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Numerical Modeling of an Advanced Semi-SWATH Hull in Calm Water and Regular Head Wave

Journal of Marine Science and Application 2021年第4期20卷 646-659页

作者： Arman Zare hassan sayyadi Mohammad Hossein Karimi Department of Mechanical Engineering Sharif Universityof TechnologyTehran 11155-9567Iran Department of Mechanical and AerospaceEngineering Malek-Ashtar University of TechnologyEsfahan 1774-15875Iran

A small waterplane area twin hull(SWATH)has excellent seakeeping performance and low wave-making resistance,and it has been applied to small working craft,pleasure boats,and unmanned surface ***,with the increase in speed,the hydrodynamic resistance of SWATH will increase exponentially because of its large wet surface,followed by the uncomfortable situation of the hull underwater part relative to the water level and in terms of high trim by stern and high sinkage.A way to improve this situation is to reduce the depth of the draft at high speeds to ensure that all or a part of the volume of the submerged bodies is above the water *** on this idea,a new type of semi-SWATH hull form was analyzed in this *** two submerged bodies of the SWATH have a catamaran boat *** paper employed Sie-mens PLM Star-CCM+to study the hydrodynamic performance of an advanced semi-SWATH ***-hull resistance was estimated for both SWATH and CAT(CATAMARAN)modes in calm ***,the efect of fxed stabilizing fns with diferent angles on the vertical motions of the vessel in regular head waves was investigated with an overset mesh *** vertical motion responses were estimated at diferent wave encounter frequencies,and the present numerical method results have been verifed by already published experimental data.

关键词： Seakeeping performance Semi-SWATH Stabilizing fns Vertical motions Overset mesh

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