ABSTRACT
ABSTRACT: A promising solution to control overtopping and limit the risk of damage at the toe of an embankment dam may consist in dissipating a significant part of the flow energy along the chute by steps. However, flow over steps is highly aerated. In order to design the stepped linings, selfaeration process has to be accurately assessed for the whole flow regimes. With this aim, an experimental research was conducted at the Laboratory of Hydraulic Constructions (LCH-EPFL). The presented results allow to compare the measured air concentration profiles with existing theoretical and empirical models as well as to observe the influence of flow regimes on the self-aeration process.
1 INTRODUCTION
