A physical modeling of bottom frictional resistance on a hydraulic bore propagating in an open-channel

Hitoshi Miyamoto, Akira Kadota, Kouichi Morimoto

研究成果: Conference contribution

抄録

In this study, we analytically and experimentally investigated propagation characteristics of a hydraulic bore in a rough bed open-channel, and attempted to model the bed friction effect. Momentum conservation was used to derive an equation for the propagation velocity, in which both the frictional and gravitational forces were taken into account. A laboratory experiment was carried out to develop a bottom friction law applied to the bore propagation. The friction coefficient was obtained as an extension from that for a steady-state open-channel flow, and was set to be a function of the channel slope and the water level difference around the bore head. As the water level difference decreased and/or the slope increased, the coefficient became small and converged to the steady-state value in the limit. The results obtained in this paper indicated that the bottom friction effect was one of the important components to describe the bore propagation in an open-channel with a rough bed.

本文言語English
ホスト出版物のタイトル34th IAHR Congress 2011 - Balance and Uncertainty
ホスト出版物のサブタイトルWater in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering
出版社International Association for Hydro-Environment Engineering and Research (IAHR)
ページ3651-3658
ページ数8
ISBN(電子版)9780858258686
出版ステータスPublished - 2011
外部発表はい
イベント34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering - Brisbane, Australia
継続期間: 2011 6月 262011 7月 1

出版物シリーズ

名前34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering

Conference

Conference34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering
国/地域Australia
CityBrisbane
Period11/6/2611/7/1

ASJC Scopus subject areas

  • 工学(その他)
  • 水の科学と技術
  • 環境科学(その他)

フィンガープリント

「A physical modeling of bottom frictional resistance on a hydraulic bore propagating in an open-channel」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル