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Numerical Simulation of the Slamming Phenomenon of a Wave-piercing Trimaran in the Presence of Irregular Waves Under Various Seagoing Modes by Parviz Ghadimi; Amin Nazemian; Mohammad Sheikholeslami is a Engineering article available to read on EtoBox.

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Trimaran vessels have been of great interest to naval architects, due to their large deck space, low resistance at high speeds and stability. Meanwhile, determination of their slamming forces in the presence of highly nonlinear waves has always been a challenge for the structural designers. However, because of novelty and complexity of their hulls, there is insufficient information in this regard, which necessitates suitable effort in filling this gap. Accordingly, in this article, using Flow-3D, a commercial computational fluid dynamics code, seakeeping of a wave-piercing trimaran is simulated in the presence of irregular waves via standard Bretschneider spectrum in sea state 5 in various seagoing modes. These modes include two speeds and two waves with encountering angles of head sea and bow quartering sea. For validation purposes, seakeeping of a trimaran vessel and water entry of a wedge-shaped section are investigated and numerical results are compared against experimental and analytical data. Good compliance of the results confirms the accuracy of the proposed numerical model. In the slamming analysis of the considered trimaran, using the relative vertical velocity of the bow

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Author

Parviz Ghadimi; Amin Nazemian; Mohammad Sheikholeslami

Publisher

SAGE Publications

Published

2019

Language

EN

Field

Engineering (Physical Sciences)