Abstract
The optimization of spillways in dams is very important, especially in the current conditions of climate change and the occurrence of extreme events. Our objective is to study the flow behavior in fanned spillway, which is complicated because shock waves are present, vibrations and high order of turbulence. The hydraulic structure can be damaged by these transverse waves, increase the cost and time of construction. The purpose of this paper is to examine the water surface distribution, the flow patterns in these structures to have a better understanding of the hydraulic difficulties and to test several alternatives for a better performance of the spillway.
Theoretical, empirical and numerical approaches were used. RNG k- ε model of turbulence based on the Volume of fluid method was chosen. Also, in order.
The numerical results obtained with Flow 3D hydro were validated for reliability and accuracy through theoretical calculations. Furthermore, a comparison was made among the measured data, theoretical calculations, and numerical outcomes.
At last, an optimal bottom slope and an optimized arc crested weir were chosen.
The outcomes of the physical measurements and numerical methods show a reliable consistency and robust correspondence; therefore, the numerical model assumes a vital role in facilitating the study, optimization, and support of decision-makers in making dependable and accurate choices.
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Souli, H., Ahattab, J., Agoumi, A. (2023). Hydraulic Study of Fan Spillway Using Computational Fluid Dynamics (CFD) and Experimental Approaches. In: Baba, K., Ouadif, L., Nounah, A., Bouassida, M. (eds) Advances in Research in Geosciences, Geotechnical Engineering, and Environmental Science. GeoME 2023. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-49345-4_42
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