Numerical comparison of shallow water models in multiply connected open channel networks

• Yoshioka Hidekazu

  Faculty of Life and Environmental Science, Shimane University

• Unami Koichi

  Graduate School of Agriculture, Kyoto-University

• Fujihara Masayuki

  Graduate School of Agriculture, Kyoto-University

抄録

Shallow water flows in multiply connected open channel network are frequently encountered in hydro-environmental problems. Simulating such flows practically reduces to solving the 1-D shallow water equations (1-D SWEs) in locally 1-D open channel networks. A key in solving the 1-D SWEs is physically consistent numerical treatment of junctions and bends, which has not been discussed in depth in the conventional researches. This paper performs numerical comparisons of shallow water models with different internal boundary conditions (IBCs) at junctions and bends, focusing on their applications to real problems. The computational results show significant impacts of the IBCs on the simulated hydraulic processes, such as flow transition, flood arrival time, and peak discharge.

収録刊行物

• 日本シミュレーション学会英文誌

  日本シミュレーション学会英文誌 2 (2), 271-291, 2015

  一般社団法人 日本シミュレーション学会

キーワード

• Surface water flows
• Multiply connected open channel networks
• Shallow water equations
• Junctions
• Bends
• Internal boundary conditions

詳細情報

• CRID: 1390001205755959552
• NII論文ID: 130005108388
• DOI: 10.15748/jasse.2.271
• ISSN: 21885303
• Web Site: https://www.jstage.jst.go.jp/article/jasse/2/2/2_271/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可