STUDY ON FLOW OVER FLEXIBLE VEGETATION-COVERED BED

• Tsujimoto Tetsuro

  JAPAN SOCIETY OF CIVIL ENGINEERS

• Kitamura Tadanori

  JAPAN SOCIETY OF CIVIL ENGINEERS University of Mississippi

Bibliographic Information

Other Title

• 柔軟な植生粗度を伴う流れに関する研究
• ジュウナン ナ ショクセイソド オ トモナウ ナガレ ニ カンスル ケンキュウ

Abstract

Flow over flexible vegetation-covered bed was investigated by the flume experiment and the numerical analysis. The experimental results showed that deformation of plants reduces flow resistance and waving motion of plants increases flow resistance. The numerical model of which a k-ε turbulence model is coupled by a model of deformation of plants explanied the reduction of the flow resistance caused by the deformation of plants. The model also clarified the relationship between flow condition and quantity of deformation. The waving motion causes hetrogenety of vegetation layer and it brings an additional momentum transfer. It is supposed that the additinal momentum transfer is the causes of the increase of flow resistance. Finally, flow resistance and shear stress acting on a bed in some kinds of flood plain vegetation was estimated.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 1998 (607), 29-44, 1998-11-21

  Japan Society of Civil Engineers

Keywords

• vegetation
• flexible roughness
• hydraulic resistance
• deformation
• waving
• k-ε model

Details

• CRID: 1390001205309847936
• NII Article ID: 130003983109
• NII Article ID: 10003276346
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.1998.607_29
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 4613396
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4613396
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1998/607/1998_607_29/_pdf
• Data Source:
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  • CiNii Articles
• Abstract License Flag: Disallowed