Influence of directional wave spreading on a WEC device

Wave Energy Converter (WEC) performance is generally sensitive to the wave direction. So, it important include effect of multi-directional waves in numerical modelling. A realistic representation ocean should account for height and directional spreading parameters specific WEC deployment location. high quality generalised distribution dependent on direction frequency. Here we compare power produced, field, motion WaveSub device different frequency-directional cases. Directional has been modelled using model distributions such as uniform cosine fourth, Mitsuyasu, Hasselman Donelan-Banner. The hydrodynamic coefficients are computed all directions Nemoh. Then, WEC-Sim code extended add capability simulate user selected spreading. excitation force applied each body updated spectrum. Results show that produced 10-20% lower than a single case. demonstrates introduction sway, roll, yaw simulations while resultant wavefield more compared non-directional Computational time significantly comparable CFD approaches this makes method particularly effective.