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Hydrodynamic Interactions for Small Arrays of Wave Energy Devices

[+] Author Affiliations
P. A. P. Justino

Instituto Nacional de Engenharia e Tecnologia Industrial, Lisboa, Portugal

A. F. de O. Falcão

Instituto Superior Técnico, Lisboa, Portugal

Paper No. OMAE2002-28288, pp. 827-834; 8 pages
doi:10.1115/OMAE2002-28288
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 2
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3612-6 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

The main object of this work is to develop accurate solutions for hydrodynamics coefficients of arrays of simple-geometry wave-energy devices. Use is made of a computationally very efficient method, to model the wave energy absorption by a rigid sphere moving in heave and sway in water of constant (finite) depth, that employs a series of pulsating multipoles located at the centre of the sphere; a monopole or source can be added to simulate the effect of pulsating volume. In the present work, this is extended to model the interaction between spheres in a finite array, by locating series of multipoles at the centre of each sphere and computing the multipoles intensities from the boundary conditions at the spheres’ surfaces in order to find the matrices of damping and added-mass coefficients in several oscillating modes. Numerical results are obtained for small arrays. This may be used to validate results from boundary-element methods.

Copyright © 2002 by ASME
Topics: Wave energy

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