Numerical modelling of the hydrodynamics around the farm of Wave Activated Bodies (WAB)

The aim of this research is to develop a numerical modelling approach able to provide design criteria for the optimization of the layout of a farm of Wave Energy Converters (WECs). The numerical model MIKE 21BW is calibrated against the experimental results obtained in Aalborg wave tank for a farm of floating WECs. The WECs under exam belong to the Wave Activated Body type. The calibrated model allows to tests more configurations at lower cost than physical models. Specifically, different mutual distance among the devices and their mutual alignment are examined to maximise the density of the devices and the distribution of residual wave energy and therefore energy production. Simulated and measured wave heights recorded by the many wave gauges placed in the basin are compared, as well as wave transmission and reflection induced by the devices. A sensitivity analysis, i.e. the identification of the key model parameters to be tuned in order to optimise the comparison, is also carried out.