Flow Characteristics of Skimming Flows in Stepped Channels

DOI Web Site 被引用文献12件
  • I. Ohtsu
    Professor, Dept. of Civil Engineering, Nihon Univ., College of Science and Technology, Kanda Surugadai, 1-8-14 Chiyoda-ku, Tokyo 101-8308, Japan.
  • Y. Yasuda
    Associate Professor, Dept. of Civil Engineering, Nihon Univ., College of Science and Technology, Tokyo 101-8308, Japan.
  • M. Takahashi
    Research Associate, Dept. of Civil Engineering, Nihon Univ., College of Science and Technology, Tokyo 101-8308, Japan.

書誌事項

公開日
2004-09
DOI
  • 10.1061/(asce)0733-9429(2004)130:9(860)
公開者
American Society of Civil Engineers (ASCE)

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説明

Ohtsu et al. must be congratulated for their systematic study of skimming flows on stepped channels with different slopes and step heights. Their experimental data provide a solid database that might lead to better and improved design criteria. Important outcomes include some estimate of friction factors for skimming flows and a design flow chart for stepped canals. Despite these outstanding results, the writers would like to comment constructively on further design criteria for skimming flows, and to provide additional flow resistance results and a discussion on the physical processes. It is hoped that the present contribution will add to safer stepped chute design. The writers would like to point out that the energy dissipation performances of stepped canals with moderate slopes are far from being totally understood and further experimental research is needed.

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