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- Title
Development of Dam-Break Model Considering Real Case Studies with Asymmetric Reservoirs.
- Authors
Ferdowsi, A.; Nemati, M.; Farzin, S.
- Abstract
Dam-break flow is known as one of the most horrible phenomena. Some hypothetical reservoir geometries were evaluated in literature, but in nature, each reservoir has a unique geometry. In the present research, dam-break flow was studied based on different reservoir geometries using FLOW-3D. Six reservoirs were considered: reservoirs R1 and R2 belonged to Mahabad Dam (Iran) and Tignes Dam (France), with asymmetric reservoirs, respectively; reservoirs R3 and R4 had symmetrical trapezoidal reservoirs with angles 30 and 45 degrees, respectively; reservoir R5 had a rectangular shape, extending from one side; and reservoir R6 had a long reservoir, which also was used to verify FLOW-3D. The model performance was verified by experimental results and FLUENT model in literature. Results showed FLOW-3D with mesh sizes 30x30x30 mm and k-ε turbulence model outperformed FLUENT, based on R2, RMSE, and MAE. The results of water levels and flow velocities at five points proved that dam-break flow could vary from one dam to another, considering reservoir geometry. Peak water levels and velocities have been measured to show how reservoir geometry could cause catastrophic flow.
- Subjects
COMPUTATIONAL fluid dynamics; RESERVOIRS; DAM models; HYDRAULICS; FLOOD damage
- Publication
Computational Engineering & Physical Modeling, 2021, Vol 4, Issue 4, p39
- ISSN
2588-6959
- Publication type
Article
- DOI
10.22115/CEPM.2021.311759.1188