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Ocean Engineering

Quasideterminism Theory of Sea Waves

[+] Author and Article Information
Paolo Boccotti

Okeanos Laboratory, Mediterranean University, Reggio Calabria 89100, Italy

J. Offshore Mech. Arct. Eng 130(4), 041102 (Sep 26, 2008) (9 pages) doi:10.1115/1.2904587 History: Received January 23, 2007; Revised December 14, 2007; Published September 26, 2008

The quasideterminism (QD) theory introduces a deterministic wave function (of both space and time) that shows what, most probably, will happen if an exceptionally large wave will occur at some point in a sea storm. This deterministic wave function holds for every configuration of the solid boundary, provided that the wave motion may be regarded as irrotational. This is the main feature of some conceptual novelties of the QD theory. The following invited lecture given at the 2006 OMAE Congress in Hamburg aims to emphasize these conceptual novelties through a fresh overall picture of the theory.

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Copyright © 2008 by American Society of Mechanical Engineers
Topics: Waves , Seas
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Figures

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Figure 1

Reference scheme for the QD theory

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Figure 2

QD theory: x0,y0 in the open sea

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Figure 3

QD theory: the wave group in the time domain at point x0,y0 if a wave with a given exceptionally large crest-to-trough height H should occur at this point

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Figure 4

QD theory: the wave group in the time domain at point x0,y0 if a wave with a given exceptionally large crest elevation b should occur at this point

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Figure 5

QD theory: x0,y0 at a long vertical breakwater

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Figure 9

Reference scheme for the application of Eqs. 14,14

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Figure 10

(a) QD theory: expected wave forces on a large submerged horizontal cylinder if a wave with a given exceptionally large height should transit above this cylinder. (b) Actual wave forces measured when an exceptionally large wave (about 2.1Hs) transited above the large cylinder.

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Figure 8

QD theory: x0,y0 in the geometric shadow far from a breakwater and close to the shadow line

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Figure 7

QD theory: x0,y0 on the sheltered side of a vertical breakwater

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Figure 6

QD theory: x0,y0 three wavelengths before a long vertical breakwater

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