Wave Energy Converter Study

Loads and Motions of a Near-Shore Structure

Designs for a wave energy device have been constructed to a scale of 1/25 th in order to investigate the hydrodynamic loads and motions on the structure and mooring systems. This work has been conducted for Energetech Australia Pty Ltd who are developing a unique near-shore system for converting ocean wave energy into usable electricity. To date, three phases of tests have been conducted within the AMC Model Test Basin by AMC staff specialising in experimental hydrodynamics. The models are geometrically and kinematically similar to the 300kW prototype demonstration wave energy plant installed off the south breakwater at Port Kembla, New South Wales early in 2005. Two photos from the model experiments are shown here.

Tests were conducted over a wide range of both operational and extreme storm conditions. Wave heights were varied from 1m up to 6m, and wave periods ranged from 6s to 12s. The structure was tested at three different headings (0, 22.5 and 45 degrees). Continuous measurements of mooring line forces, structure motions and loads, chamber and turbine pressures and wave elevations.

Acknowledgement is given to Energetech Australia for their permission to publish the above details.

Wave Energy Converter Study