HYDRODYNAMIC INTERACTION FORCES BETWEEN TWO SHIPS IN WAVES

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Authors
  1. He, Y.J.
  2. McTaggart, K.
  3. Hsiung, C.C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Dalhousie Univ, Halifax NS (CAN) Centre for Marine Vessel Design and Research
Abstract
The hydrodynamic interaction forces in waves are computed for two ships advancing in parallel at the same speed. The forces considered are due to added mass, wave radiation damping, and wave excitation including diffraction effects. The coupled hydrodynamic forces are computed by the three-dimensional panel method using the zero speed Green function, with extensions to include forward speed effects. The theoretical formulation correctly satisfies boundary conditions on both ship hulls simultaneously. The wave diffraction problem is solved for the presence of both ships in a stationary state. The wave radiation problem is solved by assuming one ship is in motion while the other is at rest. Examples are given for two stationary vertical circular cylinders and for a small vessel advancing in close proximity to a large supply vessel.
Keywords
Two-ship interaction;Roll damping;Panel methods
Date of publication
01 Jun 1997
Number of Pages
10
DSTKIM No
97-03422
CANDIS No
503453
Format(s):
Hardcopy;Document Image stored on Optical Disk

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