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

静水和规则波顶浪中航行的半小水线面双体船的数值建模研究

作　　者：Arman Zare Hassan Sayyadi Mohammad Hossein Karimi 

机构地区：[1]Department of Mechanical Engineering,Sharif Universityof Technology,Tehran 11155-9567,Iran [2]Department of Mechanical and AerospaceEngineering,Malek-Ashtar University of Technology,Esfahan 1774-15875,Iran

出　　处：《Journal of Marine Science and Application》2021年第4期646-659,共14页船舶与海洋工程学报（英文版）

摘　　要：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 vehicles.However,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 level.Based on this idea,a new type of semi-SWATH hull form was analyzed in this paper.The two submerged bodies of the SWATH have a catamaran boat shape.This paper employed Sie-mens PLM Star-CCM+to study the hydrodynamic performance of an advanced semi-SWATH model.Bare-hull resistance was estimated for both SWATH and CAT(CATAMARAN)modes in calm water.Moreover,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 approach.The 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 

分 类 号：U674.951[交通运输工程—船舶及航道工程]