Conception des avant-ports d’écluses : modélisation physique et numérique des écoulements au droit des môles ajourés

Details

Supervisors

Bousmar, Didier

Faculty

Ecole polytechnique de Louvain

Degree label

Master [120] : ingénieur civil des constructions

Abstract

enA holding basin of a lock is an infrastructure that provides good navigational conditions for the vessels that will use it. When a lock is adjacent to a draining canal, such as a river with a dam, more or less important cross currents appear at the entrance of the guard wall. In order to contain these currents, special attention must be paid to the guard wall and in particular to its openwork part. At the same time, studies carried out by the Hydraulic Research Department of the SPW on the development of new holding basins have highlighted the link between the fraction of the river intercepted by the holding basin and the importance of cross currents. This work studies the influence of the fraction of the river intercepted by the holding basin and the permeability of the guard wall on the currents present in the holding basin. A range of these two parameters was studied in an idealized model with the characteristics of the Walloon holding basins. This work proposes to study the currents present in the holding basin in two ways. First of all, with an experimental modelling on a reduced model. Then, in a second step, with a numerical simulation with the Telemac2D software. The results of this study confirm the influence of the fraction of the river intercepted by the holding basin on the cross currents. They also highlight the existence of optimal permeability as a function of the fraction of river intercepted, making it possible to reduce the impact of cross currents on navigation.