´¡²ú²õ³Ù°ù²¹³¦³Ù:ÌýProtecting urban and industrial areas located near the coast from the risk of wave-induced flooding during storms is a major challenge, particularly for EDF, which operates several nuclear power stations on the coast or in estuaries. For that purpose, coastal defences such as breakwaters are built and designed based on admissible average wave overtopping discharges over the protection in given storm conditions. The goal of my PhD thesis* was to develop a phase-resolving numerical model able to simulate nearshore wave propagation from offshore to the coast, as well as their interaction with coastal protections, in particular wave run-up and overtopping processes. The developed model, named galatea_GN, solves the depth-averaged enhanced Serre-Green-Naghdi (eSGN) equations of Bonneton et al. (2011), both in one and two horizontal dimensions. Depth-induced wave breaking is modelled with an eddy-viscosity approach which relies on a one-equation turbulence model for the turbulent kinetic energy. Special attention was devoted to developing a numerical implementation strategy and using accurate and efficient numerical methods, able to capture dry fronts which repeatedly occur during run-up and overtopping. The numerical model will be presented, as well as several experimental validation cases, and its application to reproduce laboratory experiments of irregular wave overtopping, both in one and two horizontal dimensions.
Bio:I conducted my PhD thesis at the R&D division of EDF, the French national electricity producer, and the Saint-Venant Hydraulics Laboratory (LHSV), in Chatou, Paris area. I developed a phase-resolving numerical model for the simulation of nearshore wave propagation and wave overtopping of coastal protections. I defended my PhD thesis last November, and I now work at EDF R&D as a research engineer. I contribute to the MOISE-2 project, whose aim is to evaluate and strengthen the resilience of existing and future nuclear power plants against external coastal and fluvial flooding hazards. I am also involved in the development of the openTELEMAC modelling system, developed at EDF.