Abstract
Following the experimental testing of a two-dimensional LiftWEC concept and analysis of the results, the final concept is due to be tested in the Hydraulic and Offshore Engineering wave tank (HOET) in Ecole Centrale de Nantes (ECN). This document provides specifications of the physical model, that were derived through discussions with the partners involved in the numerical modelling work package, through considerations of the prototype characteristics, testing facilities and ECN physical model design and testing know how. The model allows testing of configurations with one or two foils and with adjustments of the foil angle of attack, between tests. The model is to be tested in the HOET under a hexapod capable of six degree actuation. The idea behind this approach is to use the hexapod to test a fixed model with variable depth and orientation and to test a model moving in a controlled motion cycle to simulate a floating model. The motion of the rotor is controlled using a power takeoff (PTO) system consisting of an electrical machine which can be operated in position, speed and torque control. The quantities measured are: the PTO torque, radial and tangential loads on the axis of each foil, absolute angular position of the rotor and wave elevation upstream and downstream of the model. From those measured quantities, rotor velocity and acceleration as well as captured power can be inferred. The details of the various components as well as technical drawings of the parts of the model are provided herein.