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Fundamentals concerning wave loading on offshore structures

Published online by Cambridge University Press:  21 April 2006

James Lighthill
James Lighthill
Affiliation:
University College, Gower Street, London, WC1E 6BT, UK
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Abstract

This article is aimed at relating a certain substantial body of established material concerning wave loading on offshore structures to fundamental principles of mechanics of solids and of fluids and to important results by G. I. Taylor (1928a, b). The object is to make some key parts within a rather specialised field accessible to the general fluid-mechanics reader.

The article is concerned primarily to develop the ideas which validate a separation of hydrodynamic loadings into vortex-flow forces and potential-flow forces; and to clarify, as Taylor (1928b) first did, the major role played by components of the potential-flow forces which are of the second order in the amplitude of ambient velocity fluctuations. Recent methods for calculating these forces have proved increasingly important for modes of motion of structures (such as tension-leg platforms) of very low natural frequency.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 173 , December 1986 , pp. 667 - 681
Copyright
© 1986 Cambridge University Press

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References

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