなどがあり,その結果,モデルが他分野に比べて著しく複雑になっている. 本論では,乱流中に含まれる特性時間の視点で,航空工学分野の代表的モデルである,Baldwin-Lomaxの0方程式モデル,Spalart-Allmarasの1方程式(乱流粘性率輸送方程式)モデル,Menterの2方程式モデルを考察する.本論では,各モデルの本質を時間スケールに焦点を当てた物理的観点から理解することを目指す.
Reynolds-averaged turbulence models are widely used in various engineering fields, with much originality in each field. Specifically, a big difference may be observed between the aeronautical field and the others represented by the mechanical one. The primary features of aeronautical Reynolds-averaged models are linked to the following three points: the coexistence of laminar and turbulent states, the complex ingredients such as density variation, and the high accuracy of computed results required for the design of airfoils etc. In this article, detailed discussions are made about the physical meaning of the Baldwin-Lomax (zero-equation) model, the Sparart-Allmaras (one-equation or turbulent-viscosity transport-equation) model, and the Menter (two-equation) model. The present article aims at understanding their essence from a physical viewpoint based on time scales.
Description形態: 図版あり
Physical characteristics: Original contains illustrations
KeywordsReynolds-average; turbulence model; aeronautical engineering; time scale
Document TypeTechnical Report
JAXA Category研究開発報告
NASA Subject CategoryFluid Mechanics and Thermodynamics
Report NoJAXA-RR-14-010

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