ID | 112201 |
著者 |
Moncho-Esteve, Ignacio J.
Universitat Politècnica de València
Palau-Salvador, Guillermo
Universitat Politècnica de València
García-Villalba, Manuel
Universidad Carlos III de Madrid
Shiono, Koji
Loughborough University
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キーワード | Turbulence
Flow structure
Large eddy simulation
Meander
Flooding
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資料タイプ |
学術雑誌論文
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抄録 | In this study, we report large eddy simulations of turbulent flow in a periodic compound meandering channel for three different depth conditions: one in-bank and two overbank conditions. The flow configuration corresponds to the experiments of Shiono and Muto (1998). The predicted mean streamwise velocities, mean secondary motions, velocity fluctuations, turbulent kinetic energy as well as mean flood flow angle to meandering channel are in good agreement with the experimental measurements. We have analyzed the flow structure as a function of the inundation level, with particular emphasis on the development of the secondary motions due to the interaction between the main channel and the floodplain flow. Bed shear stresses have been also estimated in the simulations. Floodplain flow has a significant impact on the flow structure leading to significantly different bed shear stress patterns within the main meandering channel. The implications of these results for natural compound meandering channels are also discussed.
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掲載誌名 |
Advances in Water Resources
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ISSN | 03091708
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cat書誌ID | AA00045525
AA11522386
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出版者 | Elsevier
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巻 | 116
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開始ページ | 95
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終了ページ | 116
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発行日 | 2018-03-21
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権利情報 | © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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言語 |
eng
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著者版フラグ |
著者版
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部局 |
理工学系
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