IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : Experiments and simulations of dam break over fixed and granular beds.
Experiments and simulations of dam break over fixed and granular beds.
Author : S. Evangelista1, C. Di Cristo1 and G. de Marinis1
A dam-break on mobile bed constitutes a relevant example of unsteady process with a strong interaction between hydrodynamics and solid transport. For this reason, apart from the classical interest in preventing such dangerous events, the study of the propagation of dam-break waves has become in the last decades a standard benchmark for validating solid transport and hydrodynamic models. In the paper dam-break scenarios over fixed and movable beds, in the presence of a stepped bottom, are considered. In particular, selected literature data and some experimental tests performed in the Water Engineering Lab at University of Cassino (Italy) are compared against numerical results of a two-phase flow model, developed for sediment transport and bed evolution in unsteady conditions. The model is numerically solved using a Finite-Volume method with the first-order multistage centered-scheme GMUSTA. The comparisons prove a good agreement between the numerical prevision and the experimental data.
File Size : 290,412 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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