DEVELOPMENT OF A PARTIALLY THREE-DIMENSIONAL MODEL FOR SHIP MOTION IN A HARBOR WITH ARBITRARY BATHYMETRY
No. 24 (1994), Conference Proceedings
No. 24 (1994)

DEVELOPMENT OF A PARTIALLY THREE-DIMENSIONAL MODEL FOR SHIP MOTION IN A HARBOR WITH ARBITRARY BATHYMETRY

Conference Proceedings
https://doi.org/10.9753/icce.v24.%25p
Published 1994-01-29
Takumi Ohyama
Centre for Water Research, The University of Western Australia
Mitsuru Tsuchida
Institute of Technology, Shimizu Corporation
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Keywords

3D bathymetry
3D model
ship motion

How to Cite

Ohyama, T., & Tsuchida, M. (1994). DEVELOPMENT OF A PARTIALLY THREE-DIMENSIONAL MODEL FOR SHIP MOTION IN A HARBOR WITH ARBITRARY BATHYMETRY. Coastal Engineering Proceedings, 1(24). https://doi.org/10.9753/icce.v24.%p
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Abstract

A numerical method has been developed for the analysis of ship motions in a harbor with arbitrary bathymetry. A BEM-based 3-D model, applied partially to a near-field surrounding a ship, is combined with a FEM-based 2-D model, utilized in the remainder of harbor domain. This combination may achieve an efficient computation of the ship motions with taking into account of wave deformation in a harbor. Preliminary examinations have been performed to investigate appropriate location of a matching boundary where these two models are coupled. It is found that, for reliable prediction, (2 ~ 3)ft (h: water depth) is required for the distance between the matching boundary and a body. The numerical results of added mass and damping coefficients for a rectangular floating body in a rectangular basin are then compared with those obtained from a conventional numerical model. Favorable agreement between the results verifies the present numerical method. Ship motions in a harbor with slowly varying depth are also demonstrated.
https://doi.org/10.9753/icce.v24.%25p
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