Abstract
Eutrophication in water supply reservoirs is a complex phenomenon involving many physico-chemical processes and, therefore, many parameters. Aeration has been confirmed as the best remedial and/or preventive action to minimize or totally eliminate its effects. However, a good understanding of the so-generated flow requires a modelling based on two-phase flow (water-air bubbles) leading to many difficulties. In a previous paper, a first simplified model was suggested; herein, we describe an alternative model taking into account the aeration effect through lumped two-phase flow correction. Numerical experiments are then performed and compared to the previously developed simulator.