Extracting energy while reducing hydroelastic responses of VLFS using a modular raft wec-type attachment |
| |
| Institution: | 1. School of Civil Engineering, The University of Queensland, St Lucia, Queensland, 4072, Australia;2. Water Research Laboratory, School of Civil & Environmental Engineering, UNSW, Sydney, NSW, 2052, Australia;1. State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai, 200240, China;3. Department of Naval Architecture and Marine Engineering, University of Strathclyde, Glasgow, G11XQ, United Kingdom;1. China Ship Scientific Research Center, Wuxi, China;2. State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiaotong University, Shanghai, China;1. School of Naval Architecture and Marine Engineering, National Technical University of Athens, Iroon Polytechniou St. 9, Zografou Campus, 15773 Athens, Greece;2. Department of Mechanics, School of Applied Mathematical and Physical Science, National Technical University of Athens, Iroon Polytechniou St. 9, Zografou Campus, 15773 Athens, Greece;1. School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;2. Deepwater Engineering Research Center, Dalian University of Technology, Dalian 116024, China;3. Centre for Ships and Ocean Structures, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;1. China Ship Scientific Research Center, No.222 East Shanshui Road, Binhu District, Wuxi, 214082, China;2. National Laboratory of Naval Architecture & Ocean Engineering, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 20024, China |
| |
| Abstract: | This paper presents the use of a modular raft Wave Energy Converter (WEC)-type attachment at the fore edge of a rectangular Very Large Floating Structure (VLFS) for extracting wave energy while reducing hydroelastic responses of the VLFS under wave action. The proposed modular attachment comprises multiple independent auxiliary pontoons (i.e. modules) that are connected to the fore edge of the VLFS with hinges and linear Power Take-Off (PTO) systems. For the hydroelastic analysis, the auxiliary pontoons and the VLFS are modelled by using the Mindlin plate theory while the linear wave theory is used for modelling the fluid motion. The analysis is performed in the frequency domain using the hybrid Finite Element-Boundary Element (FE-BE) method. Parametric studies are carried out to investigate the effects of pontoon length, PTO damping coefficient, gap between auxiliary pontoons, and incident wave angle on the power capture factor as well as reductions in the hydroelastic responses of the VLFS with the modular attachment. It is found that in oblique waves, the modular attachment comprising multiple narrow pontoons outperforms the corresponding rigid attachment that consists of a single wide pontoon with respect to the power capture factor and the reduction in the deflection of the VLFS. In addition, it is possible to have a considerable gap between pontoons without significantly compromising the effectiveness of the modular attachment. |
| |
| Keywords: | Very large floating structure (VLFS) Hydroelastic responses Auxiliary attachment Wave energy converter (WEC) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
