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- 岩崎 理樹
- University of Illinois, Urbana-Champaign
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- PARKER Gary
- University of Illinois, Urbana-Champaign
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- 清水 康行
- 北海道大学工学研究科
書誌事項
- タイトル別名
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- NUMERICAL SIMULATION OF TRACER ADVECTION-DIFFUSION UNDER THE INFLUENCE OF FREE BARS
抄録
This paper presents numerical simulations of tracer particle transport both in the absence and presence of free bars. The transport and diffusion of tracer particles is affected by both the probabilistic motion of sediment particles and by the river bed geometry associated with free bars. We compare results of numerical models using an equilibrium (flux-based model) and a non-equilibrium (entrainment-based model) conservation formulation for river bed variation associated with bedload transport. The results show that 1) the entrainment-based morphodynamic model successfully reproduces free bar formation, 2) the flux-based morphodynamic model fails to simulate tracer diffusion in the absence of bars, and 3) free bar formation enhances streamwise tracer diffusion.
収録刊行物
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- 土木学会論文集B1(水工学)
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土木学会論文集B1(水工学) 71 (4), I_877-I_882, 2015
公益社団法人 土木学会
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詳細情報 詳細情報について
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- CRID
- 1390282680328888832
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- NII論文ID
- 130005123510
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- ISSN
- 2185467X
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可