Author(s): Joao G. A. B. Leal; Rui M. L. Ferreira; Antonio B. Franco; Antonio H. Cardoso
Linked Author(s): Rui M.L. Ferreira
Keywords: Dam-break; Wave front; Movable bed
Abstract: His paper presents the results of one experimental study focused on dam-break wave propagation over movable beds. Tests consisted in the sudden opening of a vertical lift-gate, which separated the initial water and sediments levels upstream and downstream of the gate. They allowed the simulation of the following initial conditions: with or without initial bed step at the gate crosssection; with or without water downstream of the gate; with or without sediments downstream of the gate. The results obtained are used to discuss the influence of the movable bed on the celerity of the wave fronts upstream and downstream of the gate, as well as on the depth of the downstream wave front; the total volume of dislodged sediments is also assessed.
Year: 2001