Modelling and design of a perfectly-absorbing wave energy converter

This paper concerns the absorption of energy from two-dimensional water waves propagating over fluid constant depth by a wave converter consisting small buoyant floating rafts constrained to move in heave motion and attached bed with springs dampers. Under shallow approximation motion, it is shown that spatially-varying spring damper settings allow all be absorbed frequencies. The basis design formulation novel type ‘Perfectly Matched Layer’ equation which can mapped onto model converter. theoretical predictions are tested computations based on full description linearised show near-perfect persists wide range