0
REVIEW ARTICLES

Nonlinear Components of Ship Wake Waves

[+] Author and Article Information
Tarmo Soomere

Centre for Nonlinear Studies,  Institute of Cybernetics at Tallinn University of Technology, Akadeemia tee 21, 12618 Tallinn, Estoniasoomere@cs.ioc.ee

Appl. Mech. Rev 60(3), 120-138 (May 01, 2007) (19 pages) doi:10.1115/1.2730847 History:

Nonlinear components of wakes from large high-speed ships at times carry a substantial part of the wake energy and behave completely differently compared to the classical Kelvin wave system. This overview makes an attempt to summarize the descriptions of nonlinear parts of a ship’s wake. For completeness, also the basic properties of the Kelvin wake are sketched. The central topic is the generation of solitons by ship motion both in channels and in unbounded sea areas. The discussion is mostly limited to disturbances on the surface of nonstratified water. The optional nonlinear components of the ship wake such as the very narrow V-like wake components, packets of monochromatic waves, ship-generated depression areas, and supercritical bores are also discussed. Specific features of solitonic ship waves and their interactions have numerous applications in naval and coastal engineering, and in adjacent areas of applied mechanics. An overview of the practical use of certain properties of phase shifts, and particularly high wave humps occurring during Mach reflection and nonlinear interaction of solitons in decreasing the wave resistance at supercritical speeds and in the freak wave theory, is also presented. The final part of the paper describes the results of studies of far-field properties of nonlinear wakes and possible consequences of the increase of local hydrodynamic activity. There are 263 references cited in this review article.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Topics: Waves , Wakes , Ships , Solitons
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Pattern of wave crests generated by a point pressure disturbance moving over deep water: (1) diverging waves; (2) transversal waves

Grahic Jump Location
Figure 2

Scheme of the Kelvin wedge for water waves. The supercritical wedge is plotted for Fh=3.

Grahic Jump Location
Figure 3

Dependence of the half-angle of the Kelvin wedge on the Froude number

Grahic Jump Location
Figure 4

Sketch of linear and nonlinear elements of ship wakes

Grahic Jump Location
Figure 5

Idealized patterns of crests of incoming solitons (bold lines), their position in the absence of interaction (dashed lines), and the interaction soliton (bold dashed line) corresponding to the negative phase shift case

Grahic Jump Location
Figure 6

Pressure fluctuations caused by the wake of a large high-speed ship near the western coast of Aegna (Gulf of Finland, the Baltic Sea). The first wave group has the maximum height of 45cm, the second group of 25cm. The highest is the third group (52cm). The significant height of the natural wave background is about 30cm(60).

Grahic Jump Location
Figure 7

Comparison of the average energy and power of ship wakes and wind waves in annual mean and during summer seasons for five measurement sites at the coasts of Tallinn Bay

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In