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  1. 060 工学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

チャネル内乱流伝熱の3次元性に関する研究(条件付きサンプル法による組織構造の抽出)

http://hdl.handle.net/10191/5764
http://hdl.handle.net/10191/5764
86a5efc0-298f-4679-bc99-ea379e596205
名前 / ファイル ライセンス アクション
9_0062.pdf 9_0062.pdf (2.0 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2008-04-08
タイトル
タイトル チャネル内乱流伝熱の3次元性に関する研究(条件付きサンプル法による組織構造の抽出)
タイトル
言語 en
タイトル チャネル内乱流伝熱の3次元性に関する研究(条件付きサンプル法による組織構造の抽出)
言語
言語 jpn
キーワード
主題Scheme Other
主題 Turbulent Channel Flow
キーワード
主題Scheme Other
主題 Spanwise Heat Transfer
キーワード
主題Scheme Other
主題 Coherent Structure
キーワード
主題Scheme Other
主題 Quasi-Streamwise Vortex
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
その他のタイトル
その他のタイトル A Study on Three-Dimensionality of Turbulent Heat Transfer in a Channel : (Eduction of Coherent Structures by a Conditional Sampling Technique)
著者 松原, 幸治

× 松原, 幸治

WEKO 44822

松原, 幸治

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小林, 睦夫

× 小林, 睦夫

WEKO 44823

小林, 睦夫

Search repository
坂井, 隆浩

× 坂井, 隆浩

WEKO 44824

坂井, 隆浩

Search repository
須藤, 仁

× 須藤, 仁

WEKO 44825

須藤, 仁

Search repository
著者別名
識別子 44826
識別子Scheme WEKO
姓名 Matsubara, Koji
著者別名
識別子 44827
識別子Scheme WEKO
姓名 Kobayashi, Mutsuo
著者別名
識別子 44828
識別子Scheme WEKO
姓名 Sakai, Takahiro
著者別名
識別子 44829
識別子Scheme WEKO
姓名 Suto, Hitoshi
抄録
内容記述タイプ Abstract
内容記述 Coherent structures near the wall (y^+<60)in a turbulent channel flow were educed by a conditional sampling technique from the DNS data for two kinds of temperature fields : (a) the uniform heat flux assigned on the two walls (UHF) and (b) the constant spanwise mean temperature gradient imposed on the working fluid (STG). Attention was paid for roles of the quasi-streamwise vortex in heat transfer mechanisms. Flow and temperature fields around the quasi-streamwise vortex have basically two-dimensional structure. In the case of UHF, temperature fluctuation is high at right-and left-sides of the vortex core where the rotating flow motion due to the vortex has a wallnormal component. In STG, large value of the temperature fluctuation was observed at the top-and bottom-sides of the vortical structure where flow in the spanwise direction is conspicuous. In both cases, gradients of the time-mean temperature and the temperature fluctuation in the same direction have opposite signs since excessive temperature is transported by the vortical flow motion in the azimuthal direction with respect to the vortex axis. Therefore, temperature distribution for UHF and that for STG have azimuthally phase difference of about 90 degree, and they are almost similar in shape. Destruction (correlation between pressure and temperature gradient) of wall-normal turbulent heat flux and that of spanwise component are based on similar mechanisms. They are caused by the rotating motion of the vortex by which, near the center axis of the vortex, pressure fluctuation takes negative value and the gradient of temperature fluctuation becomes inverted for that of the mean temperature.
書誌情報 日本機械学会論文集. B編
en : 日本機械学会論文集. B編

巻 66, 号 645, p. 1414-1421, 発行日 2000-05
出版者
出版者 日本機械学会
ISSN
収録物識別子タイプ ISSN
収録物識別子 03875016
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00187441
権利
権利情報 日本機械学会
権利
権利情報 本文データは学会の許諾に基づくCiNiiからの複製である
著者版フラグ
値 publisher
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/110002393082
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