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7. On the Bottom Friction in an Oscillatory Current
https://doi.org/10.15083/0000033690
https://doi.org/10.15083/0000033690c4212446-a3b7-4f90-acab-801ff484d6cc
名前 / ファイル | ライセンス | アクション |
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ji0421007.pdf (1.1 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2008-05-30 | |||||
タイトル | ||||||
タイトル | 7. On the Bottom Friction in an Oscillatory Current | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15083/0000033690 | |||||
ID登録タイプ | JaLC | |||||
その他のタイトル | ||||||
その他のタイトル | 7. 時間的に変化する流れに伴なう水底摩擦 | |||||
著者 |
KAJIURA, Kinjiro
× KAJIURA, Kinjiro |
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著者別名 | ||||||
識別子 | 131598 | |||||
識別子Scheme | WEKO | |||||
姓名 | 梶浦, 欣二郎 | |||||
著者所属 | ||||||
著者所属 | Earthquake Research Institute | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The frictional coefficient C of an oscillating turbulent flow is estimated on the assumption that the eddy viscosity is proportional to the amplitude of the bottom friction velocity and the height above the bottom. The dependence of C on parameters such as the amplitude of the vertically averaged horizontal velocity, the period of the oscillation, the depth of water, and the roughness length z0(for the case of a rough boundary) or the molecular viscosity υ(for the case of a smooth boundary) is shown graphically by choosing suitable non-dimensional parameters. The frictional coefficient for the case of a laminar oscillatory flow is also discussed. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 渦動粘性係数を,水底摩擦速度と水底からの高さに比例すると仮定して摩擦係数を計算し,底面が粗および滑らかな場合のそれぞれについて,摩擦係数が流れの振幅,周期,水深に関してどう変るかを適当な無次元量をつかつて図示した.浅海の潮流については,摩擦係数はz0/z(z:水深,z0:粗度長さ)によつてきまり,z0/zのもつともらしい値に対して摩擦係数は2×10-3程度となるが,周期の短かいセイシュなどでは摩擦係数が大きくなる. | |||||
書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 42, 号 1, p. 147-174, 発行日 1964-05-30 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00408972 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00162258 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
日本十進分類法 | ||||||
主題 | 453 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | 東京大学地震研究所 | |||||
出版者別名 | ||||||
Earthquake Research Institute, University of Tokyo |