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Modelling nature-like fishway flow around unsubmerged obstacles using a 2D shallow water model

Tran, Tien Dung and Chorda, Jacques and Laurens, Pascale and Cassan, Ludovic Modelling nature-like fishway flow around unsubmerged obstacles using a 2D shallow water model. (2016) Environmental Fluid Mechanics, 16 (2). 413-428. ISSN 1567-7419

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Official URL: http://dx.doi.org/10.1007/s10652-015-9430-3

Abstract

n the scope to create efficient nature like fish ramps using large-scale roughness elements, the present study is an audit of modelling such complex 3D free surface flows using an industrial 2D code solving shallow water equations. Validation procedure is based upon the comparison between numerous experimental measurements and numerical runs around large-scale roughness patterns disposed on the flume bottom in order to determine what 2D reliable numerical results can be expected. In this paper, we focused on cases of unsubmerged obstacles. The results demonstrate that 2D shallow water modelling using an industrial code such as TELEMAC-2D can be a convenient way for the hydraulic engineer to help design a nature-like fishway. This article emphasizes the limitations due to 2D depth integration of velocities and turbulence modelling and gives the domain of validity of the method.

Item Type:Article
Additional Information:Thanks to Springer Verlag editor. The definitive version is available at : http://link.springer.com/ The original PDF of the article can be found at : http://link.springer.com/article/10.1007%2Fs10652-015-9430-3
HAL Id:hal-01342925
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université des Sciences et des Technologies de Hanoi - USTH (VIETNAM)
Laboratory name:
Funders:
ONEMA
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Deposited On:07 Jul 2016 07:50

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