Professional paper

https://doi.org/10.21278/brod70209

A LID APPROACH FOR PREDICTING WAVE INDUCED MOTIONS OF TRIMARAN IN REGULAR WAVES

Zongyu Jiang orcid.org/0000-0002-3981-2925 ; Wood Group, Shanghai 201206, China
Yun Gao ; State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China, Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
Jie Liu ; MathWorks, Shanghai 200122, China

Abstract

The wave induced motions of a trimaran sailing in regular head waves were predicted by using the three dimensional boundary integral method. Large wave elevation on the free surface in between the trimaran’s main-hull and the outriggers occurred at some specific frequencies in the numerical model. The large wave elevation also induced large heave and pitch motions of trimaran. However, the large wave elevation and corresponding large motions were not observed during towing tank tests. A lid approach was introduced in this paper by placing lid on the free surface in between hulls to suppress the unrealistically large wave elevation and to correctly predict the induced motions of trimaran. The feasibility and practicability of lid approach were validated against experimental results.

Keywords

Trimaran; lid approach; ship motions; wave elevation; regular waves

Hrčak ID:

220207

URI

https://hrcak.srce.hr/220207

Publication date:

30.6.2019.

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