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フルテキストURL2007020194.pdf ( 651.3KB ) 公開日 2010-04-16
タイトルManagement of two-dimensional channel flow with a pair of streamwise vortices : Behavior of streamwise vortices and mean velocity field
作成者Mochizuki, Shinsuke
Kameda, Takatsugu
Yoneda, Hirotaka
Osaka, Hideo
作成者ヨミモチズキ, シンスケ
カメダ, タカツグ
ヨネダ, ヒロタカ
オオサカ, ヒデオ
作成者別表記望月, 信介
亀田, 孝嗣
大坂, 英雄
作成者所属山口大学大学院理工学研究科(工学)
内容記述(抄録等)An experimental study was conducted to examine the management of a two-dimensional turbulent channel flow with a pair of streamwise vortices. A common-flow down type streamwise vortex pair, generated by a pair of half-delta wings mounted on the wall, was introduced into a fully developed turbulent channel flow. The half-delta wings were as high as the inner layer thickness of the channel flow. The mean velocity and Reynolds shear stress distributions were measured and various properties were obtained in order to find meanings of the vortex generator for management of the turbulent channel flow. The convective motion of the secondary current is responsible for most of the streamwise momentum transfer toward the wall in the interaction between the vortices and the shear layer. In the velocity profile averaged over the spanwise extent, the velocity is accelerated below the vortex center and decelerated above the vortex center. Deformation of the mean velocity profile remained at the remarkable downstream distance of 250 times the wing height, which corresponds to 50 times channel the half-width H.
本文言語eng
著者キーワードturbulent flow
flow control
secondary current
channel flow
vortex generator
資料タイプtext
ファイル形式application/pdf
出版者The Japan Society of Mechanical Engineers
出版者ヨミニホン キカイ ガッカイ
NII資料タイプ学術雑誌論文
査読の有無査読あり
ISSN1880-5558
掲載誌名Journal of Fluid Science and Technology
2
3
開始ページ592
終了ページ600
発行日2007
DOIinfo:doi/10.1299/jfst.2.592
関連情報URL(IsPartOf)http://www.jstage.jst.go.jp/browse/jfst
著者版/出版社版出版社版
備考Japanese original: Trans. Jpn. Soc. Mech. Eng.., Vol.72, No.724, B(2006), pp.2955-2961
リポジトリID2007020194
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2007020194