系泊船舶在波浪作用下撞击力的数值模拟研究  

Numerical simulation of impact force for a moored ship under wave action

作　　者：沈文君 谭凤[2] 张维 高峰[1] 聂晓彤 SHEN Wen-jun;TAN Feng;ZHANG Wei;GAO Feng;NIE Xiao-tong(Tianjin Research Institute for Water Transport Engineering, Key Laboratory of Engineering Sediment, Ministry of Transport, Tianjin 300456, China;CCCC Water Transportation Consultants Co. Ltd., Beijing 100007, China)

机构地区：[1]交通运输部天津水运工程科学研究所工程泥沙交通行业重点实验室,天津300456 [2]中交水运规划设计院有限公司,北京100007

出　　处：《水道港口》2021年第5期636-640,共5页Journal of Waterway and Harbor

基　　金：国家自然科学基金(52001149,52039005);温州鹿城区科技研究开发专项(G21011);中央级公益性科研院所科研创新基金(TKS20210108,TKS20200304)。

摘　　要：基于三维势流理论计算的频域水动力结果,通过延迟函数矩阵,建立了船舶、缆绳与护舷结构组成的时域分析运动方程。通过数值模拟,得到了不同浪向作用下各个护舷的受力特点和规律。计算结果表明:港区的浪向为斜浪时,码头上各个护舷的受力差别较大,迎浪侧护舷受力最大,中间的护舷受力最小。随着浪向的增大,各个护舷的撞击力都有所增大,由于船舶运动的增大,艏艉附近护舷受到的撞击力明显增大。在统计码头所受撞击力总力时,按照时间同步分析各个护舷受力更为合理,研究结果可为码头设计及护舷选型提供理论参考和依据。Based on the hydrodynamic results of three dimensional potential flow in frequency domain and the delay function matrix,the time domain analysis equations of motion of ship,mooring lines and fender structures were established.Through numerical simulation,the force characteristics and regularity of each fender under different wave directions were obtained.The results show that when the wave direction is oblique wave,the impact force difference of each fender on the wharf is large,and the impact force of the fender on the upstream side is the largest,and the impact force of the fender in the middle is the smallest.With the increase of wave direction,the impact force of each fender increases.Because of the increase of ship motion,the impact force of fender near the bow and stern increases obviously.It is more reasonable to analyze the forces on each fender according to the time synchronization when calculating the total impact force on the wharf.The research results can provide theoretical reference and basis for the design of the wharf and the selection of fender.

关 键 词：势流理论 时域分析 数值模拟 斜浪 护舷撞击力 

分 类 号：U661.39[交通运输工程—船舶及航道工程]