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Open AccessArticle

Modelling of Pool-Type Fishways Flows: Efficiency and Scale Effects Assessment

CERIS—Civil Engineering for Research and Innovation for Sustainability, Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa, Portugal
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Academic Editor: Bommanna Krishnappan
Water 2021, 13(6), 851; https://doi.org/10.3390/w13060851
Received: 16 January 2021 / Revised: 8 March 2021 / Accepted: 18 March 2021 / Published: 20 March 2021
(This article belongs to the Special Issue Ecohydraulics of Pool-Type Fishways)
In this study, the 3D numerical modelling of flow in a pool-type fishway with bottom orifices was performed using computational fluid dynamics (CFD) software (FLOW-3D®). Numerical results were compared with experimental data obtained from acoustic Doppler velocimetry (ADV) and particle image velocimetry (PIV) measurements. Several hydrodynamic variables that influence fishways efficiencies, such as flow depths, flow patterns, water velocity, turbulent kinetic energy, Reynolds normal stresses, and Reynolds shear stress parallel to the bottom component, were qualitatively and quantitatively compared. The numerical model accurately reproduced the complex flow field, showing an overall good agreement between the numerical model predictions and the experimental data for the analysed variables. The importance of performing a numerical model validation for all the parameters under analyses was highlighted. Additionally, scaling effects were analysed by running an upscaled numerical model of the prototype fishway. The model performed with similar accuracy for both physical model and prototype dimensions with no evidence of scale effects. The present study concludes that CFD models (namely FLOW-3D®) may be used as an adequate and efficient design and analysis tool for new pool-type fishways geometries, reducing and complementing physical model testing. View Full-Text
Keywords: pool-type fishways; 3D numerical modelling; LES; scale effects; flow patterns; CFD model assessment pool-type fishways; 3D numerical modelling; LES; scale effects; flow patterns; CFD model assessment
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MDPI and ACS Style

Quaresma, A.L.; Pinheiro, A.N. Modelling of Pool-Type Fishways Flows: Efficiency and Scale Effects Assessment. Water 2021, 13, 851. https://doi.org/10.3390/w13060851

AMA Style

Quaresma AL, Pinheiro AN. Modelling of Pool-Type Fishways Flows: Efficiency and Scale Effects Assessment. Water. 2021; 13(6):851. https://doi.org/10.3390/w13060851

Chicago/Turabian Style

Quaresma, Ana L.; Pinheiro, António N. 2021. "Modelling of Pool-Type Fishways Flows: Efficiency and Scale Effects Assessment" Water 13, no. 6: 851. https://doi.org/10.3390/w13060851

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