越流型水制の周りにおける流速分布 : 現地観測と数値シミュレーション
河川技術に関する論文集 Volume 6
Page 291-296
published_at 2000-06
アクセス数 : 856 件
ダウンロード数 : 120 件
今月のアクセス数 : 0 件
今月のダウンロード数 : 0 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00016618
File |
kasengijutsu_6_291.pdf
765 KB
種類 :
fulltext
|
Title ( jpn ) |
越流型水制の周りにおける流速分布 : 現地観測と数値シミュレーション
|
Title ( eng ) |
Velocity distribution around submerged spur dikes : field observation and numerical simulation
|
Creator |
Aoki Masakazu
Yoshimura Makoto
Tamai Nobuyuki
Ishikawa Yutaka
Yasuda Minoru
|
Source Title |
河川技術に関する論文集
|
Volume | 6 |
Start Page | 291 |
End Page | 296 |
Abstract |
At meander concave bank, Spur dike is appropriate for protecting bank from erosion and control bed topography. But the flow around spur dike are occur transverse component of spiral current. The meander zone is expanded to overcome the frictional resistance of the channel boundary in case during floods. So, without designing spur dike by more carefully using detail survey, numerical simulation and laboratory experimentation test, the scour and deposition of sediment occur a undefined and unexpected place by the stream flow variations caused by flood. Numerical simulation a two-layer model was developed as the extension of the two-dimensional flow model could get good result, comparing with field measurement distributions of velocity around spur dikes in Ushizu River, Saga Prefecture Kyushu region. The field observation continued from 1994 to 1996 covering the pre-and past-construction periods of the spur dikes. The characteristics of physical current at low and high water have been studied through field measurement and numerical simulation using two dimensional flow models. At result of spiral current, primary and intermittent vortex deflected current could define by numerical simulation. This basic equations are constructed by the finite element method to be appropriate for complicated topography like around spur dikes.
|
Keywords |
Spur dike
spiral current
primary and intermittent vortex
two-dimensional flow model
two-layer model
finite element method
|
NDC |
Construction. Civil engineering [ 510 ]
|
Language |
jpn
|
Resource Type | journal article |
Publisher |
土木学会
|
Date of Issued | 2000-06 |
Publish Type | Version of Record |
Access Rights | open access |