Numerical Study for Negative Step Stilling Basin
Nassar, M., Abdelaal, G., Farahat, H., Tarbak, A., Ismail, A., Eltohamy, E. (2024). Numerical Study for Negative Step Stilling Basin. EKB Journal Management System, 45(1), 10-17. doi: 10.21608/eijest.2023.181128.1207
Mohammad Ahmad Nassar; Gamal Mohamed Mostafa Abdelaal; Hany Abdel Hamid Farahat; Abdelazim Mohamed Ali Tarbak; Ahmad Abdel Alim Mohammad Ismail; Eslam El-Sayed Mohamed Eltohamy. "Numerical Study for Negative Step Stilling Basin". EKB Journal Management System, 45, 1, 2024, 10-17. doi: 10.21608/eijest.2023.181128.1207
Nassar, M., Abdelaal, G., Farahat, H., Tarbak, A., Ismail, A., Eltohamy, E. (2024). 'Numerical Study for Negative Step Stilling Basin', EKB Journal Management System, 45(1), pp. 10-17. doi: 10.21608/eijest.2023.181128.1207
Nassar, M., Abdelaal, G., Farahat, H., Tarbak, A., Ismail, A., Eltohamy, E. Numerical Study for Negative Step Stilling Basin. EKB Journal Management System, 2024; 45(1): 10-17. doi: 10.21608/eijest.2023.181128.1207

Numerical Study for Negative Step Stilling Basin

The Egyptian International Journal of Engineering Sciences and Technology
Volume 45, Issue 1, March 2024, Page 10-17  XML PDF (941.09 K)
Document Type: Original Article
DOI: 10.21608/eijest.2023.181128.1207
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Authors
Mohammad Ahmad Nassar1; Gamal Mohamed Mostafa Abdelaal2; Hany Abdel Hamid Farahat3; Abdelazim Mohamed Ali Tarbak4; Ahmad Abdel Alim Mohammad Ismail email 1; Eslam El-Sayed Mohamed Eltohamyorcid 1
1Water and Water Structures Engineering Department Faculty of Engineering, Zagazig University, Zagazig, Egypt.
2Water and Water Structures Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt
3Water and Water Structures Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt.
4Professor of Hydraulics and Water Structures, National Center for Water Research, Egypt.
Abstract
The hydraulic jump is considered one of the most effective methods in dissipating energy through the stilling basin downstream of the control structures. The energy dissipation in the stilling basin contributes to protecting the area ‎downstream of the control structures from erosion. The aim of this study is to calibrate the Flow 3D program using published practical experiments by Willi H. Hager & Nicola V. Bretz (1986).‎ A three-dimensional numerical simulation was performed using the Flow 3D program to investigate the dissipation of energy due to hydraulic jump through stilling basins with negative steps and compare the results of the study with the results of the practical experiments in the research of Willi H. Hager & Nicola V. Bretz (1986).

It was clear from the comparison that the program has a high ability to simulate the phenomenon and to show results that are close to reality with an error not more than 10%.
Keywords
Hydraulic jump; Stilling basin; Flow-3D; Negative step
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