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Review

Review and Comparison of Numerical Simulations of Secondary Flow in River Confluences

1
Department of Civil Engineering, University of Ottawa, 75 Laurier Ave E, Ottawa, ON K1N 6N5, Canada
2
School of Water Resources Engineering, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Academic Editors: Giuseppe Pezzinga, Ahmad Shakibaeinia and Amir Reza Zarrati
Water 2021, 13(14), 1917; https://doi.org/10.3390/w13141917
Received: 10 May 2021 / Revised: 6 July 2021 / Accepted: 7 July 2021 / Published: 11 July 2021
(This article belongs to the Special Issue Computational Fluid Mechanics and Hydraulics)
River confluences are a common feature in natural water resources. The flow characteristics in confluences are complicated, especially at junction areas between tributaries and the main river. One of the typical characteristics of confluences is secondary flow, which plays an important role in mixing, velocity, sediment transport, and pollutant dispersion. In addition to the experimental and field studies that have been conducted in this area, the development of computational fluid dynamics has allowed researchers in this field to use different numerical models to simulate turbulence properties in rivers, especially secondary flows. Nowadays, the hydrodynamics of flows in confluences are widely simulated by using three-dimensional models in order to fully capture the flow structures, as the flow characteristics are considered to be turbulent and three-dimensional at river junctions. Several numerical models have been recommended for this purpose, and various turbulence models have been used to simulate the flows at confluences. To assess the accuracy of turbulence models, flows have been predicted by applying different turbulence models in the numerical model and the results have been compared with other data, such as field, laboratory, and experimental data. The purpose behind these investigations was to find the suitable model for each case of turbulent flow and for different types of confluences. In this study, the performances of turbulence models for confluences are reviewed for different numerical simulation strategies. View Full-Text
Keywords: river confluences; secondary flow; numerical model; flow field river confluences; secondary flow; numerical model; flow field
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MDPI and ACS Style

Shaheed, R.; Yan, X.; Mohammadian, A. Review and Comparison of Numerical Simulations of Secondary Flow in River Confluences. Water 2021, 13, 1917. https://doi.org/10.3390/w13141917

AMA Style

Shaheed R, Yan X, Mohammadian A. Review and Comparison of Numerical Simulations of Secondary Flow in River Confluences. Water. 2021; 13(14):1917. https://doi.org/10.3390/w13141917

Chicago/Turabian Style

Shaheed, Rawaa, Xiaohui Yan, and Abdolmajid Mohammadian. 2021. "Review and Comparison of Numerical Simulations of Secondary Flow in River Confluences" Water 13, no. 14: 1917. https://doi.org/10.3390/w13141917

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