Hostname: page-component-8448b6f56d-sxzjt Total loading time: 0 Render date: 2024-04-23T11:57:54.230Z Has data issue: false hasContentIssue false
  • English
  • Français

A theory for wave-power absorption by oscillating bodies

Published online by Cambridge University Press:  11 April 2006

D. V. Evans
D. V. Evans
Affiliation:
Department of Mathematics, University of Bristol, England
Get access Rights & Permissions [Opens in a new window]

Abstract

A theory is given for predicting the absorption of the power in an incident sinusoidal wave train by means of a damped, oscillating, partly or completely submerged body. General expressions for the efficiency of wave absorption when the body oscillates in one or, in some cases, two modes are given. It is shown that 100% efficiency is possible in some cases. Curves describing the variation of efficiency and amplitude of the body with wavenumber for various bodies are presented.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 77 , Issue 1 , 9 September 1976 , pp. 1 - 25
Copyright
© 1976 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Budal, K. & Falnes, J. 1975 A resonant point absorber of ocean-wave power. Nature, 256, 478–479.Google Scholar
Frank, W. 1967 Oscillation of cylinders on or below the free surface of deep fluids. N.S.R.D.C. Rep. no. 2375.Google Scholar
Haskind, M. D. 1957 The exciting forces and wetting of ships in waves. Izv. Akad. Nauk SSSR, Otd. Tekh. Nauk, 7, 65–79. (English trans. David Taylor Model Basin Tram. no. 307.)Google Scholar
Havelock, T. H. 1955 Waves due to a floating sphere making periodic heaving oscillations. Proc. Roy. Soc. A 231, 1–7.Google Scholar
Ktik, J. 1963 Damping and inertia coefficients for a rolling or swaying vertical strip. J. Ship Res. 7, 19–23.Google Scholar
Kotik, J. & Manculis, V. 1962 On the Kramers-Kronig relations for ship motions. Int. Shipbldg Prog. 9, 3–10.Google Scholar
Newman, J. N. 1962 The exciting forces on fixed bodies in waves. J. Ship Reg. 6, 10–17.Google Scholar
Newman, J. N. 1975 Interaction of waves with two-dimensional obstacles: a relation between the radiation and scattering problems. J. Fluid Mech. 71 273–282.Google Scholar
Ogilvie, T. F. 1963 First-and second-order forces on a cylinder submerged under a free surface. J. Pluid Mech. 16, 451–472.Google Scholar
Salter, S. H. 1974 Wave power. Nature, 249, 720–724.Google Scholar
Ursell, F. 1948 On the waves due to the rolling of a ship. Quart. J. Mech. Appl. Math. 1, 246–252.Google Scholar