A Lagrangian Model for Irregular Waves and Wave Kinematics-Reference-Cited by-同舟云学术

A Lagrangian Model for Irregular Waves and Wave Kinematics

Published:2003-04-16 Issue:2 Volume:125 Page:94-102
ISSN:0892-7219
Container-title:Journal of Offshore Mechanics and Arctic Engineering
language:en
Short-container-title:

Author:

Gjøsund Svein Helge¹

Affiliation:

1. SINTEF Fisheries and Aquaculture, NO-7465 Trondheim, Norway

Abstract

It has proven difficult to describe the kinematics in irregular waves satisfactorily, in particular for the surface zone in broad-banded waves. A Lagrangian approach offers distinct advantages in this respect, eliminating the need for extrapolation of solutions or “stretching” of coordinates. This paper presents a model of irregular waves based on superposition of linear Lagrangian wave components, using an iterative method to obtain the Eulerian solution. This approach yields theoretically consistent results everywhere in the waves, and comparisons with wave flume measurements show good agreement. Also, the linear Lagrangian model includes wave interactions that would be nonlinear in an Eulerian formulation.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Link

http://asmedigitalcollection.asme.org/offshoremechanics/article-pdf/125/2/94/5541074/94_1.pdf

Reference23 articles.

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3. Gjøsund, S. H., 2000, “Kinematics in Regular and Irregular Waves Based on a Lagrangian Formulation,” doctoral thesis, Dept. of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

4. Gerstner, F. J. v., 1802, ‘Theorie der Wellen,’ Abh. d. k. bohm. Ges. d. Wiss.

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