漂浮摆—斜坡组合式波浪能发电装置研究

Research on the Floating Pendulum-Slope Combined Type of Wave Energy Power Generation Device

目前全球对能源的需求急速增长,其中对可再生能源的需求也越来越大。中国将成为全球能源消费第一大国,研发高效的可再生能源装备已刻不容缓。我国有大量可开发的海洋波浪能,其中舟山附近海域的波浪能相当丰富。文中研发了适合舟山海域波浪条件的波浪能发电装置。具体研究内容包括以下几个方面:(1)从流体力学理论出发,采用斜坡将水平速度转化为垂向速度,设计了近岸固定式可适应潮位变化的波浪能发电装置。(2)进行了多种结构漂浮摆-斜坡组合的模型试验,找到了最佳结构方案,验证了漂浮摆原理的可行性。利用提升重物的方法获得了模型装置的一级波浪能捕获效率,成功通过液压装置将波浪能转化为电能。(3)建立了基于非稳态RANS的CFD仿真模型,分析漂浮摆式波浪能捕获模块的水动力性能。研究在不同载荷情况下漂浮摆装置的能量输出情况,得到了装置在特定工况下的漂浮摆受力情况,为能量转化系统设计和装置设计制造提供参考。

Currently,with the fast increase of global energy requirement,the industry is increasingly focusing on renewable energies.As the largest energy consumer in the world in the near future,it is urgent for China to develop efficient renewable energy utilization equipment.China boasts abundant exploitable wave energy,especially in the sea area off the coast of Zhoushan Islands.A kind of wave energy power generation device has been developed suited to the wave conditions of the Zhoushan area.The research involves the following aspects：（1） Based on hydrodynamic theories,slope is adopted to convert horizontal speed into vertical speed.so as to design a wave energy converter fixed nearshore and adapted to the variation of tidal levels.（2） Experiments on the floating pendulum-slope combined model with multiple structures are conducted to find out the optimal scheme for structural designing,and the feasibility of the floating pendulum principle is validated.The method of raising heavy objects is used to obtain the first-level wave energy capture efficiency of the model,successfully converting wave power into electricity through hydraulic pressure devices.（3） This paper establishes the CFD simulation model based on non-stable RANS,and analyzes the hydrodynamic properties of the wave energy capture mode.The energy output of the floating pendulum is studied under different loads in order to obtain the force analysis of the pendulum under certain load conditions,which provides a reference for the design and manufacturing of the wave energy converting system.