甲板上浪对船舶横摇复原力臂的影响分析  

Analysis of Influence of Green Water on Roll Restoring Arm of Ships

作　　者：石彦文 卜淑霞[1,2] 张培杰 顾民 SHI Yanwen;BU Shuxia;ZHANG Peijie;GU Min(China Ship Scientific Research Center,Wuxi 214082,China;National Key Laboratory of Hydrodynamics,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,无锡214082 [2]水动力学国家重点实验室,无锡214082

出　　处：《中国造船》2023年第6期35-48,共14页Shipbuilding of China

基　　金：国家自然科学基金资助项目(52001285,52271336)。

摘　　要：船舶在波浪中横摇复原力臂的变化是其参数横摇和纯稳性丧失等稳性失效模式发生的关键因素,在MSC第二代完整稳性衡准中已明确指出当前的衡准方法不适用于那些受甲板积水影响显著的船型。论文重点开展甲板上浪对船舶横摇复原力臂的影响分析。以“育鹏”轮为对象,开展不同波浪条件下的约束模试验,试验时固定横倾角,仅释放垂荡和纵摇运动。基于光滑粒子流体动力学开展了数值模拟,将最大波陡增加至0.09,研究甲板积水对横摇力臂的影响。模型试验和数值模拟结果表明:横摇复原力臂幅值随波陡的增加而增加,在研究的参数范围内,较小的波陡(0.01~0.03)下波长-船长比对复原力的影响较小,当波陡增大至0.03后,波长-船长比对复原力的影响逐渐显著,但两者非单调变化关系;甲板上浪过程中的冲击和流动会显著增大横摇回复力臂幅值,且上浪积水会显著影响横摇回复力臂的均值。Variation of the roll restoring arm of a ship is a key factor in its stability mode such as parametric rolling and pure loss of stability.It is advised in the second-generation intact ship stability criteria that the recommended calculation methods are not applicable for ships sensitive to the green water.This study focuses on analyzing the influence of green water on the roll restoring moment of ships.Taking the"Yu Peng"as the object,constrained model tests were carried out under various wave conditions.In the tests,the roll angle was fixed and only sway and pitch motions were released.Numerical simulations based on smoothed particle hydrodynamics were carried out,with the maximum wave steepness increased to 0.09,to study the influence of deck waterlogging on the roll restoring moment.Results from the model tests and numerical simulations show that the roll restoring moment increases with increasing wave steepness.At small wave steepness,the wave length-ship length ratio has little influence on the roll restoring moment,while at large wave steepness,the relationship between them becomes non-monotonic.The impact and flow during the green water process can significantly increase the amplitude of the roll restoring moment,and the water on the deck significantly affects the mean value of the roll restoring moment.

关 键 词：甲板上浪 横摇复原力臂 光滑粒子流体动力学 约束模试验 

分 类 号：U661.2[交通运输工程—船舶及航道工程]