RESEARCH ARTICLE
Dissipation of Water Energy by Using a Special Stilling Basin Via Three-dimensional Numerical Model
Yasser El-Saie1, *, Osama Saleh2, Marihan El-Sayed3, Abdelazim Ali4, Eslam El-Tohamy Yasser Mohamed Sadek5
Article Information
Identifiers and Pagination:
Year: 2023Volume: 17
E-location ID: e187414952307110
Publisher ID: e187414952307110
DOI: 10.2174/18741495-v17-230804-2022-78
Article History:
Received Date: 02/12/2022Revision Received Date: 18/06/2023
Acceptance Date: 20/06/2023
Electronic publication date: 08/08/2023
Collection year: 2023
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Introduction:
The forced hydraulic jump characteristics were studied numerically using Flow-3D software. Rectangular and semi-cylindrical shape slices were used as obstacles with different arrangements in the stilling basin to dissipate the excess kinetic energy.
Methods:
Each shape type was tested under five values of discharges (60, 80, 100, 120, and 160 l s-1). The numerical results showed that the obstacles act as good energy dissipators, which decrease the hydraulic jump length and the length of the stilling basin as a result. The best case is installing three semi-cylindrical slices in the stilling basin, and energy dissipation ratios range from 48% to 63%, with an average difference of 14% from the values of classical hydraulic jumps, according to discharge values.
Results:
It should be noted that the semi-cylindrical slices have better performance on energy dissipation ratios than rectangular slices, which indicates concave surface models cause the flow to change its direction, and this leads to a stable hydraulic condition.
Conclusion:
Results of this work can be applied to a prototype by fixing three semi-cylindrical slices in the stilling basin at relative distances of 0.2, 0.5, and 0.8 from the end of the spillway, and this lead to maximize energy dissipation rates.
