To overcome the many problems related to anchoring and site placement, a buoy that does not have to be fixed by taut anchoring lines is the ideal choice. This allows greater flexibility in choosing a site of deployment. The final design takes advantage of relative displacement between two buoys. The two buoys include a modified torus shaped “follower” buoy as well as a long cylindrical shaped “spar” buoy. The spar and follower buoys have different inertias, thus creating relative displacement as they move with each other. Through prototype testing, dry testing of the final design, and final testing in the wave tank, it was possible to determine that the buoy operates at a maximum efficiency of 1.88%. It was found that the period and the amplitude have a direct correlation to the efficiency.
Available from the National Sea Grant Library (use NHU number to search) or NH Sea Grant
- Wave energy (2008). Michael Allard, Colin Fischer, Tania Grindrod, Jessica Murray and Kyle Russ. Advisor: Christopher White.