A Boundary-Layer Transition Model for the Navier-Stokes Computation for a Natural-Laminar-Flow Airfoil

Material type: 文書・図像類

Author: 河合, 伸坦ほか

Publisher: 航空宇宙技術研究所

Publication date: 1989-11

Material Format: Digital

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Note (General)：: 境界層遷移のモデル化は,自然層流の計算にとって最も重要な決定要因の一つである。そこで,代数乱流モデル付き二次元ナビエ・ストークス方程式を解くための遷移モデルについて述べる。Michelの遷移判定法を遷移モデルとして用い,従来のBaldwinとLomaxの遷移判定法と比較する。計算は,自然層流翼型まわ...

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Material Type: 文書・図像類
Title: A Boundary-Layer Transition Model for the Navier-Stokes Computation for a Natural-Laminar-Flow Airfoil
Author/Editor: 河合, 伸坦
KAWAI, Nobuhiro
Author Heading: 河合, 伸坦
KAWAI, Nobuhiro
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1989-11
Publication Date (W3CDTF): 1989-11
Periodical title: Technical Report of National Aerospace Laboratory TR-1038T
No. or year of volume/issue: 1038T
Volume: 1038T
Pages: 20-
ISSN (Periodical Title): ISSN : 0389-4010
Text Language Code: eng
Target Audience: 一般
Note (General): 境界層遷移のモデル化は,自然層流の計算にとって最も重要な決定要因の一つである。そこで,代数乱流モデル付き二次元ナビエ・ストークス方程式を解くための遷移モデルについて述べる。Michelの遷移判定法を遷移モデルとして用い,従来のBaldwinとLomaxの遷移判定法と比較する。計算は,自然層流翼型まわりの低速流と超臨界自然層流翼型まわりの遷音速流に対して行われた。Michelの判定法を使って計算された結果は,低速流に対して実験結果と良く一致し,自然層流翼型に特有な抵抗曲線のバケットを示す。
Boundary-layer transition modeling is one of the most important deciding factors for the computation of natural laminar flow. So, a transition model for solving the two-dimensional Navier-Stokes equations with an algebraic turbulence model is presented in this paper. Michel’s transition criterion is employed as the transition model and is compared with the conventional Baldwin-Lomax’s transition criterion. Computation was made for the low-speed flow around a natural-laminar-flow airfoil and for the trasonic flow around a supercritical natural-laminairfoil. The results computed by using the Michel's criterion agree well with the experimental results for low-speed flow and exhibit the bucket of the drag polar curve which is typical of a natural-laminar-flow airfoil.
資料番号: NALTR1038000
レポート番号: NAL TR-1038T
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ