筏式波浪能发电装置浮体水动力相互作用与能量俘获研究  

Study on the Hydrodynamic Interaction and Energy Capture for Raft Wave Energy Converter

作　　者：唐友刚[1,2] 赵青[1,2] 黄印[1,2] 何鑫[1,2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《海洋技术学报》2016年第4期87-92,共6页Journal of Ocean Technology

基　　金：国家自然科学基金资助项目(51279130;51479134)

摘　　要：基于三维势流理论,建立筏式波浪发电装置多浮体水动力模型。利用AQWA水动力软件研究多浮体水动力相互作用对发电装置浮体单元水动力系数的影响;将能量转换系统等效成刚度-阻尼模型后,对其进行不规则波时域模拟,对比分析方向谱和频率谱波浪模型对波浪发电装置能量吸收的影响。结果表明:浮体之间的水动力相互作用对浮体单元纵荡方向上的附加质量与辐射阻尼系数有明显的影响,对垂荡和纵摇方向上的水动力系数影响较小;不同的波浪模型下,能量俘获功率有着较大的差别,特别是在迎浪状态下。Based on three-dimensional potential flow theory, this paper builds a multi-body hydrodynamic model of raft floating wave energy converter. The AQWA software is used for studying the effect of multi-body hydrodynamic interaction on the hydrodynamic coefficient of the float element. After the energy conversion system is equivalent to the stiffness- damping model, the domain simulation is carried out. Then this paper compares the effects of irregular wave directional spectrum and the frequency spectrum on energy absorption. The results show that the hydrodynamic interactions between floating bodies have significant effect on the additional mass and radiation damping in surge, and the effect is smaller in heave and pitch. Different wave models result in obvious difference in the energy capture efficiency, especially the device is heading the wave.

关 键 词：筏式波浪能发电装置 水动力相互作用 频率谱 方向谱 

分 类 号：P743.2[天文地球—海洋科学]