侵食性河床上におけるステップの発生に関する実験

• 島田 典和

  東北大学大学院工学研究科

• 泉 典洋

  東北大学大学院工学研究科

書誌事項

タイトル別名

• Experiments of the step formation on purely erosional beds

抄録

Steep channels with purely erosional beds are characterized by a series of steps formed on beds. In this paper, experiments were performed in order to study the formation and the evolution of the steps. In the experiments, the wavelength of steps were found to be of the order of ten to sixty times the initial flow depth before the formation of steps. It was observed that the wavelengths reduced over time. In order to investigate the inception of steps, a linear stability analysis is performed with the use of the spectral method with the Chebyshev polynomial. The experimental results were compared with the theoretical results derived from a linear stability analysis. The agreement between theory and experiments were found to be good.

収録刊行物

• 水工学論文集

  水工学論文集 48 967-972, 2004

  公益社団法人 土木学会

キーワード

• erosional steps
• purely erosional bed
• steep channel
• linear stability analisis

詳細情報

• CRID: 1390282680148838400
• NII論文ID: 130004043726
• DOI: 10.2208/prohe.48.967
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可