The consequences of global warming and the climate change are becoming more and more pronounced during the last decade. These consequences include rising of the sea-level and a higher risk for extreme climate incidents, like storms, that consequently lead to coastal erosion. Given the high population densities and the high economic and environmental importance of coastal areas, the consequences of the sea-level rise will have a huge impact on the society. In that sense, coastal engineers have a very crucial role in developing sustainable coastal areas as well as designing robust coastal defense systems for the next century. Therefore it is vital to accurately model the behavior of such coastal defense systems in a cost efficient way. In the here proposed research, this will be achieved by employing a non-hydrostatic model as the basis of a numerical platform which will be able to accurately account for physical processes that are crucial for erosion of coastal areas; i.e. cross-shore and long-shore sediment transport and the resulting morphological evolution. The main objectives of the proposed research aim to cover important knowledge gaps and to pave the way for new research for effective coastal protection. Results' valorisation will be achieved through scientific dissemination and cooperation with academic and industrial partners from the coastal engineering sector who have direct interest in the outcome of this fundamental research project.