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Article

3-D Numerical Study of a Bottom Ramp Fish Passage Using Smoothed Particle Hydrodynamics

1
Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia
2
Environmental Physics Laboratory (EPhysLab), CIM-UVIGO, Universidade de Vigo, 32004 Ourense, Spain
3
School of Applied Engineering and Technology, New Jersey Institute of Technology, Newark, NJ 07102, USA
4
Norwegian Institute for Nature Research, NO-7485 Trondheim, Norway
5
Institute for Ichthyological and Ecological Research, 1233 Dob, Slovenia
*
Author to whom correspondence should be addressed.
Academic Editor: Georg Umgiesser
Water 2021, 13(11), 1595; https://doi.org/10.3390/w13111595
Received: 5 May 2021 / Revised: 28 May 2021 / Accepted: 3 June 2021 / Published: 5 June 2021
(This article belongs to the Special Issue Ecohydraulics Modeling and Simulation)
Worldwide, the overwhelming number of man-made barriers in fluvial systems has been identified as one of the major causes of the reported staggering average declines of migratory fish. Fish passages have been shown to help mitigate such problems. Close-to-nature types of fish passages, such as bottom ramps, bypass channels, and fish ramps can be used to minimize the impact of artificial steep drops (e.g., weirs) on the migration of aquatic fauna, especially in cases of low-head barriers. This study focuses on the characterization of the flow pattern in a bottom ramp. A 3-D numerical model based on the meshless smoothed particle hydrodynamics (SPH) method was successfully validated and then employed for the simulation of turbulent free-surface flow in a straight channel with complex geometry. The effects of bed roughness, channel slope, and flow rate were quantified in terms of flow depth, velocity fields, and area‒velocity ratios. During the study, several new tools were developed, leading to new functionalities in pre-processing, solver, and post-processing which increase the applicability of DualSPHysics in the field of eco-hydraulics. View Full-Text
Keywords: fish passages; bottom ramp; smoothed particle hydrodynamics; DualSPHysics; fish migration fish passages; bottom ramp; smoothed particle hydrodynamics; DualSPHysics; fish migration
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MDPI and ACS Style

Novak, G.; Domínguez, J.M.; Tafuni, A.; Silva, A.T.; Pengal, P.; Četina, M.; Žagar, D. 3-D Numerical Study of a Bottom Ramp Fish Passage Using Smoothed Particle Hydrodynamics. Water 2021, 13, 1595. https://doi.org/10.3390/w13111595

AMA Style

Novak G, Domínguez JM, Tafuni A, Silva AT, Pengal P, Četina M, Žagar D. 3-D Numerical Study of a Bottom Ramp Fish Passage Using Smoothed Particle Hydrodynamics. Water. 2021; 13(11):1595. https://doi.org/10.3390/w13111595

Chicago/Turabian Style

Novak, Gorazd, José M. Domínguez, Angelo Tafuni, Ana T. Silva, Polona Pengal, Matjaž Četina, and Dušan Žagar. 2021. "3-D Numerical Study of a Bottom Ramp Fish Passage Using Smoothed Particle Hydrodynamics" Water 13, no. 11: 1595. https://doi.org/10.3390/w13111595

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