6-DOF Motion Assessment of A Hydrodynamic Numerical Simulation of A Semisubmersible Platform Using Prototype Monitoring Data  

作　　者：LI Song WU Wen-hua YAO Wei-an 

机构地区：[1]Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology,Dalian 116024,China [2]State Key Laboratory of Structural Analysis of Industrial Equipment,Dalian University of Technology,Dalian 116024,China [3]Research Institute of Dalian University of Technology in Shenzhen Gaoxin South fourth Road,Nanshan District,Shenzhen 518057,China

出　　处：《China Ocean Engineering》2022年第4期575-587,共13页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.U1906233);the Central Guidance on Local Science and Technology Development Fund of Shenzhen(Grant No.2021Szvup021)。

摘　　要：Hydrodynamic numerical simulations are used to conduct structural analyses and inform the design of engineered marine structures.In this paper,a hydrodynamic numerical model of“Nanhai Tiaozhan”(NHTZ)FPS platform was established according to its design specifications.The model was assessed with two sets of field monitoring data representing harsh and conventional sea states.The motion responses of the platform according to the measured data and the hydrodynamic simulation were compared by reviewing their statistical characteristics,distributions,and spectrum characteristics.The comparison showed that the hydrodynamic model could correctly simulate the frequency domain characteristics of the motion responses of the platform.However,the simulation underestimated the reciprocating motions of the floating body and the influence of slow drift on the motion of the platform.Meanwhile,analysis of the monitoring data revealed that the translational degrees of freedom(DOF)and rotational DOF of the platform were coupled,but these coupled motion states were not apparent in the hydrodynamic simulation.

关 键 词：prototype monitoring hydrodynamic numerical simulation statistical characteristics semisubmersible platform reciprocating motions 

分 类 号：U674.38[交通运输工程—船舶及航道工程]