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  1. 紀要論文
  2. 琉球大学工学部紀要
  3. 19号
  1. 部局別インデックス
  2. 工学部

特殊な間隙を有する長方形板の空力特性について

http://hdl.handle.net/20.500.12000/12127
http://hdl.handle.net/20.500.12000/12127
cac6a269-594b-413d-8b36-cf052e47b7e8
名前 / ファイル ライセンス アクション
No19p1.pdf No19p1.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2009-08-27
タイトル
タイトル 特殊な間隙を有する長方形板の空力特性について
言語 ja
作成者 永井, 實

× 永井, 實

ja 永井, 實

佐久川, 恵博

× 佐久川, 恵博

ja 佐久川, 恵博

Nagai, Minoru

× Nagai, Minoru

en Nagai, Minoru

Sakugawa, Keihaku

× Sakugawa, Keihaku

en Sakugawa, Keihaku

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 Flat plate standing perpendicularly in the wind receives large drag because of the flow separation from the plate edge and the following large eddy region. This eddy region, called wake, is affected by the boundary condition around the plate, and then affects the drag force. In this study, the aerodynamic characteristics of the rectangular flat plate with a special opening were experimentally investigated at the various boundary conditions. The model plate was manufactured as a sliding shutter by the company O and the company K. The opening ratio of the plate is about 18 percent. According to the experiment, the drag coefficient of the specimen did not vary from the same plate but without the opening. Drag coefficient in the case of no boundary, specimen in the uniform flow, is 1.19, which is somewhat higher than the value 1.12 of the thin rectangular flat plate. The difference is seemed to be caused by the thickness and the edge shape of the plate. In the worst boundary condition, the flat plate placed on the center of the large wall, the drag coefficient reachs to 1.59, which is 34 percent larger than the value in the case of no boundary. However, if a kind of wind shutter is placed behind the model, the drag force acting to the model becomes almost negligible. Pressure oscillating phenomena are also researched, and it is tried to explain the frequency by the Kármán vortices and Helmholts resonance.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学工学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/12127
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0389-102X
収録物識別子タイプ NCID
収録物識別子 AN0025048X
収録物名
言語 ja
収録物名 琉球大学工学部紀要
書誌情報
号 19, p. 1-11
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