Hostname: page-component-8448b6f56d-jr42d Total loading time: 0 Render date: 2024-04-18T23:15:58.770Z Has data issue: false hasContentIssue false

A theoretical and experimental study of the capsize of Salter's duck in extreme waves

Published online by Cambridge University Press:  20 April 2006

M. Greenhow
Affiliation:
Division of Marine Hydrodynamics, Norwegian Institute of Technology, Trondheim, Norway
T. Vinje
Affiliation:
Division of Marine Hydrodynamics, Norwegian Institute of Technology, Trondheim, Norway
P. Brevig
Affiliation:
Division of Ship and Ocean Laboratories, Norwegian Hydrodynamic Laboratories, Trondheim, Norway
J. Taylor
Affiliation:
Wave Power Group, Department of Mechanical Engineering, University of Edinburgh, Scotland

Abstract

This paper examines the problem of the survival of Salter's duck wave-energy device in extreme waves, both experimentally in a narrow tank at Edinburgh University and theoretically, using programs originally designed to study nonlinear ship motions (Vinje & Brevig 1981). Both approaches are essentially two-dimensional, corresponding to waves normally incident upon the duck string, and comparison of the two sets of results for a duck on a fixed axis shows good agreement.

Type
Research Article
Copyright
© 1982 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

Brevig, P., Greenhow, M. & Vinje, T. 1981 Extreme wave forces on submerged cylinders. In Proc. B.H.R.A. 2nd Int. Symp. on Wave and Tidal Energy, Cambridge.
Brevig, P., Greenhow, M. & Vinje, T. 1982 Extreme wave forces on submerged wave energy devices. J. Appl. Ocean Res. (to appear).Google Scholar
Cottrill, A. 1981 Wave energy: main U.K. contenders line up for 1982 decision. Offshore Engineer, January 1981.
Edinburgh Wave Power Project 1978a Fourth Year Report, vol. 1.
Edinburgh Wave Power Project 1978b Fourth Year Report, vol. 2.
Greenhow, M. 1980a Scatter diagram tests for duck and joint power and efficiency. Edinburgh Wave Power Project. Internal Rep.Google Scholar
Greenhow, M. 1980b An investigation into the effect of geometrical changes, non-linearities and backbone compliance on the efficiency of Salter's duck in monochromatic and mixed seas: part I. Edinburgh Wave Power Project Internal Rep.Google Scholar
Greenhow, M. 1981 Efficiency calculation for Scatter's duck on a compliant axis. J. Appl. Ocean Res. 3, 145.Google Scholar
Lighthill, J. 1980 Mathematical analysis related to the Vickers project: part I. In Power from Sea Waves: Proc. I.M.A. Conf. Wave Energy, Edinburgh (ed. B. Count), chap. III.5. Academic.
Longuet-Higgins, M. S. 1981 Kinematics of breaking waves. In Proc. Symp. Hydrodynamics in Ocean Engng, Trondheim.
Longuet-Higgins, M. S. & Cokelet, E. D. 1976 The deformation of steep surface waves on water. I. A numerical method of computation. Proc. R. Soc. Lond. A 350, 1.Google Scholar
Mciver, P. & Peregrine, D. H. 1981 Comparison of numerical and analytical results for waves that are starting to break. In Proc. Symp. Hydrodynamics in Ocean Engng, Trondheim.
Mynett, A. E., Serman, D. D. & Mei, C. C. 1979 Characteristics of Salter's cam for extracting energy from ocean waves. J. Appl. Ocean Res. 1, 13.Google Scholar
Salter, S. H. 1978 The development of the duck concept. In Proc. Wave Energy Conf., London-Heathrow, Nov. 1978.
Salter, S. H. 1979 Recent progress on ducks. In Proc. Wave Energy Utilisation Conf., Gothenberg.
Vinje, T. & Brevig, P. 1980a Numerical simulation of breaking waves. In Proc. 3rd Int. Conf. on Finite Elements in Water Resources, Univ. of Miss., Oxford, Miss., May 1980.
Vinje, T. & Brevig, P. 1980b Nonlinear, two-dimensional ship motions. S.I.S. Project, NHL and NTH Rep., Trondheim.
Vinje, T. & Brevig, P. 1981 Nonlinear ship motions. In Proc. 3rd Int. Conf. on Numerical Ship Hydrodynamics, Paris.