Gravity waves on water with non-uniform depth and current

A mathematical model for the combined refraction-diffraction of linear periodic gravity waves on water is developed, in which the influence of inhomogeneities of depth and current is taken into account. The model is used to compute partial reflection of waves a gully or an undersea slope, with influence of a current. The model is also applied to...

Liquefaction of Cohesive Sediments caused by Waves

Cross-shore Flow in Waves Beaking on a Beach

Behaviour of moored ships in harbours

Ports are more and more planned directly facing the ocean. Breakwaters are built to protect the berths against ocean waves. However, protection against long waves, mainly associated with wave groups at the ocean, is much more difficult. Calculations should be performed in the design stage of the port to verify whether the motions of the moored...

Stability of fishing vessels in waves and wind

Alongshore variability of nourished and natural beaches

Alongshore variability in topography (i.e. height differences in bed level along the coast) can exist on both natural and nourished beaches. An important question prior to implementation of a nourishment project is how alongshore variability is going to evolve and, related to this variability, the effect of the project upon swimmer safety. In...

The Singular Optics of Random Light: a 2D vectorial investigation

In this thesis, we explore the physics of optical singularities. We investigate them in light waves propagating randomly in a planar nanophotonic chip. With a custom-built nearfield microscope, we map the electromagnetic field resulting from the interference of these light waves. Our technique gives access to the full vectorial and complex...

Improving the Reliability of Tidal Turbine Generator Systems

Among different ways of harnessing tidal energy, tidal stream turbines are gaining popularity over traditional tidal dams. This is owing to the lower capital cost, and potentially lower ecological impact of tidal turbines. However, compared to more developed sources of energy, tidal energy remains expensive, which impedes its large-scale...