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http://dx.doi.org/10.5394/KINPR.2003.27.5.527

Numerical Prediction of Ship Induced Wave and its Propagation Using Nonlinear Dispersive Wave Model  

Shin, Seung-Ho (Department of Marine environment and Engineering, Port and Airport Research Institute)
Jeong, Dae-Deug (Department of Maritime transportation system, Mokpo Maritime University)
Publication Information
Journal of Navigation and Port Research / v.27, no.5, 2003 , pp. 527-537 More about this Journal
Abstract
The characteristics of ship induced waves caused by navigation become widely different from both ship's speed and water depth condition. The ship induced waves specially generated in coastwise routes frequently give rise to call unforeseen danger for swimmers and small boats as well as shoreline erosion or sea wall destruction in coastal zones. The main concern of ship induced wave study until now is either how to reduce ship resistance or how to manoeuvre the ship safely under a constant water depth in the view point of shipbuilding engineers. Moreover, due to the trends for appearance of the high speed ships at the shallow coastal water, we are confronted with the danger of damages from those ship induced waves. Therefore, it is necessary to examine the development of ship induced waves and the influence of their deformation effects according to its propagation ray. In present study, in order to predict the development of the ship induced waves and their propagation under the conditions of complicate and variable shallow water depth with varying ship's speed, we constructed a computer model using Boussinesq equation with a fixed coordinate system and verified the model results by comparison with experimental results. Additionally, the model was applied under the variable water depth based on actual passage and we then confirmed the importance of the variable water depth consideration.
Keywords
Ship induced wave; Boussinesq equation; Variable water depth; Fixed coordinate system; Slender body ship theory; Wave refraction; Diffraction; Reflection; Shoaling effect;
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