Experimental Study on the Configuration Hydrodynamics of Trimaran Ships  

三体船构型水动力性能试验研究

作　　者：Jingbei Jia Zhi Zong 贾敬蓓;宗智(School of Navigation and Naval Architecture,Dalian Ocean University,Dalian 16023,China;School of Naval Architecture Engineering,Dalian University of Technology,Dalian 116024,China;State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian 116024,China)

机构地区：[1]School of Navigation and Naval Architecture,Dalian Ocean University,Dalian 16023,China [2]School of Naval Architecture Engineering,Dalian University of Technology,Dalian 116024,China [3]State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian 116024,China

出　　处：《Journal of Marine Science and Application》2022年第3期46-55,共10页船舶与海洋工程学报（英文版）

基　　金：Supported by the Natural Science Foundation of China under Grant Nos.52171294 and 52192692。

摘　　要：This paper presents experimental results on configuration hydrodynamics.Three models are used in the model tests,which are typical of hard,round,and soft chines.Although specific values are different,the influence patterns are similar in the three ship models.A set of different outrigger positions is investigated in calm water and regular waves.A variety of interesting phenomena are observed,among which the splash resistance is the dominant component for a trimaran at high speeds(with Froude number Fr>0.6).If two small outriggers are placed inside Kelvin’s wave systems of the main hull,a strong splash appears,resulting in a significant resistance increase.Moreover,short and long waves cannot be neglected,for they may excite the motions of much smaller outriggers.This condition leads to non-vanishing heaving at high-frequency and non-normalized pitches at low frequencies.Based on the tests,three spectra of optimum configurations for resistance,longitudinal motions,and transverse motions are presented.These results reveal the optimum configurations of a trimaran hull in terms of hydrodynamic performance,thus providing a very powerful tool for optimum design of trimaran ships.

关 键 词：Trimaran ship CONFIGURATION HYDRODYNAMICS Splash resistance Spectra of optimum configurations 

分 类 号：U674.951[交通运输工程—船舶及航道工程]