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Energy Take-Out from a Wave Energy Device. A Theoretical Study of theHydrodynamics of a Two-Body Problem Consisting of a Buoy and a Submerged Plate

机译:波能装置的能量输出。浮标和淹没板两体问题的水动力学理论研究

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A method for calculating the energy take-out from a single wave energy converteris presented. The converter consists of a buoy connected via a hose pump to a submerged plate. The equations of motion of the buoy and plate are solved linearly in the frequency domain, which shows that frequency dependent hydrodynamic properties can be used. The emphasis in the report is placed on the calculation of the frequency dependent hydrodynamic properties, such as the wave excited forces and the hydrodynamic coefficients. The structure is considered to be large in comparison with the wave length and, therefore, the diffraction theory has been used. A method of calculating the forces that act on the bodies is presented, as well as the interaction between the bodies. The two-body problem is solved analytically. The present solution is compared with a numerical one and an analytical one, the latter, however, treats simply a single buoy riding in the waves. The calculated energy take-out of the present model is compared with a time domain dependent model, and reasonable agreement has been found.

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