07 November 2008

[4S/yim260] Ship Bow Waves, Delhommeau

An analytical and experimental study of the bow wave generated by a ship in steady motion is reported. Simple analytical expressions are given for the height of water at the stem, the height of the bow wave, the distance between the crest of the bow wave and the ship stem, and the shape of the bow wave. Furthermore, a simple criterion that defines if a ship in steady motion generates an unsteady bow wave is given. Finally, a simple, fully-analytical, nonlinear theory that explicitly defines an overturning ship bow wave in terms of main design parameters is given. In spite of their remarkable simplicity, these analytical results are in reasonable agreement with experimental observations and measurements for a number of non bulbous hull forms with wedge-shaped bows, and for a rectangular flat plate towed at a yaw angle and a heel angle.

# Author :
Delhommeau Gerard, LMF-UMR 6598 CNRS, Ecole Centrale de Nantes, France
Noblesse Francis, David Taylor Model Basin, NSWC-CD, West Bethesda, USA
Guilbaud Michel, LEA-UMR 6609 CNRS, Université de Poitiers, France

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