半円柱の臨界レイノルズ数前後における風圧分布風洞実験および関連特性

Material type: 文書・図像類

Author: 滝澤, 直人ほか

Publisher: 航空宇宙技術研究所

Publication date: 1985-08

Material Format: Digital

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Note (General)：: Two-dimensional semi-circular cylinders have been tested over a Reynolds number range from 67,000 to 600,000 and over angles of attack of ±90deg, to m...

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Material Type: 文書・図像類
Title: 半円柱の臨界レイノルズ数前後における風圧分布風洞実験および関連特性
Author/Editor: 滝澤, 直人
岡田, 典秋
岩崎, 昭人
TAKIZAWA, Naoto
OKADA, Noriaki
IWASAKI, Akihito
Author Heading: 滝澤, 直人
岡田, 典秋
岩崎, 昭人
TAKIZAWA, Naoto
OKADA, Noriaki
IWASAKI, Akihito
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1985-08
Publication Date (W3CDTF): 1985-08
Alternative Title: Wind-tunnel Investigation of the Pressure Distribution and Deduced Characteristics of Semi-Circular Cylinder in the Vicinity of Critical Reynolds Number
Periodical title: 航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-871
No. or year of volume/issue: 871
Volume: 871
Pages: 18-
ISSN (Periodical Title): ISSN : 0389-4010
Text Language Code: jpn
Target Audience: 一般
Note (General): Two-dimensional semi-circular cylinders have been tested over a Reynolds number range from 67,000 to 600,000 and over angles of attack of ±90deg, to measure pressure distributions and to deduce forces, stagnation, separation and other characteristics. Tests were conducted in the NAL instrument wind-tunnel, the NAL gust wind-tunnel and the Fuji Heavy Industries fume wind-tunnel. The wind-tunnel-boundary correction was specialized by the concept of effective model-height and wake-width. Below an angle of attack of 40deg, pressure distributions about the upper- and lower-surface were similar to the circular cylinder and the flat plate respectively and showed considerable difference between sub- and super-critical Reynolds number. The lift and drag coefficient range were -0.85 ～ 1.5, 0.4 ～ 2.28 at sub-critical and 0 ～ 2.02, 0.1 ～ 2.37 at super-critical. Features were as follows : Near -60deg, suction peak and lift coefficients were extraordinarily high at super-critical. Near 0deg, force coefficient curves, except the chord force, were concave. Near 25deg, lift coefficient showed a maximum value of 2.02 at super-critical Reynolds number. At 40deg ～ 50deg, upper suction double peak and negative chord force (but 5deg ～ 50deg at super-critical) were shown. At 60deg ～ 90deg, pressure distributions over the upper surface showed a low hat shape.
資料番号: NALTR0871000
レポート番号: NAL TR-871
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