WEKO3
アイテム
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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/10191/576486a5efc0-298f-4679-bc99-ea379e596205
名前 / ファイル | ライセンス | アクション |
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9_0062.pdf (2.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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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× 小林, 睦夫× 坂井, 隆浩× 須藤, 仁 |
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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 |
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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 |