Hydrodynamic Investigation of A Multi-Module Floating Platform with A Wave Energy Device Array  

作　　者：ZHAO Xuan-lie WANG Jia GENG Jing ZHOU Su-lian C.Guedes Soares 

机构地区：[1]College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China [2]State Key Laboratory of Hydropower Equipment,Harbin Engineering University,Harbin 150001,China [3]International Joint Laboratory of Naval Architecture and Offshore Technology between Harbin Engineering University and University of Lisbon,Harbin 150001,China [4]Centre for Marine Technology and Ocean Engineering(CENTEC),Instituto Superior Técnico,Universidade de Lisboa,Lisbon 1049-001,Portugal

出　　处：《China Ocean Engineering》2024年第6期1034-1046,共13页中国海洋工程(英文版)

基　　金：supported by the National Key Research and Development Project of China(Grant No.2023YFC3106904);National Natural Science Foundation of China(Grant No.52001086);the Fundamental Research Funds for the Central Universities,China(Grant No.3072023JC0101);Additionally,this work contributes to the Strategic Research Plan of the Centre for Marine Technology and Ocean Engineering(CENTEC),which is financed by the Portuguese Foundation for Science and Technology(Fundação para a Ciência e Tecnologia-FCT)under contract UIDB/UIDP/00134/2020.

摘　　要：This paper presents a hydrodynamic analysis of a hybrid system consisting of a floating platform coupled with an array of oscillating bodies that move along the weather sidewall of the platform.Using the Lagrange multiplier method,the motion equation governing this type of motion characteristic is formulated,and the formula of the extracted wave power is derived.The numerical results demonstrate a significant increase in the hydrodynamic efficiency of oscillating bodies within specific frequency ranges in the presence of the floating platform.The incorporation of proper power take-off damping of the oscillating bodies results in a reduction in the heave motion of the platform,but it may lead to an increase in pitch motion.The analysis of the response behaviour of the system shows that both the heave motion and pitch motion of the platform contribute to the power extraction and relative motion between the buoys and the platform.Parametric investigations are conducted to explore the hydrodynamic interactions between the floating platform and the buoy array.Additionally,the concept of“hydrodynamic synergy”is proposed to describe the synergetic effect of different components of a multi-purpose platform,which is of considerable engineering interest.

关 键 词：hybrid floating system wave energy device array hydrodynamic interactions multi-body system Lagrange multiplier method 

分 类 号：O35[理学—流体力学]