不规则波浪中船舶垂荡纵摇运动数学模型构建  

Construction of Mathematical Model for Ship’s Heave and Pitch Motions in Irregular Waves

作　　者：杨宗默 马殿光[1] 李晓松[1] 干伟东[1] 王晨阳 YANG Zong-mo;MA Dian-guang;LI Xiao-song;GAN Wei-dong;WANG Chen-yang(Tianjin Research Institute of Water Transport Engineering, Ministry of Transport, Tianjin 300456, China)

机构地区：[1]交通运输部天津水运工程科学研究所,天津300456

出　　处：《船海工程》2021年第S01期52-55,共4页Ship & Ocean Engineering

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(TKS170216);贵州省科技重大专项(黔科合重大专项字[2018]3010);科研创新基金(基本科研业务费)项目(TKS180402);贵州省交通运输厅科技项目2018-241-006。

摘　　要：为提高航海模拟器在港航工程项目实践等应用中的仿真度,研究不规则波浪中船舶运动建模方法。在二维理论范畴内,采用多极展开法对船舶横剖面水动力系数及波浪扰动力进行计算,建立规则波浪中船舶垂荡纵摇运动响应方程。长峰不规则波浪模型采用P-M波谱进行表示,并构建了不规则波浪中船舶垂荡纵摇运动数学模型。采用Mariner船验证所建船舶运动数学模型,计算结果表明:文中方法比普通切片法更接近试验值;在不同海况下,船舶运动时间历程是稳定收敛的,验证了船舶运动数学模型的可靠性与适用性。In order to improve the simulation degree of navigation simulator in port and waterway engineering projects,the modeling method of ship motion in irregular waves was studied.By using the potential flow theory,the multi-pole expansion method was used to calculate the transverse hydrodynamic coefficient and wave disturbance force,and the response equation of ship's heave and pitching motion in regular waves was established.The long peak irregular wave model was represented by P-M spectrum.The Mariner ship was used to verify the mathematical model.It was shown that the results of the proposed method is closer to the experimental value than that of the ordinary strip method;the time history of ship motion is stable and convergent under different sea conditions,verifiing the reliability and applicability of the mathematical model of ship motion.

关 键 词：港航工程 航海模拟器 数学模型 垂荡 纵摇 保角变换法 

分 类 号：U675.79[交通运输工程—船舶及航道工程]