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Two-dimensional free surface flow numerical model for vertical slot fishways

Chorda, Jacques and Maubourguet, Marie-Madeleine and Roux, Hélène and Larinier, Michel and Tarrade, Laurent and David, Laurent Two-dimensional free surface flow numerical model for vertical slot fishways. (2010) Journal of Hydraulic Research, 48 (2). 141-151. ISSN 1814-2079

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Official URL: http://dx.doi.org/10.1080/00221681003703956

Abstract

Numerical results of a vertical slot fishway study are presented. The Saint-Venant equations are solved using TELEMAC-2D. Turbulence modelling uses the classical two equations k-epsilon closure model. A comparison with velocity measurements performed at the Laboratoire d'Etudes Aerodynamiques of University of Poitiers, France, using particle image velocimetry and acoustic Doppler velocimetry permitted to validate numerical results. Turbulence modelling is required not only to have a fish-friendly flow but, more remarkably, by the fact that taking a constant eddy viscosity model gives incorrect mean flow patterns. Three longitudinal slopes were tested. The validity of the k-epsilon closure model is discussed. Special attention was paid to the calculated turbulent kinetic energy and the energy dissipation rate. This last parameter is of great interest because its spatial distribution significantly affects the progress relative to fish passage efficiency.

Item Type:Article
Additional Information:Thanks to Taylor & Francis. The original publication is available at http://www.tandfonline.com
HAL Id:hal-00948973
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Mécanique et d'Aérotechnique - ENSMA (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Poitiers (FRANCE)
Laboratory name:
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Deposited By: Jacques CHORDA
Deposited On:18 Feb 2014 17:44

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