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Article

Numerical Simulations of the Flow Field of a Submerged Hydraulic Jump over Triangular Macroroughnesses

1
Department of Civil Engineering, Faculty of Engineering, University of Zanjan, Zanjan 537138791, Iran
2
Department of Civil Engineering, University of Calabria, Arcavacata, 87036 Rende, Italy
3
Department of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh 8311155181, Iran
4
Department of Engineering, University of Palermo, Viale delle Scienze, 90128 Palermo, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Anis Younes
Water 2021, 13(5), 674; https://doi.org/10.3390/w13050674
Received: 22 January 2021 / Revised: 15 February 2021 / Accepted: 26 February 2021 / Published: 2 March 2021
(This article belongs to the Special Issue Hydraulic Dynamic Calculation and Simulation)
The submerged hydraulic jump is a sudden change from the supercritical to subcritical flow, specified by strong turbulence, air entrainment and energy loss. Despite recent studies, hydraulic jump characteristics in smooth and rough beds, the turbulence, the mean velocity and the flow patterns in the cavity region of a submerged hydraulic jump in the rough beds, especially in the case of triangular macroroughnesses, are not completely understood. The objective of this paper was to numerically investigate via the FLOW-3D model the effects of triangular macroroughnesses on the characteristics of submerged jump, including the longitudinal profile of streamlines, flow patterns in the cavity region, horizontal velocity profiles, streamwise velocity distribution, thickness of the inner layer, bed shear stress coefficient, Turbulent Kinetic Energy (TKE) and energy loss, in different macroroughness arrangements and various inlet Froude numbers (1.7 < Fr1 < 9.3). To verify the accuracy and reliability of the present numerical simulations, literature experimental data were considered. View Full-Text
Keywords: submerged hydraulic jump; triangular macroroughnesses; TKE; bed shear stress coefficient; velocity; FLOW-3D model submerged hydraulic jump; triangular macroroughnesses; TKE; bed shear stress coefficient; velocity; FLOW-3D model
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MDPI and ACS Style

Ghaderi, A.; Dasineh, M.; Aristodemo, F.; Aricò, C. Numerical Simulations of the Flow Field of a Submerged Hydraulic Jump over Triangular Macroroughnesses. Water 2021, 13, 674. https://doi.org/10.3390/w13050674

AMA Style

Ghaderi A, Dasineh M, Aristodemo F, Aricò C. Numerical Simulations of the Flow Field of a Submerged Hydraulic Jump over Triangular Macroroughnesses. Water. 2021; 13(5):674. https://doi.org/10.3390/w13050674

Chicago/Turabian Style

Ghaderi, Amir, Mehdi Dasineh, Francesco Aristodemo, and Costanza Aricò. 2021. "Numerical Simulations of the Flow Field of a Submerged Hydraulic Jump over Triangular Macroroughnesses" Water 13, no. 5: 674. https://doi.org/10.3390/w13050674

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